SH - Southern Hemisphere https://climatedataguide.ucar.edu/ en Southern Hemisphere westerly jet strength and position https://climatedataguide.ucar.edu/climate-data/southern-hemisphere-westerly-jet-strength-and-position <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--title.html.twig * field--node--title--rss.html.twig * field--node--climate-dataset--title.html.twig * field--node--title--climate-dataset.html.twig x field--node--title.html.twig * field--node--climate-dataset.html.twig * field--title.html.twig * field--string.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <span class="field field--name-title field--type-string field--label-hidden">Southern Hemisphere westerly jet strength and position</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--uid.html.twig * field--node--uid--rss.html.twig * field--node--climate-dataset--uid.html.twig * field--node--uid--climate-dataset.html.twig x field--node--uid.html.twig * field--node--climate-dataset.html.twig * field--uid.html.twig * field--entity-reference.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--uid.html.twig' --> <span class="field field--name-uid field--type-entity-reference field--label-hidden"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'username' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/user/username.html.twig' --> <span lang="" about="/user/2" typeof="schema:Person" property="schema:name" datatype="">ryanj</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/user/username.html.twig' --> </span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--uid.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--created.html.twig * field--node--created--rss.html.twig * field--node--climate-dataset--created.html.twig * field--node--created--climate-dataset.html.twig x field--node--created.html.twig * field--node--climate-dataset.html.twig * field--created.html.twig * field--created.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--created.html.twig' --> <span class="field field--name-created field--type-created field--label-hidden">Fri, 12/29/2017 - 11:28</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--created.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'layout__twocol_section' --> <!-- FILE NAME SUGGESTIONS: x layout--twocol-section.html.twig x layout--twocol-section.html.twig * layout.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/layout/layout--twocol-section.html.twig' --> <div> <div class="layout__region layout__region--main-top breadcrumb-wrapper mt-2"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--system-breadcrumb-block.html.twig * block--system.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-system block-system-breadcrumb-block"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'breadcrumb' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/navigation/breadcrumb.html.twig' --> <nav class="mb-2 d-print-none" role="navigation" aria-labelledby="system-breadcrumb"> <h2 id="system-breadcrumb" class="visually-hidden">Breadcrumb</h2> <ol class="breadcrumb"> <li class="breadcrumb-item"> <a href="/">Home</a> </li> <li class="breadcrumb-item"> <a href="/domains/sh-southern-hemisphere">SH - Southern Hemisphere</a> </li> </ol> </nav> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/navigation/breadcrumb.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> </div> <main class="layout__region layout__region--main main-content-wrapper"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-primary-image.html.twig * block--field-block--node--climate-dataset--field-primary-image.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-primary-image"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-primary-image.html.twig * field--node--field-primary-image---custom.html.twig * field--node--climate-dataset--field-primary-image.html.twig * field--node--field-primary-image--climate-dataset--default.html.twig * field--node--field-primary-image--climate-dataset.html.twig * field--node--field-primary-image.html.twig * field--node--climate-dataset.html.twig * field--field-primary-image.html.twig * field--entity-reference.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-primary-image field--type-entity-reference field--label-visually_hidden"> <div class="field__label visually-hidden">Teaser image</div> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image_formatter' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image-formatter.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image.html.twig' --> <img src="/sites/default/files/2022-03/u850_clim_SH_ann.png" width="639" height="645" alt="Southern Hemisphere westerly jet strength and position" loading="lazy" typeof="foaf:Image" class="img-fluid" /> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image.html.twig' --> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image-formatter.html.twig' --> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: x block--field-block--field-main-content.html.twig * block--field-block--node--climate-dataset--field-main-content.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig * block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block--field-block--field-main-content.html.twig' --> <div class="mt-3 mt-md-4 block block-layout-builder block-field-blocknodeclimate-datasetfield-main-content"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-main-content.html.twig * field--node--field-main-content---custom.html.twig * field--node--climate-dataset--field-main-content.html.twig * field--node--field-main-content--climate-dataset--default.html.twig * field--node--field-main-content--climate-dataset.html.twig * field--node--field-main-content.html.twig * field--node--climate-dataset.html.twig * field--field-main-content.html.twig * field--entity-reference-revisions.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-main-content field--type-entity-reference-revisions field--label-visually_hidden"> <div class="field__label visually-hidden">Main content</div> <div class="field__items"> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'paragraph' --> <!-- FILE NAME SUGGESTIONS: * paragraph--climate-dataset--rich-text.html.twig * paragraph--rich-text--.html.twig * paragraph--rich-text--default.html.twig * paragraph--rich-text.html.twig * paragraph--default.html.twig x paragraph.html.twig --> <!-- BEGIN OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> <div class="paragraph paragraph--type--rich-text paragraph--view-mode--default"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--paragraph--field-body--default--climate-dataset.html.twig * field--rich-text--default--field-body.html.twig * field--paragraph--field-body--default.html.twig * field--paragraph--rich-text--field-body.html.twig * field--paragraph--field-body--rich-text.html.twig * field--paragraph--field-body.html.twig * field--paragraph--rich-text.html.twig * field--field-body.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-body field--type-text-long field--label-hidden field__item"><p>The dynamics of the Southern Hemisphere westerly jet are described in terms of two indices, <em>jet strength</em> and <em>jet latitude</em>.  Here, these indices are defined using the ERA-Interim reanalysis, although other datasets, including climate models, could be used.  Although closely linked with the Southern Annular Mode (SAM) Index, these indices more precisely capture the dynamics of the jet, and may be associated with differing impacts on Antarctic sea ice and other components of the Southern Hemisphere climate system.</p> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block--field-block--field-main-content.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-key-strengths.html.twig * block--field-block--node--climate-dataset--field-key-strengths.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-key-strengths"> <h2 class="mb-md-2">Key Strengths</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-key-strengths.html.twig * field--node--field-key-strengths---custom.html.twig * field--node--climate-dataset--field-key-strengths.html.twig * field--node--field-key-strengths--climate-dataset--default.html.twig * field--node--field-key-strengths--climate-dataset.html.twig * field--node--field-key-strengths.html.twig * field--node--climate-dataset.html.twig * field--field-key-strengths.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-key-strengths field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Key Strengths</div> <div class="field__items"> <div class="field__item"><p>Provides a broad dynamical characterisation of the westerly jet that divides the system into two components that can have differing drivers and impacts. </p> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-key-limitations.html.twig * block--field-block--node--climate-dataset--field-key-limitations.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-key-limitations"> <h2 class="mb-md-2">Key Limitations</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-key-limitations.html.twig * field--node--field-key-limitations---custom.html.twig * field--node--climate-dataset--field-key-limitations.html.twig * field--node--field-key-limitations--climate-dataset--default.html.twig * field--node--field-key-limitations--climate-dataset.html.twig * field--node--field-key-limitations.html.twig * field--node--climate-dataset.html.twig * field--field-key-limitations.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-key-limitations field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Key Limitations</div> <div class="field__items"> <div class="field__item"><p>A dependence on the availability of reliable gridded atmospheric analyses or reanalyses and thus limiting the scope for deriving reliable time series prior to the post-1979 modern satellite era. </p> </div> <div class="field__item"><p>Even in the post-1979 modern satellite era, reanalysis trends can be spurious and should therefore be treated with caution.</p> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-expert-developer-guidance.html.twig * block--field-block--node--climate-dataset--field-expert-developer-guidance.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-expert-developer-guidance"> <h2 class="mb-md-2">Expert Developer Guidance</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-expert-developer-guidance.html.twig * field--node--field-expert-developer-guidance---custom.html.twig * field--node--climate-dataset--field-expert-developer-guidance.html.twig * field--node--field-expert-developer-guidance--climate-dataset--default.html.twig * field--node--field-expert-developer-guidance--climate-dataset.html.twig * field--node--field-expert-developer-guidance.html.twig * field--node--climate-dataset.html.twig * field--field-expert-developer-guidance.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-expert-developer-guidance field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Expert Developer Guidance</div> <div class="field__item"><p>The following was contributed by <strong>Dr. Thomas Bracegirdle</strong>, British Antarctic Survey (November, 2017):</p> <p>A major feature of atmospheric circulation across the globe is a circumpolar maximum in time-mean lower-tropospheric westerly winds at mid-to-high southern latitudes (positioned on average slightly south of 50°S). Due to the near-uninterrupted presence of this belt of westerlies across all longitudes it can broadly be characterised as a zonal mean westerly jet, with <em>jet strength</em> defined as the maximum in zonal mean westerlies and <em>jet latitude</em> as the latitude of this maximum. Variability and trends in the westerly jet are strongly linked to the Southern Annular Mode (SAM), whereby both poleward shifts and strengthening are associated with more positive indices of the SAM (Swart et al. 2015).</p> <p>The strong interactions between the westerly jet and other components of the Southern Hemisphere climate system have been exemplified by the recent summer-season poleward shifting and strengthening of the westerly jet in associated with the formation of the stratospheric ozone hole over Antarctica ((Thompson and Solomon 2002; Shindell and Schmidt 2004)). These changes appear to have had profound impacts on Southern Ocean sea-surface temperatures and Antarctic sea ice (Waugh et al. 2013; Purich et al. 2016), although the precise nature of these impacts remains a topic of much discussion in the literature due to complexities such as possible contrasts between shorter (sub-decadal) and longer (decadal to multi-decadal) timescale responses of the ocean/sea-ice system (Ferreira et al. 2015).</p> <p>Although post-1979 trends in the SH mid-latitude circulation project strongly onto the SAM, westerly jet diagnostics may provide further dynamical insight. For example modelling studies have found that some drivers lead to contrasting responses in jet latitude compared to jet strength (McGraw and Barnes 2016; Baker et al. 2017), which can in turn have differing impacts on other components of the SH climate system (Bracegirdle et al. in press).</p> <p>The westerly jet indices of latitude and strength are here derived from the European Centre for Medium-Range Weather Forecasts (ECMWF) Interim Reanalysis (ERA-Interim; Dee et al. (2011)). ERA-Interim has been found in a number of studies to be one of the most reliable global re-analyses in terms of representing circulation patterns and trends at high Southern latitudes (e.g. Bromwich et al. 2011; Bracegirdle and Marshall 2012). The method for calculating the jet indices broadly follows previous studies (e.g. Kidston and Gerber 2010; Son et al. 2010; Swart and Fyfe 2012) whereby, as described above, the strength and latitude of the westerly jet are identified in zonally-averaged lower-tropospheric (or near-surface) time-mean westerly wind or surface wind stress. The specific approach used here follows that of (Bracegirdle et al. in press), who calculate jet diagnostics from latitudinally-interpolated zonal mean westerly wind on the 850 hPa level (U<sub>850</sub>) between the latitudes of 75°S and 10°S. The main reason for choosing 850 hPa is that it captures the lower-tropospheric jet whilst also avoiding uncertainties associated with reanalysis estimates of wind in the atmospheric boundary layer (Kent et al. 2012), therefore allowing for more direct model-observation comparisons. </p> <p>The above method is applied to seasonal means in U<sub>850</sub> for each year between 1980 and the most recent complete year. This time period is used because ERA-Interim is available from January 1979 and December 1979 is required for the austral summer of 1980 (December 1979 through February 1980). Although other re-analyses extend further back to before the start of the modern satellite era in late 1978, the sparse in-situ observational network at high southern latitudes means that reanalysis datasets are much less reliable before this time (e.g. Bromwich and Fogt 2004). However even for linear trends in westerly jet diagnostics over the modern satellite era (post 1979), Swart et al. (2015) revealed a large inter-reanalysis uncertainty in westerly jet trends derived from six different reanalysis datasets and found that only in summer (DJF) were poleward shifting and strengthening trends consistent in sign across the re-analyses. Therefore trends over the length of the record should be treated with caution and are potentially spurious due to factors such as transitions between satellite platforms and changing in-situ data coverage.##</p> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> </main> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/layout/layout--twocol-section.html.twig' --> Fri, 29 Dec 2017 18:28:00 +0000 ryanj 1139 at https://climatedataguide.ucar.edu Amundsen Sea Low indices https://climatedataguide.ucar.edu/climate-data/amundsen-sea-low-indices <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--title.html.twig * field--node--title--rss.html.twig * field--node--climate-dataset--title.html.twig * field--node--title--climate-dataset.html.twig x field--node--title.html.twig * field--node--climate-dataset.html.twig * field--title.html.twig * field--string.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <span class="field field--name-title field--type-string field--label-hidden">Amundsen Sea Low indices </span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--uid.html.twig * field--node--uid--rss.html.twig * field--node--climate-dataset--uid.html.twig * field--node--uid--climate-dataset.html.twig x field--node--uid.html.twig * field--node--climate-dataset.html.twig * field--uid.html.twig * field--entity-reference.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--uid.html.twig' --> <span class="field field--name-uid field--type-entity-reference field--label-hidden"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'username' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/user/username.html.twig' --> <span lang="" about="/user/2" typeof="schema:Person" property="schema:name" datatype="">ryanj</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/user/username.html.twig' --> </span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--uid.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--created.html.twig * field--node--created--rss.html.twig * field--node--climate-dataset--created.html.twig * field--node--created--climate-dataset.html.twig x field--node--created.html.twig * field--node--climate-dataset.html.twig * field--created.html.twig * field--created.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--created.html.twig' --> <span class="field field--name-created field--type-created field--label-hidden">Mon, 01/25/2016 - 13:19</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--created.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'layout__twocol_section' --> <!-- FILE NAME SUGGESTIONS: x layout--twocol-section.html.twig x layout--twocol-section.html.twig * layout.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/layout/layout--twocol-section.html.twig' --> <div> <div class="layout__region layout__region--main-top breadcrumb-wrapper mt-2"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--system-breadcrumb-block.html.twig * block--system.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-system block-system-breadcrumb-block"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'breadcrumb' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/navigation/breadcrumb.html.twig' --> <nav class="mb-2 d-print-none" role="navigation" aria-labelledby="system-breadcrumb"> <h2 id="system-breadcrumb" class="visually-hidden">Breadcrumb</h2> <ol class="breadcrumb"> <li class="breadcrumb-item"> <a href="/">Home</a> </li> <li class="breadcrumb-item"> <a href="/domains/sh-southern-hemisphere">SH - Southern Hemisphere</a> </li> </ol> </nav> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/navigation/breadcrumb.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> </div> <main class="layout__region layout__region--main main-content-wrapper"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-primary-image.html.twig * block--field-block--node--climate-dataset--field-primary-image.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-primary-image"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-primary-image.html.twig * field--node--field-primary-image---custom.html.twig * field--node--climate-dataset--field-primary-image.html.twig * field--node--field-primary-image--climate-dataset--default.html.twig * field--node--field-primary-image--climate-dataset.html.twig * field--node--field-primary-image.html.twig * field--node--climate-dataset.html.twig * field--field-primary-image.html.twig * field--entity-reference.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-primary-image field--type-entity-reference field--label-visually_hidden"> <div class="field__label visually-hidden">Teaser image</div> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image_formatter' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image-formatter.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image.html.twig' --> <img src="/sites/default/files/2022-03/Hosking1-asl_index-v2_region.png" width="720" height="764" alt="Amundsen Sea Low indices " loading="lazy" typeof="foaf:Image" class="img-fluid" /> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image.html.twig' --> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image-formatter.html.twig' --> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: x block--field-block--field-main-content.html.twig * block--field-block--node--climate-dataset--field-main-content.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig * block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block--field-block--field-main-content.html.twig' --> <div class="mt-3 mt-md-4 block block-layout-builder block-field-blocknodeclimate-datasetfield-main-content"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-main-content.html.twig * field--node--field-main-content---custom.html.twig * field--node--climate-dataset--field-main-content.html.twig * field--node--field-main-content--climate-dataset--default.html.twig * field--node--field-main-content--climate-dataset.html.twig * field--node--field-main-content.html.twig * field--node--climate-dataset.html.twig * field--field-main-content.html.twig * field--entity-reference-revisions.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-main-content field--type-entity-reference-revisions field--label-visually_hidden"> <div class="field__label visually-hidden">Main content</div> <div class="field__items"> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'paragraph' --> <!-- FILE NAME SUGGESTIONS: * paragraph--climate-dataset--rich-text.html.twig * paragraph--rich-text--.html.twig * paragraph--rich-text--default.html.twig * paragraph--rich-text.html.twig * paragraph--default.html.twig x paragraph.html.twig --> <!-- BEGIN OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> <div class="paragraph paragraph--type--rich-text paragraph--view-mode--default"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--paragraph--field-body--default--climate-dataset.html.twig * field--rich-text--default--field-body.html.twig * field--paragraph--field-body--default.html.twig * field--paragraph--rich-text--field-body.html.twig * field--paragraph--field-body--rich-text.html.twig * field--paragraph--field-body.html.twig * field--paragraph--rich-text.html.twig * field--field-body.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-body field--type-text-long field--label-hidden field__item"><p>The Amundsen Sea Low (ASL) is a climatological low pressure center located over the extreme southern Pacific Ocean, off the coast of West Antarctica.  Atmospheric variability in this region is larger than anywhere else in the Southern Hemisphere, and exhibits significant correlations with both the Southern Annular Mode (SAM) and ENSO.  Given its linkages to basin-wide ENSO variability, the ASL may be thought of as a Southern Hemisphere analog to the Aleutian Low (see North Pacific Index).  The ASL plays a significant role in the climate variability of West Antarctica and the adjacent oceanic environment.  Due to the extreme variability in the ASL region, and the seasonal migration of the ASL's low-pressure center, defining a single index of the ASL is challenging.  A consistent set of indices of the ASL, including its absolute and relative central pressure, and the latitude and longitude of these central pressures, has been derived from the ECMWF reanalysis.  The term Amundsen-Bellingshausen Seas Low (ABSL) is another name for the ASL.</p> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block--field-block--field-main-content.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-key-strengths.html.twig * block--field-block--node--climate-dataset--field-key-strengths.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-key-strengths"> <h2 class="mb-md-2">Key Strengths</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-key-strengths.html.twig * field--node--field-key-strengths---custom.html.twig * field--node--climate-dataset--field-key-strengths.html.twig * field--node--field-key-strengths--climate-dataset--default.html.twig * field--node--field-key-strengths--climate-dataset.html.twig * field--node--field-key-strengths.html.twig * field--node--climate-dataset.html.twig * field--field-key-strengths.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-key-strengths field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Key Strengths</div> <div class="field__items"> <div class="field__item"><p>Captures a large fraction of atmospheric variability in the most dynamic region of the Southern Hemisphere</p> </div> <div class="field__item"><p>Correlates with anomalies in winds, sea ice, air temperatures and other variables, giving confidence in its robustness and relevance to regional climate variability</p> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-key-limitations.html.twig * block--field-block--node--climate-dataset--field-key-limitations.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-key-limitations"> <h2 class="mb-md-2">Key Limitations</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-key-limitations.html.twig * field--node--field-key-limitations---custom.html.twig * field--node--climate-dataset--field-key-limitations.html.twig * field--node--field-key-limitations--climate-dataset--default.html.twig * field--node--field-key-limitations--climate-dataset.html.twig * field--node--field-key-limitations.html.twig * field--node--climate-dataset.html.twig * field--field-key-limitations.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-key-limitations field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Key Limitations</div> <div class="field__items"> <div class="field__item"><p>Difficult to quantify the strength of the ASL due to large background variability</p> </div> <div class="field__item"><p>Short record length due to limited observations and the lack of long-term, reliable atmospheric reanalysis</p> </div> <div class="field__item"><p>Few in-situ data available to assess the reliability of the ASL indices; spurious variability and trends could arise from the use of atmospheric reanalysis</p> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-expert-developer-guidance.html.twig * block--field-block--node--climate-dataset--field-expert-developer-guidance.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-expert-developer-guidance"> <h2 class="mb-md-2">Expert Developer Guidance</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-expert-developer-guidance.html.twig * field--node--field-expert-developer-guidance---custom.html.twig * field--node--climate-dataset--field-expert-developer-guidance.html.twig * field--node--field-expert-developer-guidance--climate-dataset--default.html.twig * field--node--field-expert-developer-guidance--climate-dataset.html.twig * field--node--field-expert-developer-guidance.html.twig * field--node--climate-dataset.html.twig * field--field-expert-developer-guidance.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-expert-developer-guidance field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Expert Developer Guidance</div> <div class="field__item"><div class="page" title="Page 1"> <div class="layoutArea"> <div class="column"> <p>The following was contributed by <strong>Dr. Scott Hosking</strong> of the British Antarctic Survey, January, 2016 (updated 14 Janurary 2020 and 5 December 2022):</p> <p>The Amundsen Sea Low is a climatological low pressure system located in the Pacific sector of the Southern Ocean. In this sector, variability in sea-level pressure is greater than anywhere in the Southern Hemisphere making it challenging to isolate local fluctuations in the ASL from larger- scale shifts in atmospheric pressure. The position and strength of the ASL are key drivers of regional change over West Antarctica (Hosking et al., 2013; Coggins and McDonald, 2015).</p> </div> </div> </div> <div class="page" title="Page 1"> <div class="layoutArea"> <div class="column"> <p>There has been much recent interest in the ASL because (i) rapid retreat of Pine Island and Thwaites glaciers (McMillan et al, 2015), (ii) observed rapid warming over central West Antarctica (Bromwich et al., 2012), and (iii) increase in snowfall in coastal West Antarctica (Thomas et al., 2015).</p> </div> </div> </div> <div class="page" title="Page 2"> <div class="layoutArea"> <div class="column"> <p>Version 2 differs slightly from that described in Hosking et al. [2013] which defined the location of the ASL as the point of lowest central pressure within the ASL sector region. This updated methodology ensures that the ASL is not falsely identified in cases where there is no local minima within the defined boundaries (as is the case in some CMIP5 models). In any case, when applied to the ERA-Interim reanalysis the results are relatively insensitive to the ASL detection method employed.</p> <p>Version 3 uses an updated codebase written in Python and adopts ERA5 as the data source, which allows the indices to extend from January, 1959 to the near-present.</p> <div class="page" title="Page 2"> <div class="layoutArea"> <div class="column"> <p>The dataset website <a href="https://www.bas.ac.uk/data/absl/" target="_blank">https://www.bas.ac.uk/data/absl/ </a>has monthly, seasonal and annual data. Note that the seasonal and annual indices are computed from their respective temporally averaged two-dimensional surface pressure fields. They are not the average of the three (or twelve) points from the monthly indices. ##</p> </div> </div> </div> </div> </div> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> </main> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/layout/layout--twocol-section.html.twig' --> Mon, 25 Jan 2016 20:19:00 +0000 ryanj 1086 at https://climatedataguide.ucar.edu Marshall Southern Annular Mode (SAM) Index (Station-based) https://climatedataguide.ucar.edu/climate-data/marshall-southern-annular-mode-sam-index-station-based <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--title.html.twig * field--node--title--rss.html.twig * field--node--climate-dataset--title.html.twig * field--node--title--climate-dataset.html.twig x field--node--title.html.twig * field--node--climate-dataset.html.twig * field--title.html.twig * field--string.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <span class="field field--name-title field--type-string field--label-hidden">Marshall Southern Annular Mode (SAM) Index (Station-based)</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--uid.html.twig * field--node--uid--rss.html.twig * field--node--climate-dataset--uid.html.twig * field--node--uid--climate-dataset.html.twig x field--node--uid.html.twig * field--node--climate-dataset.html.twig * field--uid.html.twig * field--entity-reference.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--uid.html.twig' --> <span class="field field--name-uid field--type-entity-reference field--label-hidden"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'username' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/user/username.html.twig' --> <span lang="" about="/user/2" typeof="schema:Person" property="schema:name" datatype="">ryanj</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/user/username.html.twig' --> </span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--uid.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--created.html.twig * field--node--created--rss.html.twig * field--node--climate-dataset--created.html.twig * field--node--created--climate-dataset.html.twig x field--node--created.html.twig * field--node--climate-dataset.html.twig * field--created.html.twig * field--created.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--created.html.twig' --> <span class="field field--name-created field--type-created field--label-hidden">Wed, 10/28/2015 - 13:19</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--created.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'layout__twocol_section' --> <!-- FILE NAME SUGGESTIONS: x layout--twocol-section.html.twig x layout--twocol-section.html.twig * layout.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/layout/layout--twocol-section.html.twig' --> <div> <div class="layout__region layout__region--main-top breadcrumb-wrapper mt-2"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--system-breadcrumb-block.html.twig * block--system.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-system block-system-breadcrumb-block"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'breadcrumb' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/navigation/breadcrumb.html.twig' --> <nav class="mb-2 d-print-none" role="navigation" aria-labelledby="system-breadcrumb"> <h2 id="system-breadcrumb" class="visually-hidden">Breadcrumb</h2> <ol class="breadcrumb"> <li class="breadcrumb-item"> <a href="/">Home</a> </li> <li class="breadcrumb-item"> <a href="/domains/sh-southern-hemisphere">SH - Southern Hemisphere</a> </li> </ol> </nav> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/navigation/breadcrumb.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> </div> <main class="layout__region layout__region--main main-content-wrapper"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-primary-image.html.twig * block--field-block--node--climate-dataset--field-primary-image.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-primary-image"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-primary-image.html.twig * field--node--field-primary-image---custom.html.twig * field--node--climate-dataset--field-primary-image.html.twig * field--node--field-primary-image--climate-dataset--default.html.twig * field--node--field-primary-image--climate-dataset.html.twig * field--node--field-primary-image.html.twig * field--node--climate-dataset.html.twig * field--field-primary-image.html.twig * field--entity-reference.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-primary-image field--type-entity-reference field--label-visually_hidden"> <div class="field__label visually-hidden">Teaser image</div> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image_formatter' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image-formatter.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image.html.twig' --> <img src="/sites/default/files/2022-03/Marshall-SAM-F2.png" width="924" height="580" alt="Marshall Southern Annular Mode (SAM) Index (Station-based)" loading="lazy" typeof="foaf:Image" class="img-fluid" /> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image.html.twig' --> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image-formatter.html.twig' --> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: x block--field-block--field-main-content.html.twig * block--field-block--node--climate-dataset--field-main-content.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig * block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block--field-block--field-main-content.html.twig' --> <div class="mt-3 mt-md-4 block block-layout-builder block-field-blocknodeclimate-datasetfield-main-content"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-main-content.html.twig * field--node--field-main-content---custom.html.twig * field--node--climate-dataset--field-main-content.html.twig * field--node--field-main-content--climate-dataset--default.html.twig * field--node--field-main-content--climate-dataset.html.twig * field--node--field-main-content.html.twig * field--node--climate-dataset.html.twig * field--field-main-content.html.twig * field--entity-reference-revisions.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-main-content field--type-entity-reference-revisions field--label-visually_hidden"> <div class="field__label visually-hidden">Main content</div> <div class="field__items"> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'paragraph' --> <!-- FILE NAME SUGGESTIONS: * paragraph--climate-dataset--rich-text.html.twig * paragraph--rich-text--.html.twig * paragraph--rich-text--default.html.twig * paragraph--rich-text.html.twig * paragraph--default.html.twig x paragraph.html.twig --> <!-- BEGIN OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> <div class="paragraph paragraph--type--rich-text paragraph--view-mode--default"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--paragraph--field-body--default--climate-dataset.html.twig * field--rich-text--default--field-body.html.twig * field--paragraph--field-body--default.html.twig * field--paragraph--rich-text--field-body.html.twig * field--paragraph--field-body--rich-text.html.twig * field--paragraph--field-body.html.twig * field--paragraph--rich-text.html.twig * field--field-body.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-body field--type-text-long field--label-hidden field__item"><p>The station-based index of the Southern Annular Mode (SAM) is based on the zonal pressure difference between the latitudes of 40S and 65S.  As such, the SAM index measures a "see-saw" of atmospheric mass between the middle and high latitudes of the Southern Hemisphere.  Positive values of the SAM index correspond with stronger-than-average westerlies over the mid-high latitudes (50S-70S) and weaker westerlies in the mid-latitudes (30S-50S).  The SAM is the leading mode of variability in the SH atmospheric circulation on month-to-month and interannual timescales. SAM variability has large impacts on Antarctic surface temperatures, ocean circulation, and many other aspects of SH climate.  The station-based SAM index, which extends back to 1957, uses records from six stations at roughly 65S and six stations at roughly 40S.  It was developed as an alternative to reanlayses-based indices, which are of questionable quality before ~1979.  The station-based index is defined on monthly, seasonal, and annual timescales.  The NOAA Climate Prediction Center computes a daily SAM index based on reanalyses.  "Antarctic Oscillation" is another name for the SAM.</p> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block--field-block--field-main-content.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-key-strengths.html.twig * block--field-block--node--climate-dataset--field-key-strengths.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-key-strengths"> <h2 class="mb-md-2">Key Strengths</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-key-strengths.html.twig * field--node--field-key-strengths---custom.html.twig * field--node--climate-dataset--field-key-strengths.html.twig * field--node--field-key-strengths--climate-dataset--default.html.twig * field--node--field-key-strengths--climate-dataset.html.twig * field--node--field-key-strengths.html.twig * field--node--climate-dataset.html.twig * field--field-key-strengths.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-key-strengths field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Key Strengths</div> <div class="field__items"> <div class="field__item"><p>Long-term, consistent index based on a fixed number of stations</p> </div> <div class="field__item"><p>Avoids spurious trends in atmospheric reanalyses</p> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-key-limitations.html.twig * block--field-block--node--climate-dataset--field-key-limitations.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-key-limitations"> <h2 class="mb-md-2">Key Limitations</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-key-limitations.html.twig * field--node--field-key-limitations---custom.html.twig * field--node--climate-dataset--field-key-limitations.html.twig * field--node--field-key-limitations--climate-dataset--default.html.twig * field--node--field-key-limitations--climate-dataset.html.twig * field--node--field-key-limitations.html.twig * field--node--climate-dataset.html.twig * field--field-key-limitations.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-key-limitations field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Key Limitations</div> <div class="field__items"> <div class="field__item"><p>Relies on relatively few, unevenly spaced points to describe a hemispheric-scale mode of climate variability; potential to miss some variability, especially in the south Pacific</p> </div> <div class="field__item"><p>Trends in the SLP-based SAM index do not necessarily map to the kinematics of the jet (such as intensity and latitudinal position)</p> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-expert-user-guidance.html.twig * block--field-block--node--climate-dataset--field-expert-user-guidance.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-expert-user-guidance"> <h2 class="mb-md-2">Expert User Guidance</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-expert-user-guidance.html.twig * field--node--field-expert-user-guidance---custom.html.twig * field--node--climate-dataset--field-expert-user-guidance.html.twig * field--node--field-expert-user-guidance--climate-dataset--default.html.twig * field--node--field-expert-user-guidance--climate-dataset.html.twig * field--node--field-expert-user-guidance.html.twig * field--node--climate-dataset.html.twig * field--field-expert-user-guidance.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-expert-user-guidance field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Expert User Guidance</div> <div class="field__item"><p>The following was contributed by <strong>Dr. Gareth Marshall,</strong> October, 2015:</p> <p>The Southern Annular Mode (SAM) is the principal mode of variability in the Southern Hemisphere (SH) extra-tropics, describing ~30% of SH climate variability. Its spatial structure comprises synchronous pressure anomalies of opposite sign in mid and high latitudes: when pressures are anomalously high over Antarctica the SAM is defined as being in its positive phase and vice versa. Alternatively, SAM variability can be characterized as changes in the latitudinal position and strength of the SH mid-latitude jet, although recent work suggests that there is not a simple mapping between the SAM and these jet properties (Swart et al. 2015).</p> <p>There has been much recent interest in the SAM because (i) its variability has a large impact on the climate in many regions of the SH extra-tropics and high latitudes (e.g. Thompson et al. 2011): examples include Australian rainfall and Antarctic surface temperatures, and (ii) there has been a statistically significant positive trend during austral autumn and summer over the past few decades (e.g. Marshall, 2007). Modelling studies have suggested that ozone depletion is the principal cause of the trend in summer (e.g. Thompson et al. 2011) with perhaps natural variability being primarily responsible for the autumn trend (Fogt et al. 2009).</p> <p>The observation-based SAM index dataset was first developed because of the poor quality of reanalyses in the SH high latitudes before 1979 (e.g. Bromwich et al., 2007), when routine satellite sounder data over the Southern Ocean first became available. Prior to this, reanalyses tend to relax to their model climatology in southern high latitudes as there are very few data to be assimilated. Several published studies used the first NCEP-NCAR reanalysis (NNR) to demonstrate marked trends in the SAM before 1979 but other work demonstrated that such trends were predominantly due to spurious SLP trends at high latitudes (e.g. Hines et al., 2000; Marshall and Harangozo, 2000). While improved assimilation schemes in more recent reanalyses will optimize the use of the few observations available, their scarcity means that it is likely that reanalyses will always be significantly less accurate at SH high latitudes before 1979.</p> <p>Therefore, in order to produce a reliable and consistent SAM index further back in time, station observations are required. Based on the numerical definition of the SAM by Gong and Wang (1999), which is:</p> <p>SAM = <em>P<sup>*</sup></em><sub>40°S</sub> – <em>P<sup>*</sup></em><sub>65°S</sub></p> <p>where <em>P<sup>*</sup></em><sub>40°S</sub> and <em>P<sup>*</sup></em><sub>65°S</sub> are the normalized monthly zonal sea level pressure (SLP) at 40°S and 65°S, respectively, six stations located at approximately these two latitudes are used to compute the SAM (Figure 1). The methodology is discussed in detail in Marshall (2003) and at the dataset website: <a href="https://legacy.bas.ac.uk/met/gjma/sam.html" target="_blank">https://legacy.bas.ac.uk/met/gjma/sam.html</a>. The 30-year period from 1971-2000 is used for the normalization period. Note that this period is arbitrary and a switch to a different period would change the exact SAM values but would be unlikely to significantly alter any trends.</p> <p>The dataset website <a href="https://legacy.bas.ac.uk/met/gjma/sam.html" target="_blank">https://legacy.bas.ac.uk/met/gjma/sam.html</a> has monthly, seasonal and annual data. The latter should not be calculated as the mean of monthly values as the standard deviation varies significantly between different calendar months. Also included are the mean zonal SLP at both latitudes, as for some studies un-normalized data are more appropriate, and various different figures, an example of which is shown here as Figure 2.</p> <p>There are two principal limitations of the observation-based SAM index. The first is that it is attempting to describe a hemispheric-scale mode of climate variability based only on twelve points that are not equidistantly spaced. For example, there are no stations in the Pacific sector in the SH extra-tropics or in Antarctica at similar longitudes. Thus, there is the potential for the index to miss variability in this region or exaggerate its importance at longitudes where the stations are relatively close together, such as in East Antarctica. The second limitation is that the index only goes back as far as 1957. This was the date of the International Geophysical Year and prior to this there were very few observations in Antarctica. Attempts have been made to extend the data back further to the late 19<sup>th</sup> Century using statistical reconstructions based on mid-latitude observations, as outlined in Jones et al. (2009), but to date such reconstructions are relatively inconsistent and thus have a large uncertainty attached to them.</p> <p>Post 1979, the SAM can be defined as the leading Empirical Orthogonal Function (EOF) of either geopotential height or zonal wind, as the reanalyses products are much more accurate and consistent at SH high latitudes. One such example is the Climate Prediction Centre index (<a href="http://www.cpc.ncep.noaa.gov/products/precip/CWlink/daily_ao_index/aao/monthly.aao.index.b79.current.ascii.table" target="_blank">http://www.cpc.ncep.noaa.gov/products/precip/CWlink/daily_ao_index/aao/monthly.aao.index.b79.current.ascii.table</a>), which uses 700 hPa geopotential height anomalies for 20-90°S normalized to a 1979-2000 base period. The correlation between this and the observation-based SAM index is 0.83 over 35 years (420 months). Many other SAM indices have been produced and several are compared in the paper by Ho et al. (2012). ##</p> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> </main> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/layout/layout--twocol-section.html.twig' --> Wed, 28 Oct 2015 19:19:00 +0000 ryanj 1069 at https://climatedataguide.ucar.edu Surface Solar Radiation Data Set - Heliosat (SARAH) -Edition 1 https://climatedataguide.ucar.edu/climate-data/surface-solar-radiation-data-set-heliosat-sarah-edition-1 <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--title.html.twig * field--node--title--rss.html.twig * field--node--climate-dataset--title.html.twig * field--node--title--climate-dataset.html.twig x field--node--title.html.twig * field--node--climate-dataset.html.twig * field--title.html.twig * field--string.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <span class="field field--name-title field--type-string field--label-hidden">Surface Solar Radiation Data Set - Heliosat (SARAH) -Edition 1</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--uid.html.twig * field--node--uid--rss.html.twig * field--node--climate-dataset--uid.html.twig * field--node--uid--climate-dataset.html.twig x field--node--uid.html.twig * field--node--climate-dataset.html.twig * field--uid.html.twig * field--entity-reference.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--uid.html.twig' --> <span class="field field--name-uid field--type-entity-reference field--label-hidden"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'username' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/user/username.html.twig' --> <span lang="" about="/user/2" typeof="schema:Person" property="schema:name" datatype="">ryanj</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/user/username.html.twig' --> </span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--uid.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--created.html.twig * field--node--created--rss.html.twig * field--node--climate-dataset--created.html.twig * field--node--created--climate-dataset.html.twig x field--node--created.html.twig * field--node--climate-dataset.html.twig * field--created.html.twig * field--created.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--created.html.twig' --> <span class="field field--name-created field--type-created field--label-hidden">Fri, 02/27/2015 - 10:08</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--created.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'layout__twocol_section' --> <!-- FILE NAME SUGGESTIONS: x layout--twocol-section.html.twig x layout--twocol-section.html.twig * layout.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/layout/layout--twocol-section.html.twig' --> <div> <div class="layout__region layout__region--main-top breadcrumb-wrapper mt-2"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--system-breadcrumb-block.html.twig * block--system.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-system block-system-breadcrumb-block"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'breadcrumb' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/navigation/breadcrumb.html.twig' --> <nav class="mb-2 d-print-none" role="navigation" aria-labelledby="system-breadcrumb"> <h2 id="system-breadcrumb" class="visually-hidden">Breadcrumb</h2> <ol class="breadcrumb"> <li class="breadcrumb-item"> <a href="/">Home</a> </li> <li class="breadcrumb-item"> <a href="/domains/sh-southern-hemisphere">SH - Southern Hemisphere</a> </li> </ol> </nav> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/navigation/breadcrumb.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> </div> <main class="layout__region layout__region--main main-content-wrapper"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-primary-image.html.twig * block--field-block--node--climate-dataset--field-primary-image.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-primary-image"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-primary-image.html.twig * field--node--field-primary-image---custom.html.twig * field--node--climate-dataset--field-primary-image.html.twig * field--node--field-primary-image--climate-dataset--default.html.twig * field--node--field-primary-image--climate-dataset.html.twig * field--node--field-primary-image.html.twig * field--node--climate-dataset.html.twig * field--field-primary-image.html.twig * field--entity-reference.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-primary-image field--type-entity-reference field--label-visually_hidden"> <div class="field__label visually-hidden">Teaser image</div> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image_formatter' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image-formatter.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image.html.twig' --> <img src="/sites/default/files/2022-03/cm_sis_jul_2013.png" width="379" height="549" alt="Surface Solar Radiation Data Set - Heliosat (SARAH) -Edition 1" loading="lazy" typeof="foaf:Image" class="img-fluid" /> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image.html.twig' --> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image-formatter.html.twig' --> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: x block--field-block--field-main-content.html.twig * block--field-block--node--climate-dataset--field-main-content.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig * block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block--field-block--field-main-content.html.twig' --> <div class="mt-3 mt-md-4 block block-layout-builder block-field-blocknodeclimate-datasetfield-main-content"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-main-content.html.twig * field--node--field-main-content---custom.html.twig * field--node--climate-dataset--field-main-content.html.twig * field--node--field-main-content--climate-dataset--default.html.twig * field--node--field-main-content--climate-dataset.html.twig * field--node--field-main-content.html.twig * field--node--climate-dataset.html.twig * field--field-main-content.html.twig * field--entity-reference-revisions.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-main-content field--type-entity-reference-revisions field--label-visually_hidden"> <div class="field__label visually-hidden">Main content</div> <div class="field__items"> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'paragraph' --> <!-- FILE NAME SUGGESTIONS: * paragraph--climate-dataset--rich-text.html.twig * paragraph--rich-text--.html.twig * paragraph--rich-text--default.html.twig * paragraph--rich-text.html.twig * paragraph--default.html.twig x paragraph.html.twig --> <!-- BEGIN OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> <div class="paragraph paragraph--type--rich-text paragraph--view-mode--default"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--paragraph--field-body--default--climate-dataset.html.twig * field--rich-text--default--field-body.html.twig * field--paragraph--field-body--default.html.twig * field--paragraph--rich-text--field-body.html.twig * field--paragraph--field-body--rich-text.html.twig * field--paragraph--field-body.html.twig * field--paragraph--rich-text.html.twig * field--field-body.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-body field--type-text-long field--label-hidden field__item"><p><span style="font-family: 'Arial','sans-serif';" lang="EN-GB" xml:lang="EN-GB" xml:lang="EN-GB">"The Surface Solar Radiation Data Set - Heliosat (SARAH) is a satellite-based climatology of the solar surface irradiance (SIS), the surface direct normalized irradiance (DNI) and the effective cloud albedo (CAL) derived from satellite observations of the visible channels of the MVIRI and SEVIRI instruments onboard the geostationary Meteosat satellites. The data are available from 1983 to 2013 and cover the region ±65° longitude and ±65° latitude. The products are available as monthly, daily, and hourly averages on a regular latitude/longitude grid with a spatial resolution of 0.05° x 0.05°. The data set is complemented with a comprehensive documentation of the applied algorithms as well as validation studies and user guidance."</span></p> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block--field-block--field-main-content.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-key-strengths.html.twig * block--field-block--node--climate-dataset--field-key-strengths.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-key-strengths"> <h2 class="mb-md-2">Key Strengths</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-key-strengths.html.twig * field--node--field-key-strengths---custom.html.twig * field--node--climate-dataset--field-key-strengths.html.twig * field--node--field-key-strengths--climate-dataset--default.html.twig * field--node--field-key-strengths--climate-dataset.html.twig * field--node--field-key-strengths.html.twig * field--node--climate-dataset.html.twig * field--field-key-strengths.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-key-strengths field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Key Strengths</div> <div class="field__items"> <div class="field__item"><p>Very high resolution; hourly/daily/monthly</p> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-key-limitations.html.twig * block--field-block--node--climate-dataset--field-key-limitations.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-key-limitations"> <h2 class="mb-md-2">Key Limitations</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-key-limitations.html.twig * field--node--field-key-limitations---custom.html.twig * field--node--climate-dataset--field-key-limitations.html.twig * field--node--field-key-limitations--climate-dataset--default.html.twig * field--node--field-key-limitations--climate-dataset.html.twig * field--node--field-key-limitations.html.twig * field--node--climate-dataset.html.twig * field--field-key-limitations.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-key-limitations field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Key Limitations</div> <div class="field__items"> <div class="field__item"><p>Regional coverage </p> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> </main> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/layout/layout--twocol-section.html.twig' --> Fri, 27 Feb 2015 17:08:00 +0000 ryanj 1053 at https://climatedataguide.ucar.edu Southern Ocean State Estimate (SOSE) https://climatedataguide.ucar.edu/climate-data/southern-ocean-state-estimate-sose <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--title.html.twig * field--node--title--rss.html.twig * field--node--climate-dataset--title.html.twig * field--node--title--climate-dataset.html.twig x field--node--title.html.twig * field--node--climate-dataset.html.twig * field--title.html.twig * field--string.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <span class="field field--name-title field--type-string field--label-hidden">Southern Ocean State Estimate (SOSE)</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--uid.html.twig * field--node--uid--rss.html.twig * field--node--climate-dataset--uid.html.twig * field--node--uid--climate-dataset.html.twig x field--node--uid.html.twig * field--node--climate-dataset.html.twig * field--uid.html.twig * field--entity-reference.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--uid.html.twig' --> <span class="field field--name-uid field--type-entity-reference field--label-hidden"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'username' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/user/username.html.twig' --> <span lang="" about="/user/2" typeof="schema:Person" property="schema:name" datatype="">ryanj</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/user/username.html.twig' --> </span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--uid.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--created.html.twig * field--node--created--rss.html.twig * field--node--climate-dataset--created.html.twig * field--node--created--climate-dataset.html.twig x field--node--created.html.twig * field--node--climate-dataset.html.twig * field--created.html.twig * field--created.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--created.html.twig' --> <span class="field field--name-created field--type-created field--label-hidden">Sun, 09/22/2013 - 13:18</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--created.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'layout__twocol_section' --> <!-- FILE NAME SUGGESTIONS: x layout--twocol-section.html.twig x layout--twocol-section.html.twig * layout.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/layout/layout--twocol-section.html.twig' --> <div> <div class="layout__region layout__region--main-top breadcrumb-wrapper mt-2"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--system-breadcrumb-block.html.twig * block--system.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-system block-system-breadcrumb-block"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'breadcrumb' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/navigation/breadcrumb.html.twig' --> <nav class="mb-2 d-print-none" role="navigation" aria-labelledby="system-breadcrumb"> <h2 id="system-breadcrumb" class="visually-hidden">Breadcrumb</h2> <ol class="breadcrumb"> <li class="breadcrumb-item"> <a href="/">Home</a> </li> <li class="breadcrumb-item"> <a href="/domains/sh-southern-hemisphere">SH - Southern Hemisphere</a> </li> </ol> </nav> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/navigation/breadcrumb.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> </div> <main class="layout__region layout__region--main main-content-wrapper"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-primary-image.html.twig * block--field-block--node--climate-dataset--field-primary-image.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-primary-image"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-primary-image.html.twig * field--node--field-primary-image---custom.html.twig * field--node--climate-dataset--field-primary-image.html.twig * field--node--field-primary-image--climate-dataset--default.html.twig * field--node--field-primary-image--climate-dataset.html.twig * field--node--field-primary-image.html.twig * field--node--climate-dataset.html.twig * field--field-primary-image.html.twig * field--entity-reference.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-primary-image field--type-entity-reference field--label-visually_hidden"> <div class="field__label visually-hidden">Teaser image</div> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image_formatter' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image-formatter.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image.html.twig' --> <img src="/sites/default/files/2022-03/SOSE-F1.png" width="1158" height="1017" alt="Southern Ocean State Estimate (SOSE)" loading="lazy" typeof="foaf:Image" class="img-fluid" /> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image.html.twig' --> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image-formatter.html.twig' --> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: x block--field-block--field-main-content.html.twig * block--field-block--node--climate-dataset--field-main-content.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig * block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block--field-block--field-main-content.html.twig' --> <div class="mt-3 mt-md-4 block block-layout-builder block-field-blocknodeclimate-datasetfield-main-content"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-main-content.html.twig * field--node--field-main-content---custom.html.twig * field--node--climate-dataset--field-main-content.html.twig * field--node--field-main-content--climate-dataset--default.html.twig * field--node--field-main-content--climate-dataset.html.twig * field--node--field-main-content.html.twig * field--node--climate-dataset.html.twig * field--field-main-content.html.twig * field--entity-reference-revisions.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-main-content field--type-entity-reference-revisions field--label-visually_hidden"> <div class="field__label visually-hidden">Main content</div> <div class="field__items"> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'paragraph' --> <!-- FILE NAME SUGGESTIONS: * paragraph--climate-dataset--rich-text.html.twig * paragraph--rich-text--.html.twig * paragraph--rich-text--default.html.twig * paragraph--rich-text.html.twig * paragraph--default.html.twig x paragraph.html.twig --> <!-- BEGIN OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> <div class="paragraph paragraph--type--rich-text paragraph--view-mode--default"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--paragraph--field-body--default--climate-dataset.html.twig * field--rich-text--default--field-body.html.twig * field--paragraph--field-body--default.html.twig * field--paragraph--rich-text--field-body.html.twig * field--paragraph--field-body--rich-text.html.twig * field--paragraph--field-body.html.twig * field--paragraph--rich-text.html.twig * field--field-body.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-body field--type-text-long field--label-hidden field__item"><p>The Southern Ocean State Estimate (SOSE) is a model-generated best fit to Southern Ocean observations.  As such, it provides a quantitatively useful climatology of the mean-state of the Southern Ocean.  Technically, SOSE is a solution to the MITgcm.  SOSE is a gridded dataset at 1/6 ° horizontal resolution, available at timesteps from daily to annually.  Observations used include Argo float profiles, shipboard CTD measurements, various mooring data, satellite measurements of sea surface height and sea ice, among others. Caveats about the use of SOSE are broadly similar to issues with reanalyses, in that the SOSE is most reliable in regions and for variables with good observational coverage, and more uncertain in regions and for variables with fewer observational constraints.  Misfits to observations can also arise due to errors in the assimilation procedure and model biases.  In light of these issues, numerous validations of SOSE have been conducted, and the major biases in SOSE are well documented, as described in the Expert Guidance section of this webpage.  For climate model evaluation, SOSE provides advantages over other climatologies such as the World Ocean Atlas by providing a self-consistent state estimate that satisfies momentum, volume, heat and freshwater conservation.</p> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block--field-block--field-main-content.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-key-strengths.html.twig * block--field-block--node--climate-dataset--field-key-strengths.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-key-strengths"> <h2 class="mb-md-2">Key Strengths</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-key-strengths.html.twig * field--node--field-key-strengths---custom.html.twig * field--node--climate-dataset--field-key-strengths.html.twig * field--node--field-key-strengths--climate-dataset--default.html.twig * field--node--field-key-strengths--climate-dataset.html.twig * field--node--field-key-strengths.html.twig * field--node--climate-dataset.html.twig * field--field-key-strengths.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-key-strengths field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Key Strengths</div> <div class="field__items"> <div class="field__item"><p>Dynamically consistent, best-fit to available observations</p> </div> <div class="field__item"><p>High spatial (1/6 ° ) and temporal (daily) resolutions</p> </div> <div class="field__item"><p>Major biases are well documented</p> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-key-limitations.html.twig * block--field-block--node--climate-dataset--field-key-limitations.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-key-limitations"> <h2 class="mb-md-2">Key Limitations</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-key-limitations.html.twig * field--node--field-key-limitations---custom.html.twig * field--node--climate-dataset--field-key-limitations.html.twig * field--node--field-key-limitations--climate-dataset--default.html.twig * field--node--field-key-limitations--climate-dataset.html.twig * field--node--field-key-limitations.html.twig * field--node--climate-dataset.html.twig * field--field-key-limitations.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-key-limitations field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Key Limitations</div> <div class="field__items"> <div class="field__item"><p>Contains notable inconsistencies with observations, including a too-shallow pycnocline in the subpolar gyres, and too broad of a range in mixed-layer depth</p> </div> <div class="field__item"><p>No explicit uncertainty calculations provided</p> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-expert-developer-guidance.html.twig * block--field-block--node--climate-dataset--field-expert-developer-guidance.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-expert-developer-guidance"> <h2 class="mb-md-2">Expert Developer Guidance</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-expert-developer-guidance.html.twig * field--node--field-expert-developer-guidance---custom.html.twig * field--node--climate-dataset--field-expert-developer-guidance.html.twig * field--node--field-expert-developer-guidance--climate-dataset--default.html.twig * field--node--field-expert-developer-guidance--climate-dataset.html.twig * field--node--field-expert-developer-guidance.html.twig * field--node--climate-dataset.html.twig * field--field-expert-developer-guidance.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-expert-developer-guidance field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Expert Developer Guidance</div> <div class="field__item"><p>The following was contributed by <strong>Matthew Mazloff</strong>, September, 2016:</p> <p>A 2005-2010 Southern Ocean state estimate (SOSE) has been produced and made available (<a href="http://sose.ucsd.edu" target="_blank">http://sose.ucsd.edu</a>). The mean circulation is shown in Figure 1. It is based on the setup described in Mazloff et al. (2010). The goal of the the SOSE effort it to provide a basis for analyzing the underlying physics controlling the circulation and to provide a quantitatively useful climate baseline. This contribution to the Climate Data Guide is in keeping with the latter goal. SOSE is a dynamically mapped product, and like other mapped products has weaknesses due primarily to model error and lack of constraints. Here we inform use of the state estimate.</p> <p>The SOSE is a solution to the MITgcm. The model is configured at 1/6 ° resolution and 42 depth levels of varying thickness. It has a sea ice model, and uses the KPP mixed layer parameterization. An atmospheric boundary layer scheme is used to determine fluxes of heat, freshwater (salt), and momentum via bulk formulae (Large and Yeager 2008). What makes SOSE unique is that the initial conditions, the northern boundary condition, and the atmospheric state are solved for via the adjoint method (also known as 4D-Var). The air-sea exchanges produced are constrained to be within a reasonable range, and often correct known biases in the first guess fluxes. For more on the fluxes from SOSE see <a href="http://sose.ucsd.edu/TechDocs/SOSE_verification_example_JAN_26_2015o.pdf" target="_blank">http://sose.ucsd.edu/TechDocs/SOSE verification example JAN 26 2015o.pdf</a> or Cerovecki et al. (2011).</p> <p>SOSE constraints come from various sources. In situ measurements include those that were available from the National Oceanographic Data Center (NODC; <a href="https://www.nodc.noaa.gov" target="_blank">https://www.nodc.noaa.gov</a>). This included shipboard CTD measurements, instrument-mounted elephant seal profiles (now known as the MEOP program), and Argo float profiles. The CliVar and Carbon Hydrographic Data Office (CCHDO) was also used, and redundancies between this repository and NODC were removed. Expendable bathythermograph (XBT) profiles were obtained from <a href="http://www-hrx.ucsd.edu" target="_blank">http://www-hrx.ucsd.edu</a>. Process study field program data was also used as a constraint when available. Measurements from these include those taken as part of the Diapycnal and Isopycnal Mixing Experiment in the Southern Ocean (DIMES) project, the mooring array in Drake Passage from the cDrake program, and the shipboard and mooring data in the Amundsen Sea from the Oden expeditions. Measurements from the Antarctic Marine Living Resources Long Term Ecological Research program (AMLR-LTER) were also used. Satellite measurements included sea surface height measurements obtained from the Radar Altimetry Database System (RADS; <a href="http://rads.tudelft.nl" target="_blank">http://rads.tudelft.n</a>l), optimally interpolated sea surface temperature from microwave radiometers (<a href="http://www.remss.com" target="_blank">http://www.remss.com</a>), sea ice concentrations from the National Snow and Ice Data Center (<a href="https://nsidc.org" target="_blank">https://nsidc.org</a>). Constraints also included bottom pressure estimates (<a href="http://grace.jpl.nasa.gov/data/get-data/ocean-bottom-pressure" target="_blank">http://grace.jpl.nasa.gov/data/get-data/ocean-bottom-pressure</a>) and mean dynamic topography obtained from the Technical University of Denmark (<a href="http://www.space.dtu.dk/english" target="_blank">http://www.space.dtu.dk/english</a>).</p> <p>As a mapped product the SOSE output may be easily compared to the ocean state from climate models. To understand the importance of discrepancies, however, requires understanding where SOSE is consistent with observations and where it is problematic. Uncertainty in SOSE arises from lack of constraints and model errors. One can get a feel for both components by looking at the fit to Argo measurements. In regions where no misfit is plotted the solution is likely uncertain due to lack of sufficient constraints. In regions where there is a large misfit to Argo it is likely that errors in the assimilation procedure produced an uncertain SOSE.</p> <p> </p> <p>Below we answer some “general Climate Data Guide questions."</p> <p> </p> <p><strong>What are the key limitations of this data set?</strong></p> <p>The SOSE solution does have some inconsistencies with the observations. With adjoint method optimization it is often most challenging to fit the halocline and thermocline variability, and as a measure of this fit we compare the solution to Argo at 100m. Figure (2) and (3) shows the model is too warm and salty at this depth poleward of 60° S. This implies that the pycnocline is too shallow in the subpolar gyres, consistent with the bias assessment for the Amundsen Sea in Rodriguez et al. (2016). Another significant bias is that the Argentine basin is too cold and fresh. A mean bias is not obvious in the Antarctic Circumpolar Current. At 1,500 m time mean biases are apparent, but far less significant (Fig. 4 and 5). A notable bias is that the Agulhas Retroflection and Subantarctic Front region in the Indian Sector is warmer and fresher than observed.</p> <p>Upper ocean stratification is assessed here (Figures 6-9) by sampling the model as Argo sampled the true ocean, and then estimating mixed layer depth from those profiles by calculating the depth where the potential density exceeds the surface potential density by 0.3 kg m<sup>−3</sup>. Though differences are subtle, it is often the case that when observed mixed layers are shallow the SOSE mixed layers are too shallow, and when observed mixed layers are deep the SOSE mixed layers are too deep.</p> <p>Though not a user-friendly document, <a href="http://sose.ucsd.edu/TechDocs/combinedpdf_iter100.pdf" target="_blank">http://sose.ucsd.edu/TechDocs/combinedpdf iter100.pdf</a>, does provide more comparisons to in situ constraints and may be useful if there is a specific comparison one wishes to investigate. More examples of validation are given in the next section. Users are also encouraged to contact us to discuss SOSE limitations (contact information at <a href="http://sose.ucsd.edu" target="_blank">http://sose.ucsd.edu</a>).</p> <p><strong><br /></strong></p> <p><strong>What are the key strengths of this data set?</strong></p> <p>The great benefit of the SOSE solution is that it is a gridded product that obeys model physics and is largely consistent with observations. That it is a model solution makes it accessible to a large user community. As noted directly above, there are some inconsistencies between the SOSE solution and observations. These are, however, documented. Besides the validation above, documentation can be found on <a href="http://sose.ucsd.edu" target="_blank">http://sose.ucsd.edu</a> and in numerous publications. For example, extensive validation of the surface hydrography and sea ice is in the supplementary material of Abernathey et al. (2016). Extensive validation of the properties and evolution of mode water has been published in Cerovecki and Mazloff (2015) and at <a href="http://sose.ucsd.edu/TechDocs/Cerovecki_SOSE60_biases.pdf" target="_blank">http://sose.ucsd.edu/TechDocs/Cerovecki SOSE60 biases.pdf</a>. The mean sea surface height is discussed in Griesel et al. (2012). The velocity structure in Drake Passage is compared to observations in Firing et al. (2011). Assessment of the surface fluxes is available in Cerovecki et al. (2011). Some of these references evaluate older SOSE iterations, but in general the conclusions hold for the most recent published SOSE solution available at <a href="http://sose.ucsd.edu/sose_stateestimation_data_05to10.html" target="_blank">http://sose.ucsd.edu/sose state estimation data 05to10.htm</a>l. Extensive documentation makes it possible to determine the accuracy of SOSE with respect to a certain metric, dataset, or region.</p> <p> We note that this SOSE setup is no longer under development. Current development is towards the goal of estimating the Southern Ocean carbon cycle as part of the Southern Ocean Carbon and Climate Observations and Modeling project (<a href="http://soccom.princeton.edu/" target="_blank">http://soccom.princeton.edu/)</a>. The validation of the solution discussed here does not reflect the biogeochemical SOSE effort. Validation for that effort is being documented at <a href="http://sose.ucsd.edu/bsose_valid.html" target="_blank">http://sose.ucsd.edu/bsose valid.html</a></p> <p> </p> <p><strong>What are the typical research applications of this data set?</strong></p> <p>SOSE is an estimate of the baseline Southern Ocean state, which may be used to validate climate models. It is also a resource for understanding the Southern Ocean governing dynamics. It has been used, for example, to understand what governs the SO momentum budget (Mazloff et al. 2014; Masich et al. 2015) and heat budget (Tamsitt et al. 2016).</p> <p> </p> <p><strong>What are the most common mistakes that users encounter when processing or interpreting these data?</strong></p> <p>There is no “nudging” to the observational constraints in SOSE (i.e. no unphysical sources or sinks in the governing dynamics). Because we have a strong constraint to obey model physics the fronts and eddies are usually not in the right place at the right time. The initial goal of SOSE is to attain consistency with the observed large scale ocean structure.</p> <p>The resolution and constraints are poor near Antarctica. SOSE has been used to study regions poleward of the ACC, however, one should keep in mind the heightened uncertainty in this region.</p> <p> </p> <p><strong>What are some comparable data sets?</strong></p> <p>SOSE is produced by the consortium for Estimating the Circulation and Climate of the Ocean (ECCO; <a href="http://ecco-group.org/" target="_blank">http://ecco-group.org/</a>). Comparable datasets are produced by this group, including a global ocean state estimate for the years 1992 to 2015 (Forget et al. 2015). See <a href="http://ecco-group.org/products.htm" target="_blank">http://ecco-group.org/products.htm</a> for a list of ECCO products.</p> <p>Climatologies (e.g. the World Ocean Atlas) are often used to evaluate climate models, and SOSE may also be used this way. There will be differences between SOSE and climatologies due to discrepancies in the way the products were derived and the constraints used. No mapping method is truly optimal. Weaknesses in SOSE with respect to climatologies include the fact that SOSE is more likely to introduce biases and drifts due to numerical model errors. Climatologies have errors due to assumptions in the prescribed spatial correlation scales and a poor accounting for temporal correlations. As observational density increases objectively mapped products can better account for temporal information, and we are now seeing this with the Argo objectively mapped product (<a href="http://sio-argo.ucsd.edu/RG_Climatology.html" target="_blank">http://sio-argo.ucsd.edu/RG Climatology.html</a>). Nevertheless, these climatologies only map temperature and salinity and do not propagate information between other components of the system. An advantage of the SOSE resource is that it provides a self-consistent mapped state, with stable stratification and velocities that satisfy momentum conservation.</p> <p> </p> <p><strong>How is uncertainty characterized in these data?</strong></p> <p>A formal uncertainty map is not provided. One can gauge uncertainty as discussed above in the section on “key limitations”</p> <p> </p> <p><strong>Were corrections made to account for changes in observing systems or practices, sampling density, satellite drift, or similar issues?</strong></p> <p>The time period of the optimization, 2005–2010, is one where the Southern Ocean observing system was rather stable. It was not necessary to account for any changes in the the observing system. Though the optimization procedure for 2005-2007 was different than 2008-2010, we do not believe it led to a change in the consistency with observations in these two periods.</p> <p> </p> <p><strong>How do I best compare these data with model output?</strong></p> <p>As the SOSE is model output, it is rather straightforward to compare to other model solutions. SOSE is on a C-grid at 1/6 ° resolution and interpolation is likely necessary. SOSE is available as daily, 5-day, monthly, and annual averages at <a href="http://sose.ucsd.edu/sose_stateestimation_data_05to10.html" target="_blank">http://sose.ucsd.edu/sose stateestimation data 05to10.html</a>. SOSE uses partial cells; for integrated calculations (e.g. transport) one should use the appropriate cell height fractions. Please contact us if you have any questions (contact information at <a href="http://sose.ucsd.edu" target="_blank">http://sose.ucsd.edu</a>).</p> <p> </p> <p><strong>Are there spurious (non-climatic) features in the temporal record?</strong></p> <p>There should be no spurious (non-climatic) features in the temporal record. There is, however, a known adiabatic drift in the circumpolar deep water classes in the Pacific Sector. This drift is discussed in Cerovecki and Mazloff (2015).</p> <p> </p> <p><strong>Acknowledgments</strong></p> <p>SOSE was produced by the ECCO consortium with support from several NASA and NSF grants. Computational resourced were provided by the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by NSF grant number MCA06N007. We are grateful to the very large group of oceanographers who collected and processed the observations used here; without whom none of this would be possible.</p> <p>When using the SOSE solution please reference Mazloff et al. (2010). ##</p> <p> </p> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> </main> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/layout/layout--twocol-section.html.twig' --> Sun, 22 Sep 2013 19:18:00 +0000 ryanj 971 at https://climatedataguide.ucar.edu Global Monthly EASE-Grid Snow Water Equivalent Climatology: SSMR, SSMI https://climatedataguide.ucar.edu/climate-data/global-monthly-ease-grid-snow-water-equivalent-climatology-ssmr-ssmi <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--title.html.twig * field--node--title--rss.html.twig * field--node--climate-dataset--title.html.twig * field--node--title--climate-dataset.html.twig x field--node--title.html.twig * field--node--climate-dataset.html.twig * field--title.html.twig * field--string.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <span class="field field--name-title field--type-string field--label-hidden">Global Monthly EASE-Grid Snow Water Equivalent Climatology: SSMR, SSMI</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--uid.html.twig * field--node--uid--rss.html.twig * field--node--climate-dataset--uid.html.twig * field--node--uid--climate-dataset.html.twig x field--node--uid.html.twig * field--node--climate-dataset.html.twig * field--uid.html.twig * field--entity-reference.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--uid.html.twig' --> <span class="field field--name-uid field--type-entity-reference field--label-hidden"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'username' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/user/username.html.twig' --> <span lang="" about="/user/2" typeof="schema:Person" property="schema:name" datatype="">ryanj</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/user/username.html.twig' --> </span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--uid.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--created.html.twig * field--node--created--rss.html.twig * field--node--climate-dataset--created.html.twig * field--node--created--climate-dataset.html.twig x field--node--created.html.twig * field--node--climate-dataset.html.twig * field--created.html.twig * field--created.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 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field--field-primary-image.html.twig * field--entity-reference.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-primary-image field--type-entity-reference field--label-visually_hidden"> <div class="field__label visually-hidden">Teaser image</div> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image_formatter' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image-formatter.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image.html.twig' --> <img src="/sites/default/files/2022-03/teaser_images_554.png" width="1043" height="1041" alt="Global Monthly EASE-Grid Snow Water Equivalent Climatology: SSMR, SSMI" loading="lazy" typeof="foaf:Image" class="img-fluid" /> <!-- END OUTPUT from 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block-field-blocknodeclimate-datasetfield-main-content"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-main-content.html.twig * field--node--field-main-content---custom.html.twig * field--node--climate-dataset--field-main-content.html.twig * field--node--field-main-content--climate-dataset--default.html.twig * field--node--field-main-content--climate-dataset.html.twig * field--node--field-main-content.html.twig * field--node--climate-dataset.html.twig * field--field-main-content.html.twig * field--entity-reference-revisions.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-main-content field--type-entity-reference-revisions field--label-visually_hidden"> <div class="field__label visually-hidden">Main content</div> <div class="field__items"> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'paragraph' --> <!-- FILE NAME SUGGESTIONS: * paragraph--climate-dataset--rich-text.html.twig * paragraph--rich-text--.html.twig * paragraph--rich-text--default.html.twig * paragraph--rich-text.html.twig * paragraph--default.html.twig x paragraph.html.twig --> <!-- BEGIN OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> <div class="paragraph paragraph--type--rich-text paragraph--view-mode--default"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--paragraph--field-body--default--climate-dataset.html.twig * field--rich-text--default--field-body.html.twig * field--paragraph--field-body--default.html.twig * field--paragraph--rich-text--field-body.html.twig * field--paragraph--field-body--rich-text.html.twig * field--paragraph--field-body.html.twig * field--paragraph--rich-text.html.twig * field--field-body.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-body field--type-text-long field--label-hidden field__item"><p>This data set comprises global, monthly satellite-derived snow water equivalent (SWE) climatologies from November 1978 through May 2007, and is updated with more recent data periodically. Global data are gridded to the<br /> Northern and Southern 25 km Equal-Area Scalable Earth Grids (EASE-Grids). Global snow water equivalent is derived from Scanning Multichannel Microwave Radiometer (SMMR) and selected Special Sensor Microwave/Imagers (SSM/I). Northern Hemisphere data are enhanced with snow cover frequencies derived from the NOAA Northern Hemisphere EASE-Grid Weekly Snow Cover and Sea Ice Extent Version 2 data (the snow charts were not produced for the Southern Hemisphere). These data are suitable for continental-scale time-series studies of snow cover and water equivalent.</p> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block--field-block--field-main-content.html.twig' --> </main> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/layout/layout--twocol-section.html.twig' --> Tue, 16 Apr 2013 16:47:00 +0000 ryanj 920 at https://climatedataguide.ucar.edu Sea Ice Concentration data from NOAA OI https://climatedataguide.ucar.edu/climate-data/sea-ice-concentration-data-noaa-oi <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--title.html.twig * field--node--title--rss.html.twig * field--node--climate-dataset--title.html.twig * field--node--title--climate-dataset.html.twig x field--node--title.html.twig * field--node--climate-dataset.html.twig * field--title.html.twig * field--string.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <span class="field field--name-title field--type-string field--label-hidden">Sea Ice Concentration data from NOAA OI</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--uid.html.twig * field--node--uid--rss.html.twig * field--node--climate-dataset--uid.html.twig * field--node--uid--climate-dataset.html.twig x field--node--uid.html.twig * 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field--node--climate-dataset--created.html.twig * field--node--created--climate-dataset.html.twig x field--node--created.html.twig * field--node--climate-dataset.html.twig * field--created.html.twig * field--created.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--created.html.twig' --> <span class="field field--name-created field--type-created field--label-hidden">Tue, 07/24/2012 - 08:23</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--created.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'layout__twocol_section' --> <!-- FILE NAME SUGGESTIONS: x layout--twocol-section.html.twig x layout--twocol-section.html.twig * layout.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/layout/layout--twocol-section.html.twig' --> <div> <div class="layout__region layout__region--main-top breadcrumb-wrapper mt-2"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--system-breadcrumb-block.html.twig * block--system.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-system block-system-breadcrumb-block"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'breadcrumb' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/navigation/breadcrumb.html.twig' --> <nav class="mb-2 d-print-none" role="navigation" aria-labelledby="system-breadcrumb"> <h2 id="system-breadcrumb" class="visually-hidden">Breadcrumb</h2> <ol class="breadcrumb"> <li class="breadcrumb-item"> <a href="/">Home</a> </li> <li class="breadcrumb-item"> <a href="/domains/sh-southern-hemisphere">SH - Southern Hemisphere</a> </li> </ol> </nav> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/navigation/breadcrumb.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> </div> <main class="layout__region layout__region--main main-content-wrapper"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-primary-image.html.twig * block--field-block--node--climate-dataset--field-primary-image.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-primary-image"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-primary-image.html.twig * field--node--field-primary-image---custom.html.twig * field--node--climate-dataset--field-primary-image.html.twig * field--node--field-primary-image--climate-dataset--default.html.twig * field--node--field-primary-image--climate-dataset.html.twig * field--node--field-primary-image.html.twig * field--node--climate-dataset.html.twig * field--field-primary-image.html.twig * field--entity-reference.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-primary-image field--type-entity-reference field--label-visually_hidden"> <div class="field__label visually-hidden">Teaser image</div> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image_formatter' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image-formatter.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image.html.twig' --> <img src="/sites/default/files/2022-03/teaser_images_599.png" width="797" height="937" alt="Sea Ice Concentration data from NOAA OI" loading="lazy" typeof="foaf:Image" class="img-fluid" /> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image.html.twig' --> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image-formatter.html.twig' --> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: x block--field-block--field-main-content.html.twig * block--field-block--node--climate-dataset--field-main-content.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig * block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block--field-block--field-main-content.html.twig' --> <div class="mt-3 mt-md-4 block block-layout-builder block-field-blocknodeclimate-datasetfield-main-content"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-main-content.html.twig * field--node--field-main-content---custom.html.twig * field--node--climate-dataset--field-main-content.html.twig * field--node--field-main-content--climate-dataset--default.html.twig * field--node--field-main-content--climate-dataset.html.twig * field--node--field-main-content.html.twig * field--node--climate-dataset.html.twig * field--field-main-content.html.twig * field--entity-reference-revisions.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-main-content field--type-entity-reference-revisions field--label-visually_hidden"> <div class="field__label visually-hidden">Main content</div> <div class="field__items"> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'paragraph' --> <!-- FILE NAME SUGGESTIONS: * paragraph--climate-dataset--rich-text.html.twig * paragraph--rich-text--.html.twig * paragraph--rich-text--default.html.twig * paragraph--rich-text.html.twig * paragraph--default.html.twig x paragraph.html.twig --> <!-- BEGIN OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> <div class="paragraph paragraph--type--rich-text paragraph--view-mode--default"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--paragraph--field-body--default--climate-dataset.html.twig * field--rich-text--default--field-body.html.twig * field--paragraph--field-body--default.html.twig * field--paragraph--rich-text--field-body.html.twig * field--paragraph--field-body--rich-text.html.twig * field--paragraph--field-body.html.twig * field--paragraph--rich-text.html.twig * field--field-body.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-body field--type-text-long field--label-hidden field__item"><p>The NOAA Optimal Interpolation (OI) v2 sea ice data set contains gridded, weekly or monthly resolution sea ice concentration estimates for both the Northern and Southern Hemispheres. It is intended as a consistent analyses for input into SST analyses (and is the basis for calculating SSTs in sea ice zones for the OI SST data) or as boundary conditions for atmospheric models. The sea ice portion of NOAA OI v2 is produced similarly to HadISST sea ice, using adjusted passive microwave derived sea ice data from from the NASA Goddard NASA Team algorithm followed by operational sea ice data from NCEP. Users should be aware that the NOAA OI sea ice contains similar discontinuities as HadISST in recent years (see Screen, 2011).</p> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block--field-block--field-main-content.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-key-strengths.html.twig * block--field-block--node--climate-dataset--field-key-strengths.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-key-strengths"> <h2 class="mb-md-2">Key Strengths</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-key-strengths.html.twig * field--node--field-key-strengths---custom.html.twig * field--node--climate-dataset--field-key-strengths.html.twig * field--node--field-key-strengths--climate-dataset--default.html.twig * field--node--field-key-strengths--climate-dataset.html.twig * field--node--field-key-strengths.html.twig * field--node--climate-dataset.html.twig * field--field-key-strengths.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-key-strengths field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Key Strengths</div> <div class="field__items"> <div class="field__item"><p>Gridded, long-term weekly or monthly data set convenient for modeling or analyses</p> </div> <div class="field__item"><p>Regularly updated</p> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-key-limitations.html.twig * block--field-block--node--climate-dataset--field-key-limitations.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-key-limitations"> <h2 class="mb-md-2">Key Limitations</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-key-limitations.html.twig * field--node--field-key-limitations---custom.html.twig * field--node--climate-dataset--field-key-limitations.html.twig * field--node--field-key-limitations--climate-dataset--default.html.twig * field--node--field-key-limitations--climate-dataset.html.twig * field--node--field-key-limitations.html.twig * field--node--climate-dataset.html.twig * field--field-key-limitations.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-key-limitations field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Key Limitations</div> <div class="field__items"> <div class="field__item"><p>Higher resolution and more homogenous (single algorithm) data are available for the modern satellite period, 1979-present.</p> </div> <div class="field__item"><p>Similar to HadISST through ~1996; post 1996 no adjustments were made to account for changing satellite sources and/or algorithms employed by NCEP; switches made in 1997, 2004, 2006, 2009 and 2011 may strongly affect the timeseries</p> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> </main> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/layout/layout--twocol-section.html.twig' --> Tue, 24 Jul 2012 14:23:00 +0000 ryanj 833 at https://climatedataguide.ucar.edu Sea Ice Concentration data from NASA Goddard and NSIDC based on Bootstrap algorithm https://climatedataguide.ucar.edu/climate-data/sea-ice-concentration-data-nasa-goddard-and-nsidc-based-bootstrap-algorithm <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--title.html.twig * field--node--title--rss.html.twig * field--node--climate-dataset--title.html.twig * field--node--title--climate-dataset.html.twig x field--node--title.html.twig * field--node--climate-dataset.html.twig * field--title.html.twig * field--string.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <span class="field field--name-title field--type-string field--label-hidden">Sea Ice Concentration data from NASA Goddard and NSIDC based on Bootstrap algorithm</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--uid.html.twig * field--node--uid--rss.html.twig * field--node--climate-dataset--uid.html.twig * field--node--uid--climate-dataset.html.twig x field--node--uid.html.twig * field--node--climate-dataset.html.twig * field--uid.html.twig * field--entity-reference.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--uid.html.twig' --> <span class="field field--name-uid field--type-entity-reference field--label-hidden"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'username' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/user/username.html.twig' --> <span lang="" about="/user/2" typeof="schema:Person" property="schema:name" datatype="">ryanj</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/user/username.html.twig' --> </span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--uid.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--created.html.twig * field--node--created--rss.html.twig * field--node--climate-dataset--created.html.twig * field--node--created--climate-dataset.html.twig x field--node--created.html.twig * field--node--climate-dataset.html.twig * field--created.html.twig * field--created.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--created.html.twig' --> <span class="field field--name-created field--type-created field--label-hidden">Tue, 07/24/2012 - 08:20</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--created.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'layout__twocol_section' --> <!-- FILE NAME SUGGESTIONS: x layout--twocol-section.html.twig x layout--twocol-section.html.twig * layout.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/layout/layout--twocol-section.html.twig' --> <div> <div class="layout__region layout__region--main-top breadcrumb-wrapper mt-2"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--system-breadcrumb-block.html.twig * block--system.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-system block-system-breadcrumb-block"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'breadcrumb' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/navigation/breadcrumb.html.twig' --> <nav class="mb-2 d-print-none" role="navigation" aria-labelledby="system-breadcrumb"> <h2 id="system-breadcrumb" class="visually-hidden">Breadcrumb</h2> <ol class="breadcrumb"> <li class="breadcrumb-item"> <a href="/">Home</a> </li> <li class="breadcrumb-item"> <a href="/domains/sh-southern-hemisphere">SH - Southern Hemisphere</a> </li> </ol> </nav> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/navigation/breadcrumb.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> </div> <main class="layout__region layout__region--main main-content-wrapper"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-primary-image.html.twig * block--field-block--node--climate-dataset--field-primary-image.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-primary-image"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-primary-image.html.twig * field--node--field-primary-image---custom.html.twig * field--node--climate-dataset--field-primary-image.html.twig * field--node--field-primary-image--climate-dataset--default.html.twig * field--node--field-primary-image--climate-dataset.html.twig * field--node--field-primary-image.html.twig * field--node--climate-dataset.html.twig * field--field-primary-image.html.twig * field--entity-reference.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-primary-image field--type-entity-reference field--label-visually_hidden"> <div class="field__label visually-hidden">Teaser image</div> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image_formatter' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image-formatter.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image.html.twig' --> <img src="/sites/default/files/2022-03/teaser_images_600.png" width="797" height="943" alt="Sea Ice Concentration data from NASA Goddard and NSIDC based on Bootstrap algorithm" loading="lazy" typeof="foaf:Image" class="img-fluid" /> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image.html.twig' --> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image-formatter.html.twig' --> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: x block--field-block--field-main-content.html.twig * block--field-block--node--climate-dataset--field-main-content.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig * block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block--field-block--field-main-content.html.twig' --> <div class="mt-3 mt-md-4 block block-layout-builder block-field-blocknodeclimate-datasetfield-main-content"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-main-content.html.twig * field--node--field-main-content---custom.html.twig * field--node--climate-dataset--field-main-content.html.twig * field--node--field-main-content--climate-dataset--default.html.twig * field--node--field-main-content--climate-dataset.html.twig * field--node--field-main-content.html.twig * field--node--climate-dataset.html.twig * field--field-main-content.html.twig * field--entity-reference-revisions.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-main-content field--type-entity-reference-revisions field--label-visually_hidden"> <div class="field__label visually-hidden">Main content</div> <div class="field__items"> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'paragraph' --> <!-- FILE NAME SUGGESTIONS: * paragraph--climate-dataset--rich-text.html.twig * paragraph--rich-text--.html.twig * paragraph--rich-text--default.html.twig * paragraph--rich-text.html.twig * paragraph--default.html.twig x paragraph.html.twig --> <!-- BEGIN OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> <div class="paragraph paragraph--type--rich-text paragraph--view-mode--default"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--paragraph--field-body--default--climate-dataset.html.twig * field--rich-text--default--field-body.html.twig * field--paragraph--field-body--default.html.twig * field--paragraph--rich-text--field-body.html.twig * field--paragraph--field-body--rich-text.html.twig * field--paragraph--field-body.html.twig * field--paragraph--rich-text.html.twig * field--field-body.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-body field--type-text-long field--label-hidden field__item"><p>Bootstrap sea ice refers to a well-known algorithm used to estimate sea ice concentration from passive microwave brightness temperatures. It can be applied to data from many satellite instruments, such as SMMR, SSMI, and AMSR-E. This page discusses the algorithm itself and the long-term data set ("NSIDC 0079, version 2") produced by J. Comiso and distributed by NSIDC. The latest version of the Bootstrap data set has been completely reprocessed so that SMMR and SSMI data are inter-calibrated with AMSR-E data. The Bootstrap data set provides a long-term, consistently interpreted and calibrated record for studies of climate variability and change, but users should be aware of uncertainties and possible biases.</p> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block--field-block--field-main-content.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-key-strengths.html.twig * block--field-block--node--climate-dataset--field-key-strengths.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-key-strengths"> <h2 class="mb-md-2">Key Strengths</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-key-strengths.html.twig * field--node--field-key-strengths---custom.html.twig * field--node--climate-dataset--field-key-strengths.html.twig * field--node--field-key-strengths--climate-dataset--default.html.twig * field--node--field-key-strengths--climate-dataset.html.twig * field--node--field-key-strengths.html.twig * field--node--climate-dataset.html.twig * field--field-key-strengths.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-key-strengths field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Key Strengths</div> <div class="field__items"> <div class="field__item"><p>Long-term (1978-almost present) record</p> </div> <div class="field__item"><p>Consistent algorithm through time</p> </div> <div class="field__item"><p>SMMR and SSMI concentrations are inter-calibrated to AMSR-E using varying tie points to account for changes in signatures of ice and open water due to changes in satellite instruments and platforms, or to physical effects</p> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-key-limitations.html.twig * block--field-block--node--climate-dataset--field-key-limitations.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-key-limitations"> <h2 class="mb-md-2">Key Limitations</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-key-limitations.html.twig * field--node--field-key-limitations---custom.html.twig * field--node--climate-dataset--field-key-limitations.html.twig * field--node--field-key-limitations--climate-dataset--default.html.twig * field--node--field-key-limitations--climate-dataset.html.twig * field--node--field-key-limitations.html.twig * field--node--climate-dataset.html.twig * field--field-key-limitations.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-key-limitations field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Key Limitations</div> <div class="field__items"> <div class="field__item"><p>Influenced by temperature variability; very low temperatures can lead to underestimates</p> </div> <div class="field__item"><p>Underestimates concentration in cases of melt ponding</p> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> </main> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/layout/layout--twocol-section.html.twig' --> Tue, 24 Jul 2012 14:20:00 +0000 ryanj 832 at https://climatedataguide.ucar.edu Sea Ice Concentration data from NASA Goddard and NSIDC based on NASA Team algorithm https://climatedataguide.ucar.edu/climate-data/sea-ice-concentration-data-nasa-goddard-and-nsidc-based-nasa-team-algorithm <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--title.html.twig * field--node--title--rss.html.twig * field--node--climate-dataset--title.html.twig * field--node--title--climate-dataset.html.twig x field--node--title.html.twig * field--node--climate-dataset.html.twig * field--title.html.twig * field--string.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <span class="field field--name-title field--type-string field--label-hidden">Sea Ice Concentration data from NASA Goddard and NSIDC based on NASA Team algorithm</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--uid.html.twig * field--node--uid--rss.html.twig * field--node--climate-dataset--uid.html.twig * field--node--uid--climate-dataset.html.twig x field--node--uid.html.twig * field--node--climate-dataset.html.twig * field--uid.html.twig * field--entity-reference.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--uid.html.twig' --> <span class="field field--name-uid field--type-entity-reference field--label-hidden"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'username' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/user/username.html.twig' --> <span lang="" about="/user/2" typeof="schema:Person" property="schema:name" datatype="">ryanj</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/user/username.html.twig' --> </span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--uid.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--created.html.twig * field--node--created--rss.html.twig * field--node--climate-dataset--created.html.twig * field--node--created--climate-dataset.html.twig x field--node--created.html.twig * field--node--climate-dataset.html.twig * field--created.html.twig * field--created.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--created.html.twig' --> <span class="field field--name-created field--type-created field--label-hidden">Tue, 07/24/2012 - 08:18</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--created.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'layout__twocol_section' --> <!-- FILE NAME SUGGESTIONS: x layout--twocol-section.html.twig x layout--twocol-section.html.twig * layout.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/layout/layout--twocol-section.html.twig' --> <div> <div class="layout__region layout__region--main-top breadcrumb-wrapper mt-2"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--system-breadcrumb-block.html.twig * block--system.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-system block-system-breadcrumb-block"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'breadcrumb' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/navigation/breadcrumb.html.twig' --> <nav class="mb-2 d-print-none" role="navigation" aria-labelledby="system-breadcrumb"> <h2 id="system-breadcrumb" class="visually-hidden">Breadcrumb</h2> <ol class="breadcrumb"> <li class="breadcrumb-item"> <a href="/">Home</a> </li> <li class="breadcrumb-item"> <a href="/domains/sh-southern-hemisphere">SH - Southern Hemisphere</a> </li> </ol> </nav> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/navigation/breadcrumb.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> </div> <main class="layout__region layout__region--main main-content-wrapper"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-primary-image.html.twig * block--field-block--node--climate-dataset--field-primary-image.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-primary-image"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-primary-image.html.twig * field--node--field-primary-image---custom.html.twig * field--node--climate-dataset--field-primary-image.html.twig * field--node--field-primary-image--climate-dataset--default.html.twig * field--node--field-primary-image--climate-dataset.html.twig * field--node--field-primary-image.html.twig * field--node--climate-dataset.html.twig * field--field-primary-image.html.twig * field--entity-reference.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-primary-image field--type-entity-reference field--label-visually_hidden"> <div class="field__label visually-hidden">Teaser image</div> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image_formatter' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image-formatter.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image.html.twig' --> <img src="/sites/default/files/2022-03/teaser_images_601.png" width="797" height="937" alt="Sea Ice Concentration data from NASA Goddard and NSIDC based on NASA Team algorithm" loading="lazy" typeof="foaf:Image" class="img-fluid" /> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image.html.twig' --> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image-formatter.html.twig' --> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: x block--field-block--field-main-content.html.twig * block--field-block--node--climate-dataset--field-main-content.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig * block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block--field-block--field-main-content.html.twig' --> <div class="mt-3 mt-md-4 block block-layout-builder block-field-blocknodeclimate-datasetfield-main-content"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-main-content.html.twig * field--node--field-main-content---custom.html.twig * field--node--climate-dataset--field-main-content.html.twig * field--node--field-main-content--climate-dataset--default.html.twig * field--node--field-main-content--climate-dataset.html.twig * field--node--field-main-content.html.twig * field--node--climate-dataset.html.twig * field--field-main-content.html.twig * field--entity-reference-revisions.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-main-content field--type-entity-reference-revisions field--label-visually_hidden"> <div class="field__label visually-hidden">Main content</div> <div class="field__items"> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'paragraph' --> <!-- FILE NAME SUGGESTIONS: * paragraph--climate-dataset--rich-text.html.twig * paragraph--rich-text--.html.twig * paragraph--rich-text--default.html.twig * paragraph--rich-text.html.twig * paragraph--default.html.twig x paragraph.html.twig --> <!-- BEGIN OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> <div class="paragraph paragraph--type--rich-text paragraph--view-mode--default"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--paragraph--field-body--default--climate-dataset.html.twig * field--rich-text--default--field-body.html.twig * field--paragraph--field-body--default.html.twig * field--paragraph--rich-text--field-body.html.twig * field--paragraph--field-body--rich-text.html.twig * field--paragraph--field-body.html.twig * field--paragraph--rich-text.html.twig * field--field-body.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-body field--type-text-long field--label-hidden field__item"><p>NASA Team sea ice refers to a well-known algorithm used to estimate sea ice concentration from passive microwave brightness temperatures. This page discusses the algorithm itself and the long-term data set ("NSIDC 0051") produced by scientists at NASA Goddard and distributed by NSIDC. The NASA Team data are very widely used and are a key input into other data sets including NSIDC's Sea Ice Index, NSIDC's Near-Real-Time ice concentrations (NISE1 &amp; NSIDC 0081), HadiSST, and NOAA OI. Therefore, users should be aware of the strengths and limitations of the algorithm and the data sets derived from it. Low-biased sea ice concentrations are especially apparent in the Antarctic winter, due in part to the scattering and reflectivity of layers of snow on top of sea ice. Relatively low concentrations are also often apparent in the Arctic, affecting calculations of ice area. A "NASA Team 2" (NT2) algorithm has been developed to address some of the weaknesses of the NASA Team algorithm. However, NASA Team is used for the longest data sets as NT2 depends on the 85GHz channel that was not available on the SMMR (1978-1987).</p> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block--field-block--field-main-content.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-key-strengths.html.twig * block--field-block--node--climate-dataset--field-key-strengths.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-key-strengths"> <h2 class="mb-md-2">Key Strengths</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-key-strengths.html.twig * field--node--field-key-strengths---custom.html.twig * field--node--climate-dataset--field-key-strengths.html.twig * field--node--field-key-strengths--climate-dataset--default.html.twig * field--node--field-key-strengths--climate-dataset.html.twig * field--node--field-key-strengths.html.twig * field--node--climate-dataset.html.twig * field--field-key-strengths.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-key-strengths field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Key Strengths</div> <div class="field__items"> <div class="field__item"><p>Long-term record (1979- almost present)</p> </div> <div class="field__item"><p>Consistent algorithm through time</p> </div> <div class="field__item"><p>Effects of surface temperature variations tend to cancel out due to use of brightness temperature ratios</p> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-key-limitations.html.twig * block--field-block--node--climate-dataset--field-key-limitations.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-key-limitations"> <h2 class="mb-md-2">Key Limitations</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-key-limitations.html.twig * field--node--field-key-limitations---custom.html.twig * field--node--climate-dataset--field-key-limitations.html.twig * field--node--field-key-limitations--climate-dataset--default.html.twig * field--node--field-key-limitations--climate-dataset.html.twig * field--node--field-key-limitations.html.twig * field--node--climate-dataset.html.twig * field--field-key-limitations.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-key-limitations field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Key Limitations</div> <div class="field__items"> <div class="field__item"><p>Tends to under-estimate sea ice concentration compared to ship- and ground- based observations and other algorithms, especially in the Antarctic</p> </div> <div class="field__item"><p>Weather, snow and ice layering effects may not be fully removed (see Anderson et al., 2007)</p> </div> <div class="field__item"><p>Underestimates thin ice and ice with melting or refreezing. Can interpret melt ponds as open water.</p> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> </main> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/layout/layout--twocol-section.html.twig' --> Tue, 24 Jul 2012 14:18:00 +0000 ryanj 831 at https://climatedataguide.ucar.edu Sea Ice Concentration data from HadISST https://climatedataguide.ucar.edu/climate-data/sea-ice-concentration-data-hadisst <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--title.html.twig * field--node--title--rss.html.twig * field--node--climate-dataset--title.html.twig * field--node--title--climate-dataset.html.twig x field--node--title.html.twig * field--node--climate-dataset.html.twig * field--title.html.twig * field--string.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <span class="field field--name-title field--type-string field--label-hidden">Sea Ice Concentration data from HadISST</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--title.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--uid.html.twig * field--node--uid--rss.html.twig * field--node--climate-dataset--uid.html.twig * field--node--uid--climate-dataset.html.twig x field--node--uid.html.twig * field--node--climate-dataset.html.twig * field--uid.html.twig * field--entity-reference.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--uid.html.twig' --> <span class="field field--name-uid field--type-entity-reference field--label-hidden"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'username' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/user/username.html.twig' --> <span lang="" about="/user/2" typeof="schema:Person" property="schema:name" datatype="">ryanj</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/user/username.html.twig' --> </span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--uid.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset--rss--created.html.twig * field--node--created--rss.html.twig * field--node--climate-dataset--created.html.twig * field--node--created--climate-dataset.html.twig x field--node--created.html.twig * field--node--climate-dataset.html.twig * field--created.html.twig * field--created.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--created.html.twig' --> <span class="field field--name-created field--type-created field--label-hidden">Tue, 07/24/2012 - 08:12</span> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--node--created.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'layout__twocol_section' --> <!-- FILE NAME SUGGESTIONS: x layout--twocol-section.html.twig x layout--twocol-section.html.twig * layout.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/layout/layout--twocol-section.html.twig' --> <div> <div class="layout__region layout__region--main-top breadcrumb-wrapper mt-2"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--system-breadcrumb-block.html.twig * block--system.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-system block-system-breadcrumb-block"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'breadcrumb' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/navigation/breadcrumb.html.twig' --> <nav class="mb-2 d-print-none" role="navigation" aria-labelledby="system-breadcrumb"> <h2 id="system-breadcrumb" class="visually-hidden">Breadcrumb</h2> <ol class="breadcrumb"> <li class="breadcrumb-item"> <a href="/">Home</a> </li> <li class="breadcrumb-item"> <a href="/domains/sh-southern-hemisphere">SH - Southern Hemisphere</a> </li> </ol> </nav> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/navigation/breadcrumb.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> </div> <main class="layout__region layout__region--main main-content-wrapper"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-primary-image.html.twig * block--field-block--node--climate-dataset--field-primary-image.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-primary-image"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-primary-image.html.twig * field--node--field-primary-image---custom.html.twig * field--node--climate-dataset--field-primary-image.html.twig * field--node--field-primary-image--climate-dataset--default.html.twig * field--node--field-primary-image--climate-dataset.html.twig * field--node--field-primary-image.html.twig * field--node--climate-dataset.html.twig * field--field-primary-image.html.twig * field--entity-reference.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-primary-image field--type-entity-reference field--label-visually_hidden"> <div class="field__label visually-hidden">Teaser image</div> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image_formatter' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image-formatter.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'image' --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image.html.twig' --> <img src="/sites/default/files/2022-03/teaser_images_602.png" width="797" height="937" alt="Sea Ice Concentration data from HadISST" loading="lazy" typeof="foaf:Image" class="img-fluid" /> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image.html.twig' --> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/image-formatter.html.twig' --> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: x block--field-block--field-main-content.html.twig * block--field-block--node--climate-dataset--field-main-content.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig * block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block--field-block--field-main-content.html.twig' --> <div class="mt-3 mt-md-4 block block-layout-builder block-field-blocknodeclimate-datasetfield-main-content"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-main-content.html.twig * field--node--field-main-content---custom.html.twig * field--node--climate-dataset--field-main-content.html.twig * field--node--field-main-content--climate-dataset--default.html.twig * field--node--field-main-content--climate-dataset.html.twig * field--node--field-main-content.html.twig * field--node--climate-dataset.html.twig * field--field-main-content.html.twig * field--entity-reference-revisions.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> <div class="field field--name-field-main-content field--type-entity-reference-revisions field--label-visually_hidden"> <div class="field__label visually-hidden">Main content</div> <div class="field__items"> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'paragraph' --> <!-- FILE NAME SUGGESTIONS: * paragraph--climate-dataset--rich-text.html.twig * paragraph--rich-text--.html.twig * paragraph--rich-text--default.html.twig * paragraph--rich-text.html.twig * paragraph--default.html.twig x paragraph.html.twig --> <!-- BEGIN OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> <div class="paragraph paragraph--type--rich-text paragraph--view-mode--default"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--paragraph--field-body--default--climate-dataset.html.twig * field--rich-text--default--field-body.html.twig * field--paragraph--field-body--default.html.twig * field--paragraph--rich-text--field-body.html.twig * field--paragraph--field-body--rich-text.html.twig * field--paragraph--field-body.html.twig * field--paragraph--rich-text.html.twig * field--field-body.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-body field--type-text-long field--label-hidden field__item"><p>Spanning 1871-present at monthly timesteps, HadISST provides the longest gridded sea ice data available for both the Arctic and Antarctic. It is a 1° x 1° spatially infilled data set that is It is intended as a consistent analyses for input into SST analyses or as boundary conditions for models. Version 1.1 is the currently available data set and is the one described here. HadISST combines data from historical ice charts from shipping, expeditions and other activities, passive microwave satellite retrievals (primarily the NASA Goddard NASA Team data set), and NCEP operational ice analyses (also based on NASA Team and NASA Team 2 algorithms). A major update of HadISST is planned and this page will be updated when pertinent information is available. The Climate Data Guide will have a separate page discussing the SST portion of HadISST.</p> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'modules/composer/paragraphs/templates/paragraph.html.twig' --> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block--field-block--field-main-content.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-key-strengths.html.twig * block--field-block--node--climate-dataset--field-key-strengths.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-key-strengths"> <h2 class="mb-md-2">Key Strengths</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-key-strengths.html.twig * field--node--field-key-strengths---custom.html.twig * field--node--climate-dataset--field-key-strengths.html.twig * field--node--field-key-strengths--climate-dataset--default.html.twig * field--node--field-key-strengths--climate-dataset.html.twig * field--node--field-key-strengths.html.twig * field--node--climate-dataset.html.twig * field--field-key-strengths.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-key-strengths field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Key Strengths</div> <div class="field__items"> <div class="field__item"><p>Combines many data sources into a long-term, continuous and spatially complete gridded sea ice data set</p> </div> <div class="field__item"><p>updated regularly</p> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'block' --> <!-- FILE NAME SUGGESTIONS: * block--field-block--field-key-limitations.html.twig * block--field-block--node--climate-dataset--field-key-limitations.html.twig * block--field-block--node--climate-dataset.html.twig * block--field-block--node.html.twig * block--field-block.html.twig * block--layout-builder.html.twig x block.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> <div class="block block-layout-builder block-field-blocknodeclimate-datasetfield-key-limitations"> <h2 class="mb-md-2">Key Limitations</h2> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--climate-dataset---custom--field-key-limitations.html.twig * field--node--field-key-limitations---custom.html.twig * field--node--climate-dataset--field-key-limitations.html.twig * field--node--field-key-limitations--climate-dataset--default.html.twig * field--node--field-key-limitations--climate-dataset.html.twig * field--node--field-key-limitations.html.twig * field--node--climate-dataset.html.twig * field--field-key-limitations.html.twig x field--text-long.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> <div class="clearfix text-formatted field field--name-field-key-limitations field--type-text-long field--label-visually_hidden"> <div class="field__label visually-hidden">Key Limitations</div> <div class="field__items"> <div class="field__item"><p>The effect of the many data sources on the continuity of the timeseries is difficult to track and assess. Many obvious non-climatic breaks in the record exist, especially in the Southern Hemisphere</p> </div> <div class="field__item"><p>Shares weaknesses with source data, e.g. NASA Team, Chapman and Walsh NH sea ice, sparse SH pre-satellite observations</p> </div> <div class="field__item"><p>Higher resolution and more homogenous (single algorithm) data are available for the modern satellite period, 1979-present.</p> </div> </div> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/field/field--text-long.html.twig' --> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/block/block.html.twig' --> </main> </div> <!-- END OUTPUT from 'profiles/composer/unity-profile/themes/unity/templates/layout/layout--twocol-section.html.twig' --> Tue, 24 Jul 2012 14:12:00 +0000 ryanj 830 at https://climatedataguide.ucar.edu