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NCAR Climate Data Guide Content with Tag: NH - Northern Hemisphere

AMO index timeseries (contributed by R. Zhang)
Atlantic Multi-decadal Oscillation (AMO)
Years of Record: 1869/12 to 2020/09
The Atlantic Multi-decadal Oscillation (AMO) has been identified as a coherent mode of natural variability occurring in the North Atlantic Ocean with an estimated period of 60-80 years. It is based upon the average anomalies of sea surface temperatures (SST) in the North Atlantic basin, typically...
Main variables and Earth System components:
Formats: netCDF | ascii Timestep: Monthly,Decadal Domain: Atlantic Ocean, NH - Northern Hemisphere
See Expert Guidance by Trenberth, Kevin | See Expert Guidance by Zhang, Rong
Climate Data Guide Image: Snow Water Climatology
Global Monthly EASE-Grid Snow Water Equivalent Climatology: SSMR, SSMI
Years of Record: 1978/11 to 2007/05
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 Northern and Southern 25 km Equal-Area Scalable Earth Grids (EASE-Grids)....
Main variables and Earth System components:
Formats: binary Timestep: Monthly Domain: NH - Northern Hemisphere, SH - Southern Hemisphere
Hurrell wintertime SLP-based Northern Annular Mode (NAM) Index
Years of Record: 1899/01 to 2020/03
The NAM (or Arctic Oscillation) is defined as the first EOF of NH (20°-90°N) winter SLP data. It explains 23% of the extended winter mean (December-March) variance, and it is clearly dominated by the NAO structure in the Atlantic sector. Although there are some subtle differences from the NAO...
Main variables and Earth System components:
Formats: ascii Timestep: Seasonal Domain: Atlantic Ocean, NH - Northern Hemisphere, Pacific Ocean
MEaSUREs Northern Hemisphere Terrestrial Snow Cover Extent Daily 25km EASE-Grid 2.0
Years of Record: 1999/01 to 2012/01
"This data set offers users 25 km Northern Hemisphere snow cover extent represented by four different variables. Three of the snow cover variables are derived from the Interactive Multisensor Snow and Ice Mapping System, MODIS Cloud Gap Filled Snow Cover, and passive microwave brightness...
Main variables and Earth System components:
Formats: netCDF Timestep: Daily Domain: NH - Northern Hemisphere
MEaSUREs: Northern Hemisphere Terrestrial Snow Cover Extent Weekly 100km EASE-Grid 2.0
Years of Record: 1966/10 to 2012/12
"This data set offers users weekly 100 km Northern Hemisphere snow cover extent represented by three different variables. Two of the variables are derived from individual source products: the NOAA/NCDC Northern Hemisphere Snow Cover Extent Climate Data Record and Defense Meteorological Satellite...
Main variables and Earth System components:
Formats: netCDF Timestep: Weekly Domain: NH - Northern Hemisphere
Merged Hadley-NOAA/OI Sea Surface Temperature & Sea-Ice Concentration (Hurrell et al, 2008)
Years of Record: 1869/12 to 2020/08
The merged Hadley-OI sea surface temperature (SST) and sea ice concentration (SIC) data sets were specifically developed as surface forcing data sets for AMIP style uncoupled simulations of the Community Atmosphere Model (CAM). The Hadley Centre's SST/SIC version 1.1 (HADISST1), which is derived...
Main variables and Earth System components:
Formats: netCDF Timestep: Monthly Domain: Global, Antarctic, Arctic, NH - Northern Hemisphere, SH - Southern Hemisphere
NCAR Sea Level Pressure
Years of Record: 1899/01 to 2021/02
NCAR Sea Level Pressure is a gridded analysis of SLP based on land station reports, covering 1899 to present for latitudes 30°N-90°N. Quality controlled raw data plus empirical corrections for changes in instrumentation and station location.
Main variables and Earth System components:
Formats: netCDF | ascii | binary Domain: NH - Northern Hemisphere
See Expert Guidance by Hurrell, James | See Expert Guidance by Trenberth, Kevin
North Pacific (NP) Index by Trenberth and Hurrell; monthly and winter
Years of Record: 1899/01 to 2020/06
The North Pacific Index (NP index or NPI) is the area-weighted sea level pressure over the region 30°N-65°N, 160°E-140°W. The NP index is defined to measure interannual to decadal variations in the atmospheric circulation. The dominant atmosphere-ocean relation in the North Pacific is one where...
Main variables and Earth System components:
Formats: ascii Timestep: Monthly,Seasonal Domain: NH - Northern Hemisphere, Pacific Ocean
See Expert Guidance by Hurrell, James
Permafrost: Circum-Arctic Map of Permafrost and Ground Ice Conditions
The circumpolar permafrost and ground ice data contribute to a unified international data set that depicts the distribution and properties of permafrost and ground ice in the Northern Hemisphere (20°N to 90°N). The re-gridded data set shows discontinuous, sporadic, or isolated permafrost boundaries.
Main variables and Earth System components:
Formats: binary | shapefile Timestep: Climatology Domain: NH - Northern Hemisphere
Sea Ice Concentration data from AMSR-E, AMSR2 & SSMIS, U Bremen and U Hamburg ASI algorithm
Years of Record: 2002/06 to 2011/10
The sea ice data derived from AMSR-E using the ARTIST sea ice (ASI) algorithm offer a factor of 4 finer spatial resolution than most sea ice data sets from passive microwave satellite instruments. ASI is based on the difference of vertically and horizontally polarized brightness temperatures at 89...
Main variables and Earth System components:
Formats: netCDF | HDF | GeoTIFF Timestep: Daily Domain: NH - Northern Hemisphere, SH - Southern Hemisphere, Antarctic, Arctic
Climate Data Guide Image: HADISST ice concentrations
Sea Ice Concentration data from HadISST
Years of Record: 1869/12 to 2020/12
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....
Main variables and Earth System components:
Formats: netCDF | ascii Timestep: Monthly Domain: Antarctic, Arctic, NH - Northern Hemisphere, SH - Southern Hemisphere
Climate Data Guide Image: Sea Ice Concentration data; Goddard Bootstrap
Sea Ice Concentration data from NASA Goddard and NSIDC based on Bootstrap algorithm
Years of Record: 1978/10 to 2014/12
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 ("...
Main variables and Earth System components:
Formats: netCDF | binary Timestep: Daily,Monthly Domain: Antarctic, Arctic, NH - Northern Hemisphere, SH - Southern Hemisphere
Artic sea ice: NASA Team
Sea Ice Concentration data from NASA Goddard and NSIDC based on NASA Team algorithm
Years of Record: 1978/10 to 2014/12
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...
Main variables and Earth System components:
Formats: netCDF | binary Timestep: Daily,Monthly Domain: Antarctic, Arctic, NH - Northern Hemisphere, SH - Southern Hemisphere
Arctic sea ice: NOAA OI
Sea Ice Concentration data from NOAA OI
Years of Record: 1981/10 to 2021/03
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...
Main variables and Earth System components:
Formats: netCDF Timestep: Monthly,Weekly Domain: Antarctic, Arctic, NH - Northern Hemisphere, SH - Southern Hemisphere
Artic sea ice: Eumetsat reprocessed.
Sea Ice Concentration data reprocessed from SSMR & SSMI, by Eumetsat
Years of Record: 1978/10 to 2009/10
The Eumetsat Ocean and Sea Ice Satellite Applications Facility provides a "reprocessed" data set of Arctic and Antarctic sea ice concentration for 1978-2009. Source data are the SMMR and SSM/I passive microwave brightness temperatures. Three algorithms are utilized: the Technical University of...
Main variables and Earth System components:
Formats: netCDF Timestep: Daily Domain: NH - Northern Hemisphere, SH - Southern Hemisphere, Antarctic, Arctic
Arctic sea ice: Climate Data Record
Sea Ice Concentration: NOAA/NSIDC Climate Data Record
Years of Record: 1978/11 to 2019/12
The NOAA/NSIDC Climate Data Record (CDR) of sea ice concentration is available at 25 x 25 km spatial resolution in daily or monthly timesteps for 1987-2014. It provides a consistent interpretation of sea ice for the satellite record, with the intent of being suitable for studies of climate...
Main variables and Earth System components:
Formats: netCDF Timestep: Daily,Monthly Domain: Antarctic, Arctic, NH - Northern Hemisphere, SH - Southern Hemisphere
See Expert Guidance by Meier, Walter
Snow Water Equivalent (AMSR-E)
Years of Record: 2002/06 to 2011/10
The Advanced Microwave Scanning Radiometer-Earth Observing System (AMSR-E) distributes daily, weekly, and monthly products which includes snow water equivalent. Note: "On 04 October 2011, the AMSR-E instrument on board the Aqua satellite stopped producing data due to a problem with the rotation of...
Main variables and Earth System components:
Formats: HDF-EOS Timestep: Daily,Monthly,Weekly Domain: NH - Northern Hemisphere
Surface Solar Radiation Data Set - Heliosat (SARAH) -Edition 1
Years of Record: 1983/01 to 2013/12
"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...
Main variables and Earth System components:
Formats: netCDF Timestep: Sub-daily,Daily,Monthly Domain: Africa, Europe, NH - Northern Hemisphere, SH - Southern Hemisphere
Walsh and Chapman Northern Hemisphere Sea Ice
Years of Record: 1869/12 to 2011/12
The Walsh and Chapman Sea Ice Data Set provides a long record of Arctic sea ice concentrations on a monthly basis for 1870-2011. Historical observations were gridded and combined with satellite-derived sea ice concentrations for the recent decades. Mostly climatologies before the 1950s. The Walsh...
Main variables and Earth System components:
Formats: ascii Timestep: Monthly Domain: NH - Northern Hemisphere, Arctic
See Expert Guidance by Chapman, William
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