NCAR Climate Data Guide Content with Tag: Overview / Comparison page

Atmospheric Reanalysis: Overview & Comparison Tables
Reanalysis a systematic approach to produce data sets for climate monitoring and research. Reanalyses are created via an unchanging ("frozen") data assimilation scheme and model(s) which ingest all available observations every 6-12 hours over the period being analyzed. This unchanging framework...
Main variables and Earth System components:
Cloud Dataset Overview
Clouds cover a significant portion of the earth's surface. They are important components of the cliimate's water and energy budgets. Historically, cloud reports have come from station or ship observations. This limited use of these observations for climate studies. However, since the satellite era...
Change of surface temperatures in 5 global data sets. credit: NCAR, climatedataguide
Global Temperature Data Sets: Overview & Comparison Table
Years of Record: 1850/01 to 2013/10
Global surface temperature data sets are an essential resource for monitoring and understanding climate variability and climate change. The most commonly used data sets combine historical observations of near surface air temperatures at land stations with global data sets of sea surface...
Main variables and Earth System components:
Formats: netCDF | ascii | binary Timestep: Climatology,Monthly Domain: Global
Overview: Carbon Dioxide (CO2) Data Sets
Years of Record: 1958/01 to 2012/09
Directly measured and continuous records of atmospheric carbon dioxide (CO2) extend back to 1958. CO2 has also been measured in ancient air samples trapped in ice cores, and these records extend back hundreds of thousands of years. More recently, CO2 is being sampled by satellites providing global...
Main variables and Earth System components:
Formats: ascii Timestep: Daily,Monthly,Annual
Overview: Climate Indices
A climate index is a simple diagnostic quantity that is used to characterize an aspect of a geophysical system such as a circulation pattern. A variety of methods have been used to derive assorted indices. Classically, selected station, grid point or regional average data have been used (eg.,...
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Precipitation Data Sets: Overview & Comparison table
Precipitation (rain, snow, hail, ...) is one of the key components of the hydrological cycle. Its societal importance cannot be over stated. For climate research, precipitation is one of the key terms for balancing the energy budget, and one of the most challenging aspects of climate modeling....
Main variables and Earth System components:
Arctic sea ice climatologies for September
Sea Ice Concentration data: Overview, Comparison table and graphs
Sea ice concentration is both an indicator and driver of high-latitude climate change with strong societal and ecological importance. It is a key boundary condition for atmospheric models (including those used in atmospheric reanalyses) and a benchmark for coupled climate models. As such, numerous...
Main variables and Earth System components:
Domain: Antarctic, Arctic
Arctic sea ice volume anomalies from PIOMASS
Sea Ice Thickness Data Sets: Overview & Comparison Table
While satellite observations of sea ice extent and concentration are available from 1979, long-term high quality (daily and high spatial resolution) observations of sea ice thickness remain limited as a result of few satellite and in situ observations. Reconstructions using numerous observational...
Main variables and Earth System components:
Formats: netCDF | ascii | binary Timestep: Daily,Monthly,Weekly,Irregular Domain: Antarctic, Arctic
SST Data Sets: Overview & Comparison Table
Years of Record: 1850/01 to 2014/04
Sea surface temperature (SST) data sets are an essential resource for monitoring and understanding climate variability and climate change.  By surface area, SSTs are the dominant (~71%) input into merged global land-ocean surface temperature data products.   Historically, SST measurments...
Main variables and Earth System components:
Timestep: Climatology,Daily,Monthly,Weekly Domain: Global
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