CERA-20C: ECMWF's Coupled Ocean-Atmosphere Reanalysis of the 20th Century
Years of Record: 1901/01 to 2010/12
The CERA-20C is a global, coupled reanalysis spanning 1901-2010 with a focus on low-frequency climate variability. Similar to ERA-20C, the surface observations assimilated include surface pressures from the International Surface Pressure Databank v3.2.6 and ICOADS v 2.5.1, and surface winds...
Main variables and Earth System components:
Formats: netCDF | GRIB
Timestep: Sub-daily,Daily,Monthly
Domain: Global
NSIDC Sea Ice Index
Years of Record: 1978/10 to 2020/12
The NSIDC Sea Ice Index is a suite of easy-to-use sea ice analyses to track changes in Arctic and Antarctic sea ice. The product is produced and supported by the NOAA at NSIDC group and consists of browse imagery and data text files (CSV or Excel format). The input data is from two sources...
Main variables and Earth System components:
Formats: ascii | csv | GeoTIFF | Image | shapefile
Timestep: Daily,Monthly
Domain: Antarctic, Arctic
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
SST data: AVHRR Pathfinder v5.2, NOAA NODC
Years of Record: 1981/01 to 2011/12
"The AVHRR Pathfinder Version 5.2 (PFV52) data set was computed using an entirely modernized system, based on SeaDAS and incorporating several key changes over the older Pathfinder V5.0 and V5.1 datasets. PFV52 is viewed as a significant step forward in preparation for the future Version 6 (PFV6)...
Main variables and Earth System components:
Formats: netCDF
Timestep: Sub-daily
Domain: Global
Walsh and Chapman Northern Hemisphere Sea Ice
Years of Record: 1870/01 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