Comprehensive weather and climate datasets, reanalyses assimilate a variety of observations of the atmosphere, land surface, and ocean into a forecast model to provide a dynamically consistent estimate of the climate state at each time step.
Below is the atmospheric reanalysis overview page, which summarizes the attributes of the major atmospheric reanalyses. This section also includes selected oceanic reanalyses, although an overview is not available yet.
To find a specific reanalysis, jump to the search box below or click your desired reanalysis from among the blue sub-category buttons.
To see only the reanalyses pages accompanied by in-depth commentary, select the "Datasets with guidance" button when using the search box.
Years of record
ERA5, the successor to ERA-Interim, provides global, hourly estimates of atmospheric variables, at a horizontal resolution of 31 km and 137 vertical levels from the surface to 0.01 hPa. Produced by ECMWF, ERA5 presently extends back to 1979; it will ultimately…
Main variables and Earth System componentsAtmosphere
- Sub-daily, Daily, Monthly
- Diagnostic Data Sets
Experts contributing reviews
- Dee, Dick