Reanalysed Climate Variables (1950 – present)

What this dataset is

An analysis-ready, cloud-optimised mirror of the ECMWF ERA5 reanalysis, covering 40 of the most commonly requested climate variables on a 0.25° global grid at hourly resolution, from January 1950 to now.

Variables include surface and 2-metre air temperature, total precipitation, surface pressure, 10-metre and 100-metre wind components, surface solar radiation, sea-surface temperature, dewpoint, snow depth and cover, soil moisture and soil temperature at four depths, and many more.

What you get

• A single Zarr store per variable, sharded for fast spatial and temporal queries.
• An equivalent NetCDF mirror, one file per month per variable, for users who prefer file-based workflows.
• An xarray-friendly catalogue that lets you open the entire archive with one line of code.

Typical uses

• Long-term climate trend analysis.
• Training and validating weather and climate models.
• Resource assessment for solar and wind energy.
• Inputs to hydrological, agricultural and ecological models.

Notes

For sub-daily resolution at higher spatial detail, see the regional reanalysis datasets in the climate category.

Suggested attribution