Archive datasets

ECMWF's meteorological archive contains petabytes of operational and research data. The Meteorological Archival and Retrieval System (MARS) provides facilities for the retrieval of those data in GRIB or NetCDF fomat.

Public datasets

A number of datasets are made available free of charge, including Global Reanalyses (such as ERA-Interim, and ERA5), multi-model (such as TIGGE), and atmospheric composition (such as CAMS near-real-time).

Licensed datasets

Further datasets are available under an ECMWF license, including the Operational archive. To see what is available:

All datasets

The full archive also contains restricted datasets that are only available to authorised users, including special datasets, projects and research experiments.

  • Browse the full MARS Catalogue
    View the availability of the data, estimate the download size, and get the MARS request syntax needed to download the data using the MARS python client. Also download the data directly, though this is not the recommended method.