Access to archive datasets

Our Meteorological Archival and Retrieval System (MARS) enables you to list and retrieve meteorological data in GRIB/NetCDF via:

  • the MARS client on ECMWF computers such as ecgate
  • the Web API service (supported Python client software)
  • web interfaces where you can explore the parts of the archive available to you and get the MARS request syntax/scripts to download data on ECMWF computers or via the web API. Members and licence holders can also check availability of the data and estimate the download size.

Access to our data depends on who you are. More information is available on the Access to forecasts pages.