Our Meteorological Archival and Retrieval System (MARS) enables you to explore and retrieve meteorological data in GRIB or NetCDF format using:

1. ECMWF computers
2. The Web API service (using supported Python client software)
3. Web interfaces where you can explore data, configure your data request, check availability and size, generate download request scripts, and download the data in GRIB/NetCDF*
   • ECMWF - MARS Catalogue 🔒
   • ECMWF - Archive Catalogue
   • ECMWF - Public Data Portal
   • Copernicus - Climate Data Store
   • Copernicus - Atmosphere Data Store

When making requests for archive data you can check progress of your data request using the following web interfaces:

• MARS server activity
• My WEB API activity 🔒
• All Web API activity 🔒

We also provide user documentation, training, support, and various tools and links to help you make best use of our data.

*Access to the data portals and their features depends on who you are.