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@ecmwf

European Centre for Medium-Range Weather Forecasts

Providing software to work with meteorological data and services

Welcome to ECMWF GitHub!

ECMWF is the European Centre for Medium-Range Weather Forecasts.

Have a look at some of our popular topics:

  • earthkit for weather and climate tools in Python
  • anemoi for developing machine learning weather forecasting models
  • ecflow for workflow management
  • mars for data handling software and services

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  1. earthkit earthkit Public

    Python tools to work with weather and climate data

    Python 180 9

  2. eccodes eccodes Public

    ECMWF's GRIB and BUFR decoding/encoding library

    C++ 246 97

  3. ecmwf-opendata ecmwf-opendata Public

    A package to download ECMWF open data

    Python 290 43

  4. ecflow ecflow Public

    ECMWF's workflow manager

    C++ 56 16

  5. anemoi-core anemoi-core Public

    Core packages for Anemoi.

    Python 103 76

Repositories

Showing 10 of 153 repositories
  • metkit Public

    Toolkit for manipulating and describing meteorological objects, implementing the MARS language and associated processing and semantics.

    ecmwf/metkit’s past year of commit activity
    C++ 6 Apache-2.0 11 1 4 Updated Jan 23, 2026
  • eckit Public

    A C++ toolkit that supports development of tools and applications at ECMWF.

    ecmwf/eckit’s past year of commit activity
    C++ 28 Apache-2.0 27 4 11 Updated Jan 23, 2026
  • WeatherGenerator Public

    The repository of the WeatherGenerator project

    ecmwf/WeatherGenerator’s past year of commit activity
    Python 98 Apache-2.0 51 263 (12 issues need help) 39 Updated Jan 23, 2026
  • anemoi-core Public

    Core packages for Anemoi.

    ecmwf/anemoi-core’s past year of commit activity
    Python 103 Apache-2.0 76 127 (7 issues need help) 37 Updated Jan 23, 2026
  • eccodes Public

    ECMWF's GRIB and BUFR decoding/encoding library

    ecmwf/eccodes’s past year of commit activity
    C++ 246 Apache-2.0 97 2 10 Updated Jan 23, 2026
  • fckit Public

    A Fortran toolkit for interoperating Fortran with C/C++

    ecmwf/fckit’s past year of commit activity
    Fortran 41 Apache-2.0 17 5 4 Updated Jan 23, 2026
  • anemoi-plugins Public

    Plugins for anemoi

    ecmwf/anemoi-plugins’s past year of commit activity
    Python 2 Apache-2.0 2 2 2 Updated Jan 23, 2026
  • anemoi-datasets Public

    Datasets for Machine Learning weather forecasting models

    ecmwf/anemoi-datasets’s past year of commit activity
    Python 60 Apache-2.0 52 66 (1 issue needs help) 11 Updated Jan 23, 2026
  • anemoi-utils Public
    ecmwf/anemoi-utils’s past year of commit activity
    Python 13 Apache-2.0 16 11 5 Updated Jan 23, 2026
  • ecflow Public

    ECMWF's workflow manager

    ecmwf/ecflow’s past year of commit activity
    C++ 56 Apache-2.0 16 11 6 Updated Jan 23, 2026