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The March 2021 release of our software provides many new features, improvements and fixes!

Table of Contents



ecCodes, the heart of GRIB and BUFR handling, brings new tool features, new CAMS/CARRA/CERRA parameters, support for CEMS Fire products, contributions from users and several smaller features/bug fixes in version 2.21.0.
Please note that ecCodes' Python 2 interface is no longer being developed. Users are strongly advised to migrate to Python 3.
Also the pip package name has changed to 'eccodes'. Please use this command to install the ecCodes Python bindings:


  • Support has been added for NetCDF data coded with int64
  • Improved automatic styling and scaling
  • and few bug fixes for metview.


Metview 5.11.0 brings a number of fixes for performance and stability, including:


Metview is built at ECMWF with all the versions of our libraries listed in the table below, and all are included in the Metview Bundle


CodesUI, ECMWF's standalone examiner for GRIB and BUFR data, adds:

  • for BUFR data, now allows subset navigation from subset value list in info sidebar
  • for BUFR data, the flag table value bits are now shown correctly in the details sidebar

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Some of the new Gallery examples for MetviewMetZoom is the upcoming new visual data analysis tool from Metview


The software versions of this release are available on all ECMWF computer systems as "new" versions. Versions on conda should be available in the coming days. If you encounter any issues please feel free to send feedback to