There is a crippled version of IFS (the ECMWF forecast model) which has the data assimilation code removed available [0], thought its licence terms are pretty r

There is a crippled version of IFS (the ECMWF forecast model) which has the data assimilation code removed available [0], thought its licence terms are pretty restrictive for most uses [1] besides pure research (it is, for example, forbidden to use it for personal uses!). [0] https://software.ecmwf.int/wiki/display/OIFS/ https://software.ecmwf.int/wiki/display/OIFS/ [1] https://software.ecmwf.int/wiki/display/OIFS/OpenIFS+Licensing https://software.ecmwf.int/wiki/display/OIFS/OpenIFS+Licensi...