Therefore it doesn't allow an easy mapping of the meaning across the two versions. First of all the new designed GRIB2 is in some points semantically different from GRIB1. The conversion algorithm should be easy to implement, but there are some factors making it challenging. Since the new GRIB2 format is going to replace GRIB1 we will focus more on the GRIB1 to GRIB2 conversion rather than the opposite, which sometimes is not possible. ![]() ![]() Conversely the conversion from GRIB2 to GRIB1 is not always lossless because the edition 2 format has been extended to allow a wider set of scientific fields to be coded. The conversion from GRIB edition 1 (GRIB1) to edition 2 (GRIB2) is a format translation without any loss of information. Although the information content of two messages in different editions is almost the same, their binary format is very different and organised in a different way. ![]() GRIB messages are at the moment exchanged in edition 1 or 2.
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