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The conversion from GRIB edition 1 (GRIB1) to edition 2 (GRIB2) is a format translation without any loss of information. 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. Note: Converting to edition 1 is not supported.
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.
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