FM 92 GRIB

The specification of the GRIB code form is contained in WMO Publication 306 Manual on Codes. ECMWF uses GRIB edition 1 with extensions.

Because the ECMWF forecasting system supports many parameters not included in the GRIB code table 2, a local version of this table is used, designated version 128 and reproduced as Table 4.2 (local version 131 is used for forecast probabilities and version 140 for ocean waves prediction products).