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Heiko, As you probably know, each grib file parameter table is designated by center, sub center, and table version number. So i added 88: 0: 128: ecmwf_128.tab 88: -1: 128: ecmwf_128.tab in the resources/grib/tables/tablelookup.lst file before center 98. I used ECMWF table v128 since you said that you were using ECMWF tables. There is a typo in param 52, a missing : needs to be inserted in the ecmwf_128.tab table. cheers, RObb... -------------------------------------------------------------------- Header : GRIB1 Discipline : 0 Meteorological Products GRIB Edition : 1 GRIB length : 15746 Originating Center : 88 Oslo Originating Sub-Center : 0 WMO Secretariat Product Definition : 0 Forecast/Uninitialized Analysis/Image Product Parameter Category : -1 Meteorological Parameters Parameter Name : 8 SRO Surface runoff Parameter Units : m Reference Time : 2007-05-15T23:00:00Z Time Units : hour Time Range Indicator : product valid at RT + P1 Time 1 (P1) : 0 Time 2 (P2) : 0 Generating Process Type : 127 Lake Ice Forecast Model Level Type : 105 fixed height above ground Level Value 1 : 0.0 Level Value 2 : 0.0 GDS Exists : true BMS Exists : true Number of data points : 12321 Grid Name : Polar Stereographic projection Grid Grid Shape: 0 spherical Spherical earth radius: 6367.47 Nx : 111 Ny : 111 La1 : 83.192 Lo1 : -77.0 Resolution & Component flags : 128 Winds : True LoV : -32.0 Dx : 50000.0 Dy : 50000.0 Projection center : 0 Scanning mode : 0 Ticket Details =================== Ticket ID: DGE-160974 Department: Support netCDF Decoders Priority: Normal Status: Open