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Hi Art, The decoder worked using the netcdf-4.1.1 library, but your error is with ncgen: ncgen: NetCDF: Not a valid data type or _FillValue type mismatch (genbin.c:121) Usually the ncgen and the ncdump utilities are copied into the ~ldm/util directory, that's where the perl decoders look first. Also the cdl is not correct, int64 gives an error, replace it with the long data type. You can test ncgen from the command line: % ~ldm/util/ncgen -o test.nc metar.cdl.new1 Then use ncdump % ~ldm/util/ncdump test.nc The other errors are from the ncgen bad file creation. I'm going to try the cdl with ncgen version 4.1.2-beta2-snapshot2010101820 and see if the error can be reproduced here. RObb... Ticket Details =================== Ticket ID: MHV-467373 Department: Support netCDF Decoders Priority: Normal Status: Open