Ratna, This is my second attempt, something went wrong with 1st attempt. Unidata doesn't do any BUFR encoding, but NCEP does. here's an url: http://www.nco.ncep.noaa.gov/sib/decoders/ also here's one for BUFRLIB http://www.nco.ncep.noaa.gov/sib/decoders/BUFRLIB/toc and http://www.emc.ncep.noaa.gov/mmb/data_processing/NCEP_BUFR_File_Structure.htm hope that helps RObb... Ticket Details =================== Ticket ID: DCZ-830103 Department: Support netCDF Decoders Priority: Critical Status: Open