Breo, I started working on a fix for your Dx/Dy problem, but I ran into another problem. The test files cosmo_lmk_tsfc.grib and cosmo_lme_tsfc.grib have timeRangeValue = 13 (octet 21), according to the 388 documentation Table 5, values 11-50 are reserved, so it's impossible to set the forecastTime. Without the forecastTime the Grib library can't process the files. RObb... Ticket Details =================== Ticket ID: JRS-727215 Department: Support netCDF Java Priority: Critical Status: Open