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>[fas.eilab.co.kr:/home/gempak/GEMPAK5.9.1/study]> cat 20050709_1000 | dcacars >-v -l - 2005070910_acars.gem >Mar 09 00:36:06 dcacars[31402]: Starting up >Mar 09 00:36:06 dcacars[31402]: MADIS ACARS data >Mar 09 00:36:06 dcacars[31402]: No pressure variable, will calculate >Mar 09 00:36:06 dcacars[31402]: correctedWVMR not present >Mar 09 00:36:06 dcacars[31402]: Warning: Tail number exceeds 8 characters, >will truncate on storage >[IN -11] acars.pack >[DP -7] acars.pack >[SF -1] 2005070910_acars.gem >Mar 09 00:36:07 dcacars[31402]: Could not open gempak file 2005070910_acars.gem >Mar 09 00:36:07 dcacars[31402]: Exiting Yong-moon, The error messages you get above when invoking dcacars is that it cannot locate the acars.pack file whilch is supposed to be in $GEMTBL/pack. This either means that you have not sourced the Gemenviron variables into your environment so that the environmental variable $GEMTBL is defined, or your GEMTBL is not pointing tho the appropriate location. The other warning messages about the pressure variable and WVMR are status messages related to version of CDL that was used to create the netcdf file. Variables included in the NetCDF file have changed over time. The decoder is able to recognize the presence or absence of several variables which may or may not be present in your supplied file. Steve Chiswell Unidata User Support Ticket Details =================== Ticket ID: YHZ-593073 Department: Support GEMPAK Priority: High Status: Closed