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         MISSION / VISION    |    About EMC

GLOBAL FORECAST SYSTEM
DESCRIPTION:
The command copygb copies all or part of one GRIB file to another
GRIB file, interpolating if necessary.
copygb can be found at:
/nwprod/util/exec/copygb
Documentation is in:
/nwprod/util/sorc/copygb.fd/copygb.doc
The NCEP grids for the -g option are listed in:
http://www.nco.ncep.noaa.gov/pmb/docs/on388/tableb.html
Documentation for the interpolation options are covered in:
/nwprod/lib/sorc/ip/iplib.doc (though some parts may be outdated).
There's also web doc for each routine at:
http://www.nco.ncep.noaa.gov/pmb/docs/libs/iplib/ncep_iplib.shtml
but the info needed for copygb is more readily available in the simple text file /nwprod/lib/sorc/ip/iplib.doc.
If you want to dig into any "w3" subroutines referenced, they generally have good docblocks in their source code. The directory is:
/nwprod/lib/sorc/w3
and a there's a web doc at:
http://www.nco.ncep.noaa.gov/pmb/docs/libs/w3lib/ncep_w3lib.shtml