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19990929: ECMWF data

Brett,

It sounds like you are saying that your data isn't from the IDD.
If thats the case, then the projection may not be defined in dcgrib.
Dcgrib defines what grib grid numbers are subgrids of a larger grid
to use for tiling- so these definitions must be defined internally.

Since nagrib doesn't tile anything, your output file will be the
projection of the first time you encounter.

If you can output the list information for a grib, then I can tell you
if that projection is defined as a tile for dcgrib.

In NAGRIB, set MAXGRID=1, GDOUTF = LIST, and GBDIAG=all.

The grid ids for IDD ECMWF are grids:
ECMWF id 1-4 (NH)
ECMWF id 9-12 (SH)
ECMWF id 5-8 (35N-35S)

The pqact patterns I sent you previously for the IDD use the 8 tiles from
NH & SH for the first action, ans the tropical winds grid 25N-35S for
the second action.

Steve Chiswell
Unidata User Support

>From: Brett Newkirk <address@hidden>
>Organization: .
>Keywords: 199909291817.MAA22900

>Steve:
>       I looked at our pqact.conf file and tried using dcgrib. When I
>decode the data using NAGRIB, everything is fine- the navigation block is
>set correctly and the data are added to the GEMPAK file. When I use
>dcgrib, there is no navigation data in the GEMPAK file and the data are
>not written. I invoke dcgrib with the command:
>dcgrib -g ~ldm/NAWIPS-5.4/gempak5.4/tables 1999ecmwf.gem < E00CC098E.grb
>and when I use NAGRIB, I just let the GDS define the navigaion block.
>
>Is there something that I might be missing when I use dcgrib? I noticed
>that the data we get with the ldm has a different resolution than the data
>I have. Does this make a difference (isn't it defined in the GDS section
>of the GRIB header)? Thanks again-
>Brett
>
>Brett Newkirk    E-MAIL: address@hidden
>Office: ATG 424  Atmospheric Science/Geophysics Building
>Mailing Address: Department of Atmospheric Sciences, University of Washington
>                 Box 351640
>                 Seattle, WA 98195-1640
>Office Phone: (206) 685-2183
>