20051027: gdgrib

Nusrat,
GDGRIB (contributed by the HPC) does not support grib encoding of 
ensemble bytes (41-45) for member names, but you can specify a mapping 
of your parameter to a grib parameter. 
The GBTBLS, VERCEN and PDSVAL parameters are used to specify 
what grib parameter and vertical coordinate is defined by your 
grid. You can convert your TMPF to TMPK and use the PDSVAL for TMPK.

Steve Chiswell
Unidata User Support

>To: address@hidden
>Subject: Please Help!
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>Hi,
>
>We are interested in converting GEMPAK grid file of 15 member NCEP 
>SREF   into GRIB format.  Inside the gempak file are the individual 
>members for several fields from f00 through f87. Each field is labeled 
>with a membership number (1, 3, ....15), for example 2-m temperature 
>from member 3 is tmpf3. I have been trying to use GDGRIB program to do 
>the conversion. But no matter what I try, I get the following error 
>message:
>
>[GDGRIB -83] Cannot find parameter in tables.
>
>Since each field contains a membership number attached to it, is there a 
>way to specify which member to convert.  I am new to GEMPAK software, 
>any help is much appreciated!!
>
>Here are the parameters in GDGRIB:
>------------------------------------------------------------------------------
> -------------- 
>
>
>GDFILE=spcsref_2005102209.gem
>GFUNC=TMPF3
>GDATTIM=f03
>GLEVEL=2
>GVCORD=HGHT
>GBTBLS=
>GBFILE=sref_2005102209.grib
>VERCEN=
>PDSVAL=
>PRECSN=d/4
>WMOHDR=
>CPYFIL=
>PROJ=lcc/25;-95;25
>GRDAREA=12.190;-133.459;57.290;-49.385
>KXKY=185;129
>RUN
>
>------------------------------------------------------------------------------
> ---------------------- 
>
>
>Regards.
>Nusrat
>
>-- 
>Nusrat Yussouf
>Research Associate
>OU CIMMS/NSSL
>1313 Halley Circle
>Norman, OK 73069
>Tel: (405)-366-0551
>
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