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20020220: Gempak - gdgsfc question

Greg,

No, the GFUNC syntax does not support listing multiple
parameters separated by ";" like SFPARM. The GFUNC syntax is 
just as in other GEMPAK programs where you can use any grid 
diagnostic to compute a parameter from a set of grids. This
can be a grid that already exists, like p06m, or one that
you are computing, like frontogenesis. GFUNC does not
do multiple grid diagnostics at one.

Steve Chiswell
Unidata User Support




>From: "Gahrs, Greg" <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200202201522.g1KFMIx09404

>Is it possible to interpolate multiple parameters from a grid file and 
>write to a surface file using gdgsfc?
>
>For instance, I have tried the following, as well as other possibilities 
>to no avail, and I have already created a sfc. file called greg.out 
>creating p06m and gp10.  I can get it to write to the surface file ok 
>when I do one parameter at a time, but I would like to write multiple 
>parameters at once.  Thanks for any suggestions.
>
>Greg   
>
>GDFILE   = 99012912_ngm.gem
>GDATTIM  = all
>GVCORD   = 
>GLEVEL   = 
>GFUNC    = p06m@0%none;hght@1000%pres
>SCALE    = 999
>SFFILE   = greg.out
>SFPARM   = p06m; gp10
>GEMPAK-GDGSFC>run
>[GDGSFC -4]  Cannot find SFPARM "P06M; GP10" in this surface file.
>Parameters requested: GDFILE,GDATTIM,GVCORD,GLEVEL,GFUNC,SCALE,SFFILE,
>SFPARM.
>
>-- 
> --------------------------------------
>| Greg Gahrs, address@hidden       |
>| Geophysical Fluid Dynamics Institute |
>| 18 Keen Building                     |
>| Florida State University             |
>| Tallahassee FL, 32306-4360           |
>| (850) 644-6085                       |
> --------------------------------------
>