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[GEMPAK ~DUD-169257]: GDGSFC and Surface Radiation Data



Charles J. Alonge Posted on 20060118.1559 MST
================================================================
Support,

    I've been using gdgsfc to create sfc files in GEMPAK.  Up until now 
I have been plotting multiple traces on top of one another to compare 
radiation fluxes from different model runs to sfc observations.  Is 
there a way to difference to similar parameters from each other in 
different surface files (i.e. similar to setting gdpfun = 
SUB(TMPC+1,TMPC+2) in gdplot2/gdcntr)?  Any assistance you can provide 
me will be greatly appreciated.

Thank You,
Chuck

Charles J. Alonge
Scientific Programmer / Analyst
NASA Goddard Space Flight Center - SAIC
Hydrological Sciences Branch
NASA-GSFC Mail Code 614.3
Greenbelt, MD 20771

Office: Building 22, Room 008
Phone:  (301) 286-8272
Fax:    (301) 286-8624
Email:  address@hidden



Steve Chiswell wrote:

>Charles,
>
>You can use gdgsfc to interpolate your grid to surface station locations
>so that you can plot the model data with sfgram.
>
>Steve Chiswell
>Unidata User Support
>
>
>On Fri, 2005-09-16 at 12:35, Charles J. Alonge wrote:
>  
>
>>Gempak Gurus,
>>
>>  I have downloaded NOAA SURFRAD data and placed them into GEMPAK 
>>surface files using SFCFIL and SFEDIT.  I would like to compare the data 
>>to gridded workstation Eta output.  Is there anyway to overlay time 
>>series from both datasets (SFGRAM/GDTSER)?  Any advice will be greatly 
>>appreciated.
>>
>>Thanks,
>>Charles
>>
>>Setup:
>>Fedore Core 2 Linux - GEMPAK version 5.8.2a
>>    
>>
>
>  
>




Steve Chiswell Posted on 20060118.1701 MST
================================================================
Charles,

No. The surface programs do not have the ability to use the
grid function operators. Only simple operations in the same data set
are supported.

A program could be written to process surface parameters in multiple
files, but that does not generally exist in current programs.

Another possibility would be to do the subtraction within the grid
field first, and then write the new difference field out to a surface file.

Steve Chiswell
Unidata User Support


Steve Chiswell Posted on 20060119.1251 MST
================================================================
reply




Ticket Details
===================
Ticket ID: DUD-169257
Department: Support GEMPAK
Priority: Normal
Status: Closed