[gradsusr] (no subject)

[Jennifer Adams]

On Mar 3, 2011, at 2:13 PM, SMITH, JONATHAN WYNN. (GSFC-6133) wrote:

> Hello,
> I am having trouble opening the globally-merged TRMM IR data files  
> with grads.  I recently downloaded all o f the files for June of  
> 2006 from:  http://mirador.gsfc.nasa.gov/cgi-bin/mirador/presentNavigation.pl?tree=project&dataset=Global-merged%20IR%20Brightness%20Temperature%20Data&project=TRMM&dataGroup=Ancillary&version=001&CGISESSID=559e198c73b9961d223704eaaa07b51a
>
> I am using the script and .ctl file attached.  In the script I  
> desire to plot  TRMM data and then plot lightning from the WWLLN.
> I have carefully checked to see that the files to be opened are in  
> the correct paths:
> I am getting the following errors after running  
> lightning_trmm_00zJune01.gs:
>
> Open Error:  Missing or invalid dimension starting value
>   --> The invalid description file record is:
>   --> TDEF 1000000  LINEAR   02z01June2006 30mn

The error message "Invalid dimension starting value" means it doesn't  
like "02z01June2006". Try removing the final 'e' from 'June' and see  
if that helps. Also, change the number of time steps from 1 million to  
the actual number of time steps you have. GrADS allocates internal  
memory based on the size of your grid, and a TDEF this big is a waste  
of resources and will slow down GrADS on opening the file.
--Jennifer



>
>   The data file was not opened.
> SET Error:  No files open yet
> SET Error:  No files open yet
>
>
> The .ctl is in a format suggested by the following site: http://disc.sci.gsfc.nasa.gov/precipitation/Globally_merged_IR.shtml
> Any suggestions on how to get the grads script to open the files  
> would be great.
> Thanks
> Jonathan
>
> Jonathan Wynn Smith
> Student Trainee, WRF-Chem Modeling and Long-range transport
> jonathan.smith at nasa.gov
> NASA-Goddard Space Flight Center
> Code 613.3-Atmospheric Chemistry and Dynamics Branch
> Greenbelt, MD
> 301-614-5956
>
> Doctoral Candidate
> jw_smith at bison.howard.edu
> Howard University Program in Atmospheric Sciences
> Washington, DC
>
> <lightning_trmm_00zJune01.gs><merg00z_01June.ctl>
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--
Jennifer M. Adams
IGES/COLA
4041 Powder Mill Road, Suite 302
Calverton, MD 20705
jma at cola.iges.org



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