Re: gribtonc and gaussian grids

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On Thu, 19 Jul 2001, Joerg Wegner wrote:


Hi,
after installing all the necessary stuff to run gribtonc, I believe that it 
would be able
to run, ah yes, if  I would be able to feed it with a correct .cdl file. We 
have cmip data files
in t42 resolution ( 128x64  gridpoints) that is not a regular but a gaussian 
grid. Is there
someone with experience in converting such files? Is it in general possible to 
do so?
Thanks for help
Joerg



Joerg,

I would start by inspecting all the current cdl files, find the one the
most matches your data.  Then I would run gribtonc in verbose mode and
make the output come to the screen. This will show the variable names that gribtonc is expecting. Using this information I would update 
the cdl until no more messages.  I know this is a trial and error method
but once one does this process a couple of runs it's works out fast. To
run gribtonc from the command line in verbose mode:

% gribtonc -vl - your.cdl your.nc < <rawdata file>

One can also look at the raw data with utility:

% gribdump <rawdata file>

Robb...




Max Planck Institut fuer Meteorologie
Bundesstrasse 55
20146 Hamburg
Telefon:  49 - (0)40 41173 178
Telefax:  49 - (0)40 41173 400
email: wegner@xxxxxxx



==============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
rkambic@xxxxxxxxxxxxxxxx                   WWW: http://www.unidata.ucar.edu/
==============================================================================
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