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20000809: subsecting GEMPAK upper air files using a stn list of stations

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: 20000809: subsecting GEMPAK upper air files using a stn list of stations
  • Date: Wed, 09 Aug 2000 11:29:34 -0600
Darren,

You can use sncfil to create a sounding file with your subsetted table
and set the number of additional stations in TIMSTN to be zero.
The using snmod, move all stations.  This should allow you to
get all the data for the stations in the table, while omitting those that
aren't.

Steve Chiswell



>From: Darren Gallant <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200008091634.e79GYRT25111

>  This message is in MIME format.  The first part should be readable text,
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>  Send mail to address@hidden for more info.
>
>---559023410-959030623-965838973=:5632
>Content-Type: TEXT/PLAIN; charset=US-ASCII
>
>Dear Unidata support,
>
>Is there a way I can create a GEMPAK sounding file consisting of only
>selected South American,Central American, and Mexican upper air sites?
>
>I have a list of the stations I want extracted from snworld.tbl. Can I use
>this list to subsect a GEMPAK sounding file? 
>
>I attempted to subsect using snmod, but I can only add one country's
>sounding data per one run. Is there a way to add more countries and or 
>station numbers at once?
>
>Thanks
>
>Darren R. Gallant              UCAR/JOSS
>Programmer/Technician           Joint OfFice Of Science Support
>303-497-2634                    P.O. Box 3000
>address@hidden                Boulder,CO 80307-30000
>
>
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