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Re: 20001004: data for GEMPAK

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  • Subject: Re: 20001004: data for GEMPAK
  • Date: Thu, 5 Oct 2000 13:25:07 -0600 (CST)
> 
> 
> Javier,
> 
> To use GRIB data within GEMPAK, the data will need to be converted to
> a GEMPAK grid file. You can do this with either the program NAGRIB
> (as described in the user manual), or the program DCGRIB (which can
> be used to decode realtime data from the LDM through the pqact.conf
> entries are are shown in our tutorial).
> 
> If you have the grib file, you can probably decode it using:
> cat gribfile | dcgrib -d - PACK YYYYMMDDHH_model.gem
> In the above, you will need to have sourced the Gemenviron file into your
> csh environmant so that the GEMPAK tables are found by the program.
> The YYYYMMDDHH characters will be replaced by the date and time found 
> in the GRIB data.

I will try your sugestions.

> 
> There are sample data files in gempak5.4/data directory.
> The files with .sfc and .shp are surface data files from
> land and ship stations respectively. The .snd file is upperair (radiosonde)
> data, and .grd is a gridded data file.
> 
> If you need additional data, then the case study is probably a good
> start for excersises:
> http://www.joss.ucar.edu/cometCases/
> You can obtain files in GEMPAK format for many types of weather events that
> might be useful for either learning the software package, or for
> teaching students elements of meteorology.
> 
I will try a case study to become familiar with Gempak  instructions.

> If you need more help in setting up a data set, let me know and I will create
> one for you.

As a learning experience for myself I will try to  create one. In case I
fail, I'll send a desperate message for help. 
Thank you.
Javier Soley