20001009: PVOR

>From: address@hidden
>Organization: UCAR/Unidata
>Keywords: 200010091702.e99H2b428162

>
>Hello.
>
>I am told that by using PVOR(THES, GEO) that this now yields a 3-d
>value for EPV.  Is this so?
>
>We are running GEMPAK5.4, patch level 14.
>
>Thanks.
>
>Pat
>-- 
>=======================================================================
>Dr. Patrick S. Market                           Phone: (573) 882 - 1496
>University of Missouri-Columbia                   Lab: (573) 882 - 6372
>Soil and Atmospheric Sciences                     Fax: (573) 884 - 5133
>203 Gentry Hall                    e-mail:  address@hidden
>Columbia, MO  65211              Web:  http://web.missouri.edu/~marketp
>=======================================================================
>


Patrick,

As defined in the GEMPAK User Guide under GPARM, PVOR() is a layer quantity.
If you are looking at a grid cross section in gdcross, then the layer 
quantities are computed automatically: 
 GVCORD   = pres
 GFUNC    = pvor(thes,geo)

If you are using a plan view such as with gdcntr, then glevel should
represent the layer over which you want the calculation to occur.

Steve Chiswell