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>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