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[GEMPAK #NRN-252619]: GEMPAK - CAPE CIN with PRES and HGHT
- Subject: [GEMPAK #NRN-252619]: GEMPAK - CAPE CIN with PRES and HGHT
- Date: Wed, 12 Apr 2006 11:12:34 -0600
> Inquiry: I'm trying to compute CAPV and CINV from an upper air sounding
> listed in HGHT coordinates (hght.fil). As an example, I attached two text
> files from which I created GEMPAK upper air files. The only difference
> between hght.fil and pres.fil is the order of the columns, with HGHT being in
> the 1st column of hght.fil, and PRES being in the 1st column of pres.fil.
>
> When I ask SNLIST for CAPV and CINV, pres.fil gives CAPV = 897.56 CINV =
> -19.75
> but hght.fil gives
> CAPV = 0.00 CINV = 0.00
>
>
David,
The limitation of needing the file on pressure coordinates extends to the LFCV
computation for
determining the level of free convection within the CAPV integration. I don't
see any work arounds at this point other than to reorder height coordinate
files to
pressure coordinate files as you provided in your text attachment.
Sorry that I don't have any other solution for you at this time...
Steve Chiswell
Unidata User Support
Ticket Details
===================
Ticket ID: NRN-252619
Department: Support GEMPAK
Priority: Critical
Status: Closed