[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[GEMPAK #CAS-776545]: CINS GEMPAK

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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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: [GEMPAK #CAS-776545]: CINS GEMPAK
  • Date: Tue, 05 Nov 2013 12:30:48 -0700
Hi Daniel,

CINS is the term used in GEMPAK for Convective Inhibition, typically just 
called CIN.

From http://www.unidata.ucar.edu/cgi-bin/gempak/manual/apxA_index

CINS - Convective Inhibition
  
        CINS = GRAVTY * SUMN ( DELZ * ( TP - TE ) / TE )
               SUMN = sum over sounding layers from top of the mixed 
                      layer to LFCT for which ( TP - TE ) is less 
                      than zero.
               DELZ = incremental depth
               TP   = temperature of a parcel from the lowest 
                      !500 m of the atmosphere, raised dry 
                      adiabatically to the LCL and moist
                      adiabatically thereafter
               TE   = temperature of the environment

CINV - CINS computed by using virtual temperature
  
        CINV = GRAVTY * SUMN ( DELZ * ( TVP - TVE ) / TVE )
               SUMN = sum over sounding layers from top of the mixed 
                      layer to LFCV for which ( TVP - TVE ) is less 
                      than zero.
               DELZ = incremental depth
               TVP  = virtual temperature of a parcel from the
                      lowest !500 m of the atmosphere, raised
                      dry adiabatically to the LCL and moist
                      adiabatically thereafter
               TVE  = virtual temperature of the environment



-Michael James
Unidata

> Hello,
> 
> within your software GEMPAK one can find the parameter CINS. My question
> is: What stands the 'S' for?
> 
> Thanks for your answer :)
> 
> Best regards
> Daniel
> 
> 

Ticket Details
===================
Ticket ID: CAS-776545
Department: Support GEMPAK
Priority: Normal
Status: Open