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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