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[GEMPAK #MNV-460077]: GEMPAK question

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  • Subject: [GEMPAK #MNV-460077]: GEMPAK question
  • Date: Thu, 09 Apr 2015 05:43:08 -0600
> Hi,
> 
> I just have a quick question about the use of frontogenesis (F-vectors)
> in GEMPAK.  I know there is a simple expression for q-vectors (qvec), do
> f-vectors have any comparable notation for GFUNC?   If not, would you
> happen to know of any online resources that might help in building an
> F-vector for use in GEMPAK?  I did notice the scalar is available with
> FRNT(thta,wnd), but I was hoping to calculate divergence of the
> F-vector.  Thanks for any help or any resources you are able to point me
> toward.
> 
> Nathan

Hi Nathan,

After talking with a friend at NCEP, I believe what will work is to use QVEC 
with the real wind (wnd) instead of the geostrophic wind (geo):

So an F vector would be QVEC(thta,wnd) 

Michael James
Unidata Program Center
Boulder, Colorado


Ticket Details
===================
Ticket ID: MNV-460077
Department: Support GEMPAK
Priority: High
Status: Open