20040527: Simple GEMPAK Questions

Sam,


>From: Sam Ng <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200405272010.i4RKAdtK007391

>Dear Support,
>
>
>I have 2 GEMPAK questions:
>
>1)  When calculating a layer average or difference between 2 levels 
>(i.e., 800 and 300 mb), does GEMPAK takes into account the in-between 
>levels during its calculation?

No, when you use LDF and GLEVEL=level1:level2 the solution
is only for the specified levels, and not an integrated solution
using all levels found in between.
>
>2)  GDDIAG computes a diagnostic scalar grid and saves the result in a 
>GEMPAK grid file but is there a way to do the same thing but with a 
>vector (i.e. Qs and Qn) grid?

You can store the components of the vector grid, using
UR and VR or UN and VN. The components can be recombined later using
VECR or VECN respectively.


Steve Chiswell
Unidata User SUpport


>
>Thanks,
>
>Sam Ng
>
>
>
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>                                                 ~~~~~~~~~~~~~~~~~
>Sam Ng                                           ~~~~~~~~~~~~~~~
>Research Assistant                                ~~~~~~~~~~~~
>Saint Louis University                             ~~~~~~~~~
>335 Macelwane Hall                                ~~~~~~~~
>3507 Laclede Ave.                                 ~~~~~~~
>St. Louis, MO 63103                               ~~~~~~~
>(314) 977-3133 FAX (314) 977-3117                  ~~~~~~~
>address@hidden                                      ~~~~~~
>http://www.eas.slu.edu/People/Students/SNg/index.html  ~~~~~
>                                                          ~~~~
>"I had to search my memory as I looked into those eyes.     ~~~
>Our lives change like the WEATHER but a legend never dies."  ~~~
>                                                               ~~
>                                      -- Jimmy Buffett         ~
>
--
NOTE: All email exchanges with Unidata User Support are recorded in the
Unidata inquiry tracking system and then made publically available
through the web.  If you do not want to have your interactions made
available in this way, you must let us know in each email you send to us.