[Met_help] some questions about point_stat

[Ruifang Li]

Hi, John,
I am a little bit confused about mask_grid and mask_poly in point_stat
config file.

In pb2nc, I defined mask_grid=" ", mask_poly="MET_BASE/data/poly/T8.poly",
so I got obs for T8 domain since my WRF fcst are on this domain.
In point_stat, I did several test about mask_grid and mask_poly , here is
the result

                                    * mask_grid[]    mask_poly[]   domain in
.stat     .stat file size*

                                         FULL               T8
      FULL,T8             7,017,368
                                                                 T8
         T8                       3,010,624
--                                       FULL
        FULL                  3,507,520

 My question are:

   -  it's better to define both of mask_poly and mask_grid or only one of
   them is enough?
   - If I define both of mask_poly and mask_grid, the FULL and T8 records
   show up in .stat file, is there any difference between FULL and T8 records?


Thanks for your help,
Ruifang

Mesoscale & Microscale Meteorology Division
Phone: 303-497-8938
Office:  FL3-3085
Email:  lir at ucar.edu
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