[Met_help] point stat & ascii2nc

[Watson.Leela]

I am currently trying to use MET to verify 2m temperatures from ARW
forecasts with local observation data available in ASCII format. I
reformatted my observations to fit the format identified in the MET
documentation for the ASCII2NC tool. My observations cover a domain of
approximately 20km x 20km and there are only 12 of them. The grid
spacing of the ARW output is 1km. When I run the point_stat tool I
receive the following message indicating that there are no matching
pairs:

 

Grib Record Index = 11

Initialization time = 1201683600

Valid time = 1201683600

Accumulation time = 0

Grib Record (min, max) = (229.37726, 291.74725)

 

----------------------------------------

Processing 12 observations from 12 PrepBufr messages...

For Grib Field TMP at Z2 for observation type MSONET, over region FULL,
for interpolation method DW_MEAN(3), found 0 pairs.

 

I also noticed that when I ran the point_stat test script using the
sample forecast and ascii data, it also produced similar errors for the
10m UGRD and VGRD values:

 

For Grib Field UGRD at Z10 for observation type ADPUPA, over region
DTC165, for interpolation method UW_MEAN(1), found 0 pairs.

Etc...

 

I am confused as to how there can be no matching pairs when the
observation point MUST fall between 4 grid points...?? Or maybe I am
misunderstanding what the output message is saying. Any help would be
appreciated!

 

Leela Watson

 

*********************************************************

Leela R. Watson, Meteorologist

ENSCO, Inc. / Applied Meteorology Unit

1980 N. Atlantic Ave., Suite 230

Cocoa Beach, FL 32931

Voice: (321) 853-8264

Fax: (321) 853-8415

Email: watson.leela at ensco.com

 

......................................................................
The information contained in this email message is intended only for the use of the individuals to whom it is
addressed and may contain information that is privileged and sensitive. If the reader of this message is not
the intended recipient, you are hereby notified that any dissemination, distribution or copying of this
communication is strictly prohibited. If you have received this communication in error, please notify the
sender immediately by email at the above referenced address. Thank you.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.ucar.edu/pipermail/met_help/attachments/20080909/e37954a0/attachment.html