[Met_help] [rt.rap.ucar.edu #47246] History for Wind speed and pinterp

[RAL HelpDesk {for Paul Oldenburg}]

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  Initial Request
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Hi,

In the MET v3.0.1 Users Guide it states that WIND can be used in the fcst_field for point_stat’s configuration file, and if the wind speed is not present in the input files then U and V will be used to construct the wind speed. Does this only work with Grib input? I’ve been trying to get it to work with input from pinterp and am having no luck. I am not sure if it is a syntax issue or the file format.

What I tried was setting fcst_field=[“WIND(0,0,*,*)”] amd obs_field=[“WIND/Z10”] as a first attempt to just pull the bottom model level. Ideally, I want to compare the wind from U10 and V10 out of WRF to the surface observations, but I figured I would start with the bottom model level to see if I could get that to work. Do I need to correct my syntax?

Thanks,
     Bill

_______________________________________________
William I. Gustafson Jr., Ph.D.
Scientist
ATMOSPHERIC SCIENCES AND GLOBAL CHANGE DIVISION

Pacific Northwest National Laboratory
P.O. 999, MSIN K9-30
Richland, WA  99352
Tel: 509-372-6110
William.Gustafson at pnnl.gov
http://www.pnl.gov/atmospheric/staff/staff_info.asp?staff_num=5716
http://www.researcherid.com/rid/A-7732-2008


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  Complete Ticket History
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Subject: Re: [rt.rap.ucar.edu #47246] Wind speed and pinterp
From: Paul Oldenburg
Time: Tue May 31 15:44:11 2011

Bill,

Unfortunately, MET will only derive wind speed from U and V for GRIB
input data.  If you run your WRF NetCDF output
through the WRF post processor (WPP), that will produce GRIB data that
MET will read and use calculate wind speeds.  At
this time, that is probably the easiest path to solve your problem.
Please let us know if you have any questions.

Paul


On 05/31/2011 01:26 PM, RAL HelpDesk {for Gustafson, William I} wrote:
>
> Tue May 31 13:26:57 2011: Request 47246 was acted upon.
> Transaction: Ticket created by william.gustafson at pnnl.gov
>        Queue: met_help
>      Subject: Wind speed and pinterp
>        Owner: Nobody
>   Requestors: william.gustafson at pnnl.gov
>       Status: new
>  Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=47246 >
>
>
> Hi,
>
> In the MET v3.0.1 Users Guide it states that WIND can be used in the
fcst_field for point_stat’s configuration file, and if the wind speed
is not present in the input files then U and V will be used to
construct the wind speed. Does this only work with Grib input? I’ve
been trying to get it to work with input from pinterp and am having no
luck. I am not sure if it is a syntax issue or the file format.
>
> What I tried was setting fcst_field=[“WIND(0,0,*,*)”] amd
obs_field=[“WIND/Z10”] as a first attempt to just pull the bottom
model level. Ideally, I want to compare the wind from U10 and V10 out
of WRF to the surface observations, but I figured I would start with
the bottom model level to see if I could get that to work. Do I need
to correct my syntax?
>
> Thanks,
>      Bill
>
> _______________________________________________
> William I. Gustafson Jr., Ph.D.
> Scientist
> ATMOSPHERIC SCIENCES AND GLOBAL CHANGE DIVISION
>
> Pacific Northwest National Laboratory
> P.O. 999, MSIN K9-30
> Richland, WA  99352
> Tel: 509-372-6110
> William.Gustafson at pnnl.gov
> http://www.pnl.gov/atmospheric/staff/staff_info.asp?staff_num=5716
> http://www.researcherid.com/rid/A-7732-2008


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