[Met_help] [rt.rap.ucar.edu #42041] History for point stat verification of wind direction

[RAL HelpDesk {for John Halley Gotway}]

----------------------------------------------------------------
  Initial Request
----------------------------------------------------------------

Am I correct that point-stat cannot be used to verify wind direction?  I
tried to include it in the config file and got an error message that
indicated it was not possible.  Is there a way around this?

 

Thank you,

Jackie

 

Jackie Miller
Meteorologist

Vaisala Inc.

Phone +1 303 885 3251 
Mobile +1 303 885 3251
www.vaisala.com
<https://exchange.ou.edu/owa/redir.aspx?C=b302bd7f7cb24f099b2eb70ba1b9bf
5f&URL=https%3a%2f%2fwebmail.vaisala.com%2fexchweb%2fbin%2fredir.asp%3fU
RL%3dhttp%3a%2f%2fwww.vaisala.com> 

 

This electronic message contains a communication which is strictly
confidential and intended solely for the addressee(s).  Any
non-addressee is prohibited from reading, disseminating, distributing,
or copying the communication contained herein.  If you are in possession
of the communication in error, please immediately notify the sender via
an electronic response and destroy the original communication.  Thank
you.

 

U.S. Export Restrictions & Disclaimer:  Export of any technical
information contained in this email and/or its attachments is subject to
the export control laws and regulations of the U.S. Government and may
require a valid license or written approval prior to export. 

 



----------------------------------------------------------------
  Complete Ticket History
----------------------------------------------------------------

Subject: Re: [rt.rap.ucar.edu #42041] point stat verification of wind direction
From: John Halley Gotway
Time: Wed Nov 10 09:12:52 2010

Jackie,

Yes, that's correct.  Point-Stat cannot be used directly to verify
wind direction.  It's trickier since it's a "circular" variable rather
than a scalar like all the other fields people typically
verify.  We have added some incremental support for verifying wind
direction, but it's not completely satisfying.  Really we'd like more
advice from the wind energy community for ways of enhancing our
support for verifying winds.

Please take a look at the practical exercises from the tutorial for an
example of how you can verify wind direction using MET:
   http://www.dtcenter.org/met/users/support/OnLinePractical/OnLinePractical_810/point_stat/wind_dir.php

The steps are basically:
(1) When you run Point-Stat you can select one or more
"fcst_wind_thresh" and "obs_wind_thresh" values that determine which
U/V pairs are included in the VL1L2 lines Point-Stat creates.
(2) You can run STAT-Analysis to aggregate together multiple VL1L2
lines and dump out errors for the wind direction.  Those errors are
computed in two different ways - as described at the bottom of
that webpage.

John

On 11/09/2010 08:44 PM, RAL HelpDesk {for jackie.miller} wrote:
>
> Tue Nov 09 20:44:53 2010: Request 42041 was acted upon.
> Transaction: Ticket created by jackie.miller at vaisala.com
>        Queue: met_help
>      Subject: point stat verification of wind direction
>        Owner: Nobody
>   Requestors: jackie.miller at vaisala.com
>       Status: new
>  Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=42041 >
>
>
> Am I correct that point-stat cannot be used to verify wind
direction?  I
> tried to include it in the config file and got an error message that
> indicated it was not possible.  Is there a way around this?
>
>
>
> Thank you,
>
> Jackie
>
>
>
> Jackie Miller
> Meteorologist
>
> Vaisala Inc.
>
> Phone +1 303 885 3251
> Mobile +1 303 885 3251
> www.vaisala.com
>
<https://exchange.ou.edu/owa/redir.aspx?C=b302bd7f7cb24f099b2eb70ba1b9bf
>
5f&URL=https%3a%2f%2fwebmail.vaisala.com%2fexchweb%2fbin%2fredir.asp%3fU
> RL%3dhttp%3a%2f%2fwww.vaisala.com>
>
>
>
> This electronic message contains a communication which is strictly
> confidential and intended solely for the addressee(s).  Any
> non-addressee is prohibited from reading, disseminating,
distributing,
> or copying the communication contained herein.  If you are in
possession
> of the communication in error, please immediately notify the sender
via
> an electronic response and destroy the original communication.
Thank
> you.
>
>
>
> U.S. Export Restrictions & Disclaimer:  Export of any technical
> information contained in this email and/or its attachments is
subject to
> the export control laws and regulations of the U.S. Government and
may
> require a valid license or written approval prior to export.
>
>
>

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