[Met_help] [rt.rap.ucar.edu #64613] History for problems on verifying WRF output with mast obs
John Halley Gotway via RT
met_help at ucar.edu
Tue Feb 18 12:02:19 MST 2014
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Initial Request
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Dear Sir/Madam,
I'd like to apply MET to verfy WRF output with mast obs, and mast obs is on 10,30,40,50,60,70m etc, above ground level. But when I do such jobs with the following command: ./point_stat wrfout_d03_2012-07-02_02\:00\:00.grb1 mast_2012-07-02_02.nc PointStatConfig, I encounter some problems. For the wrfout_d03_2012-07-02_02\:00\:00.grb1 file, it's converted from the WRF output using UPP and has been interpolated to several AGLs including 70m. The mast_2012-07-02_02.nc, which is generated using the ascii2nc utility in MET, also contains several vertical levels (AGL) in it. In the PoingStatConfig, I want to verify the Z70 WIND, but to my surpise, all vertical levels rather than only the 70m AGL in the mast_2012-07-02_02.nc is used. Will you please give me some indication on what's going on with this?Thank you! I attach some necessary files for test within this email.
Kind regards,
Yangyang Zhao
--
Yangyang Zhao
Department of Atmospheric and Oceanic Sciences,
School of Physics, Peking University,
Beijing, 100871, China.
Email: zyy2010 at pku.edu.cn hh_honey at 126.com
从网易126邮箱发来的云附件
wrfout_d03_2012-07-02_02_00_00.grb1 (23.89M, 2013年12月28日 12:11 到期)
下载
mast_2012-07-02_02.nc (1.86K, 2013年12月28日 12:12 到期)
下载
mast_2012-07-02_02.txt (260B, 2013年12月28日 12:12 到期)
在线预览 | 下载
PointStatConfig (2.2K, 2013年12月28日 12:12 到期)
下载
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Complete Ticket History
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Subject: problems on verifying WRF output with mast obs
From: 赵洋洋
Time: Thu Dec 12 22:15:49 2013
Sorry for the wrongly submitted PointStatConfig file, and the right
one is attached in this email named PointStatConfig_right
.
King regards,
Yangyang Zhao
--
Yangyang Zhao
Department of Atmospheric and Oceanic Sciences,
School of Physics, Peking University,
Beijing, 100871, China.
Email: zyy2010 at pku.edu.cn hh_honey at 126.com
At 2013-12-13 12:42:29,"met_help at ucar.edu via RT" <met_help at ucar.edu>
wrote:
>Greetings,
>
>This message has been automatically generated in response to the
>creation of a trouble ticket regarding:
> "problems on verifying WRF output with mast obs",
>a summary of which appears below.
>
>There is no need to reply to this message right now. Your ticket has
been
>assigned an ID of [rt.rap.ucar.edu #64613].
>
>Please include the string:
>
> [rt.rap.ucar.edu #64613]
>
>in the subject line of all future correspondence about this issue. To
do so,
>you may reply to this message.
>
> Thank you,
> met_help at ucar.edu
>
>-------------------------------------------------------------------------
>
>Dear Sir/Madam,
>
>I'd like to apply MET to verfy WRF output with mast obs, and mast obs
is on 10,30,40,50,60,70m etc, above ground level. But when I do such
jobs with the following command: ./point_stat wrfout_d03_2012-07-
02_02\:00\:00.grb1 mast_2012-07-02_02.nc PointStatConfig, I encounter
some problems. For the wrfout_d03_2012-07-02_02\:00\:00.grb1 file,
it's converted from the WRF output using UPP and has been interpolated
to several AGLs including 70m. The mast_2012-07-02_02.nc, which is
generated using the ascii2nc utility in MET, also contains several
vertical levels (AGL) in it. In the PoingStatConfig, I want to verify
the Z70 WIND, but to my surpise, all vertical levels rather than only
the 70m AGL in the mast_2012-07-02_02.nc is used. Will you please
give me some indication on what's going on with this?Thank you! I
attach some necessary files for test within this email.
>
>Kind regards,
>Yangyang Zhao
>
>
>
>
>--
>
>
>Yangyang Zhao
>
>Department of Atmospheric and Oceanic Sciences,
>School of Physics, Peking University,
>Beijing, 100871, China.
>Email: zyy2010 at pku.edu.cn hh_honey at 126.com
>
>
>
>
>从网易126邮箱发来的云附件
>wrfout_d03_2012-07-02_02_00_00.grb1 (23.89M, 2013年12月28日 12:11 到期)
>下载
>mast_2012-07-02_02.nc (1.86K, 2013年12月28日 12:12 到期)
>下载
>mast_2012-07-02_02.txt (260B, 2013年12月28日 12:12 到期)
>在线预览 | 下载
>PointStatConfig (2.2K, 2013年12月28日 12:12 到期)
>下载
------------------------------------------------
Subject: Re: [rt.rap.ucar.edu #64613] problems on verifying WRF output with mast obs
From: John Halley Gotway
Time: Fri Dec 13 11:14:03 2013
Yangyang,
I see that you're having trouble getting Point-Stat to perform the
type of vertical level matching that you expect. I retrieved the
PointStatConfig file that you sent, but didn't see any data files
attached to your email. If you'd like to send us data, you can post
it to our anonymous ftp site following these instructions:
http://www.dtcenter.org/met/users/support/met_help.php#ftp
However, I have a pretty good guess as to what's going on. Looking in
your Point-Stat config file, I see that you're using the "ADPSFC"
message type. That message type is a special value that tells
Point-Stat that these observations occur at the surface. However,
based on your description, that's not correct - they actually occur up
to 70 meters above ground level. When Point-Stat sees that
you're verifying a "vertical level" type of field (e.g. 2m temp, 10m
winds, or even 70m winds) against a surface message type ("ADPSFC" or
"SFCSHP") it uses *ALL* of the point observations of that
type regardless of their height above ground. This logic usually
simplifies things so that when you're verifying 2m temperature, your
observations don't have to have exactly a 2m level value in them.
But in your case, it causes all observations to be used in the
verification of all forecast levels.
The simple fix is to change the point observation message type from
"ADPSFC" to "ADPUPA".
Please give that a shot and let me know if Point-Stat does what you
expect.
Thanks,
John Halley Gotway
met_help at ucar.edu
On 12/12/2013 09:42 PM, 赵洋洋 via RT wrote:
>
> Thu Dec 12 21:42:28 2013: Request 64613 was acted upon.
> Transaction: Ticket created by hh_honey at 126.com
> Queue: met_help
> Subject: problems on verifying WRF output with mast obs
> Owner: Nobody
> Requestors: hh_honey at 126.com
> Status: new
> Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=64613 >
>
>
>
> Dear Sir/Madam,
>
> I'd like to apply MET to verfy WRF output with mast obs, and mast
obs is on 10,30,40,50,60,70m etc, above ground level. But when I do
such jobs with the following command: ./point_stat wrfout_d03_2012-07-
02_02\:00\:00.grb1 mast_2012-07-02_02.nc PointStatConfig, I encounter
some problems. For the wrfout_d03_2012-07-02_02\:00\:00.grb1 file,
it's converted from the WRF output using UPP and has been interpolated
to several AGLs including 70m. The mast_2012-07-02_02.nc, which is
generated using the ascii2nc utility in MET, also contains several
vertical levels (AGL) in it. In the PoingStatConfig, I want to verify
the Z70 WIND, but to my surpise, all vertical levels rather than only
the 70m AGL in the mast_2012-07-02_02.nc is used. Will you please
give me some indication on what's going on with this?Thank you! I
attach some necessary files for test within this email.
>
> Kind regards,
> Yangyang Zhao
>
>
>
>
> --
>
>
> Yangyang Zhao
>
> Department of Atmospheric and Oceanic Sciences,
> School of Physics, Peking University,
> Beijing, 100871, China.
> Email: zyy2010 at pku.edu.cn hh_honey at 126.com
>
>
>
>
> 从网易126邮箱发来的云附件
> wrfout_d03_2012-07-02_02_00_00.grb1 (23.89M, 2013年12月28日 12:11 到期)
> 下载
> mast_2012-07-02_02.nc (1.86K, 2013年12月28日 12:12 到期)
> 下载
> mast_2012-07-02_02.txt (260B, 2013年12月28日 12:12 到期)
> 在线预览 | 下载
> PointStatConfig (2.2K, 2013年12月28日 12:12 到期)
> 下载
>
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