[Met_help] [rt.rap.ucar.edu #77704] History for Reading wrfout files with MET tools

[Julie Prestopnik via RT]

----------------------------------------------------------------
  Initial Request
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Hello,

I'm just starting to use MET tools and have a right-up-front problem.  I built it on Centos, included all libraries for grib2, etc, and have a set of executables (MET 5.1).   I ran the make test process, no errors, all looked fine.


Now I'm trying to run the point_stat tool, using madis metar data against our local wrf output.  Both data  files are netcdf.  The wrfout file is direct netcdf file from our WRF run (WRF 3.7.1)  and the madis file is directly from the madis_research website, where is was netcdf format already, so I did no conversion on that file.


The problem is immediate : point_stat cannot read the wrfout file, and I don't know why.  ncdump reads it with no problem.  Here's the command and error, using verbose=9:

 ../../bin/point_stat -v 9 ../../data/LSC_fcst/2016082500/wrfout \
../../data/LSC_obs/2016082500/point.metar.20160825_0600 \
./PointStatConfig
DEBUG 1: Default Config File: /mnt/homes/loriotg/MET-5.0/met-5.1/share/met/config/PointStatConfig_default
DEBUG 1: User Config File: ./PointStatConfig
DEBUG 4: Met2dDataFileFactory::new_met_2d_data_file() -> created new Met2dDataFile object of type "FileType_None".
ERROR  :
ERROR  : Trouble reading forecast file "../../data/LSC_fcst/2016082500/wrfout"

The referenced forecast file exists, is on that path, and is properly listed with ncdump.  I think it's a valid WRF output netcdf file.  I'm very interested in using MET tools, and am trying to figure out what I'm doing wrong.  Note that this is the same met.5.1 that passed all tests in the test suite.

Thank you in advance for any help you can give me.

George Loriot
Department of Atmospheric Sciences
Lyndon State College
Lyndonville, VT





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  Complete Ticket History
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Subject: Re: [rt.rap.ucar.edu #77704] Reading wrfout files with MET tools
From: Julie Prestopnik
Time: Fri Aug 26 09:50:01 2016

Hi George.   I'm glad to hear that you are interested in using MET
tools.  Unfortunately, MET doesn't read the netcdf output of WRF
directly.  Instead, we encourage folks to post process WRF output
using the Unified Post Processor (UPP).  It's output is in GRIB format
which can easily be regridded using the copygb utility, whereas there
is no easy way of regridding netcdf data, in general.

Here is a link to our tutorial page on copygb which you may find
useful:
http://www.dtcenter.org/met/users/support/online_tutorial/METv5.0/copygb/index.php

and a link to UPP:
http://www.dtcenter.org/upp/users/

I hope this helps.

Julie

On Fri, Aug 26, 2016 at 9:36 AM, Loriot, George B. via RT
<met_help at ucar.edu> wrote:
>
> Fri Aug 26 09:36:13 2016: Request 77704 was acted upon.
> Transaction: Ticket created by George.Loriot at lsc.vsc.edu
>        Queue: met_help
>      Subject: Reading wrfout files with MET tools
>        Owner: Nobody
>   Requestors: George.Loriot at lsc.vsc.edu
>       Status: new
>  Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=77704 >
>
>
> Hello,
>
> I'm just starting to use MET tools and have a right-up-front
problem.  I built it on Centos, included all libraries for grib2, etc,
and have a set of executables (MET 5.1).   I ran the make test
process, no errors, all looked fine.
>
>
> Now I'm trying to run the point_stat tool, using madis metar data
against our local wrf output.  Both data  files are netcdf.  The
wrfout file is direct netcdf file from our WRF run (WRF 3.7.1)  and
the madis file is directly from the madis_research website, where is
was netcdf format already, so I did no conversion on that file.
>
>
> The problem is immediate : point_stat cannot read the wrfout file,
and I don't know why.  ncdump reads it with no problem.  Here's the
command and error, using verbose=9:
>
>  ../../bin/point_stat -v 9 ../../data/LSC_fcst/2016082500/wrfout \
> ../../data/LSC_obs/2016082500/point.metar.20160825_0600 \
> ./PointStatConfig
> DEBUG 1: Default Config File: /mnt/homes/loriotg/MET-5.0/met-
5.1/share/met/config/PointStatConfig_default
> DEBUG 1: User Config File: ./PointStatConfig
> DEBUG 4: Met2dDataFileFactory::new_met_2d_data_file() -> created new
Met2dDataFile object of type "FileType_None".
> ERROR  :
> ERROR  : Trouble reading forecast file
"../../data/LSC_fcst/2016082500/wrfout"
>
> The referenced forecast file exists, is on that path, and is
properly listed with ncdump.  I think it's a valid WRF output netcdf
file.  I'm very interested in using MET tools, and am trying to figure
out what I'm doing wrong.  Note that this is the same met.5.1 that
passed all tests in the test suite.
>
> Thank you in advance for any help you can give me.
>
> George Loriot
> Department of Atmospheric Sciences
> Lyndon State College
> Lyndonville, VT
>
>
>
>



--
Julie Prestopnik
National Center for Atmospheric Research
Research Applications Laboratory
Phone: 303.497.8399
Email: jpresto at ucar.edu


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