[Met_help] [rt.rap.ucar.edu #71833] History for Running MET with single radar verification

[John Halley Gotway via RT]

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  Initial Request
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I am trying to do some verification of my WRF-ARW data using a single radar
as "truth" data. I have put my WRF output through UPP and have a grib
output, but I'm unsure about where to go from here (I'm actually very
unsure if I set the levels in UPP's wrf_cntrl.parm correctly). I have gone
through the MET tutorial, but I still have some doubt about how to use MET
when dealing with radar data.

I gridded the radar data using Radx and it is in a netCDF (CF-compliant)
format but am unsure if MET can handle this format or if I will have to
process this file further.

Could you please tell me if I'm headed in the right direction, if there is
anything I should watch out for, and/or if there are any additional
resources related to this type of verification?
Thank you,
Mariana


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  Complete Ticket History
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Subject: Running MET with single radar verification
From: John Halley Gotway
Time: Thu May 07 10:05:24 2015

Mariana,

MET "should" be able to handle CF-compliant NetCDF data, as long as it
includes the projection information for the grid on which it resides.
If
it's on a simple lat/lon grid, then MET can infer the grid by reading
the
lat/lon variables and computing their spacing.

I'd suggest trying it out by using the "plot_data_plane" utility to
visualize the data.  If plot_data_plane can read the data, MODE can
too.
Let's suppose your CF-compliant NetCDF data is stored in a variable
named
"RADAR(lat, lon)".  Just substitute in the correct variable and file
names
in the example below.  Try running:
    met-5.0/bin/plot_data_plane radar_file.nc radar_file.ps
'name="RADAR";
level="(*,*)";'

If that runs without error, you're all set!

If not, there's more work to do.  It'd probably be easiest to have you
send
us a sample data file, following the instructions posted here:
   http://www.dtcenter.org/met/users/support/met_help.php#ftp
We can take a look and let you know what changes are required to get
MET
reading your data.

Thanks,
John Halley Gotway
met_help at ucar.edu

On Thu, May 7, 2015 at 9:22 AM, Mariana Scott via RT
<met_help at ucar.edu>
wrote:

>
> Thu May 07 09:22:51 2015: Request 71833 was acted upon.
> Transaction: Ticket created by mof0001 at uah.edu
>        Queue: met_help
>      Subject: Running MET with single radar verification
>        Owner: Nobody
>   Requestors: mof0001 at uah.edu
>       Status: new
>  Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=71833 >
>
>
> I am trying to do some verification of my WRF-ARW data using a
single radar
> as "truth" data. I have put my WRF output through UPP and have a
grib
> output, but I'm unsure about where to go from here (I'm actually
very
> unsure if I set the levels in UPP's wrf_cntrl.parm correctly). I
have gone
> through the MET tutorial, but I still have some doubt about how to
use MET
> when dealing with radar data.
>
> I gridded the radar data using Radx and it is in a netCDF (CF-
compliant)
> format but am unsure if MET can handle this format or if I will have
to
> process this file further.
>
> Could you please tell me if I'm headed in the right direction, if
there is
> anything I should watch out for, and/or if there are any additional
> resources related to this type of verification?
> Thank you,
> Mariana
>
>

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