[Met_help] Running point stat

John Halley Gotway johnhg at rap.ucar.edu
Wed May 6 15:01:52 MDT 2009


Thank you for sending such a detailed set of files to help me troubleshoot
the issue.  I'm taking a look at it now and will get back to you soon.

In the meantime, I actually have a question for you.  The same day I
received your MET-Help email, I also received an email from another user
who is trying to verify MM5 data.  He's wondering if there are any tools
available for converting MM5 output into a GRIB format that MET could

You mentioned in your email that you converted MM5 data from sigma levels
to pressure levels and wrote your output in GRIB.  Can you tell me how you
went about doing that?  Did you write code yourself or use any existing
tools?  I haven't worked with MM5 data in the past, so I'm hoping you
might have some advice to offer that I could pass along to this other

John Halley Gotway
johnhg at ucar.edu

> Dear sirs,
> I am in the learning stage of MET, so please excuse my inexperience in
> using the software, and questions that I will have.
> I am trying to run point_stat by following the instructions within the
> user documentation; however, the output files are still empty although
> there is no error message. When I installed the MET, I ran the test
> script, which didn't indicate any error that MET wasn't working
> properly. I also updated the MET modules by installing the patch tar
> file, and compiling the code. I am comparing MM5 output with point
> observations for time period between January 1, 2000 and January 4,
> 2000, as an example. I first converted MM5 sigma levels to MM5 pressure
> levels, and created grib1 file from there as forecast file. Then, I
> converted ascii point observations to netcdf file. When I check the
> contents of each file, they all have reasonable values (to the best of
> my knowledge). But, obviously there is either some data that is not
> quite right, or I am doing something wrong, including the setup of
> configuration file, and as a result I don't get any error or any result.
> Could you please help me in identifying my error by reviewing the
> contents of the attached tar file, which has the input (obs netcdf ,
> content of gribfile input, output, and configuration files, and my
> command at the prompt, and its output?
> Thank you very much in advance. With regards,
> Kemal.
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