[Met_help] Information about accumulation precipitation

John Halley Gotway johnhg at rap.ucar.edu
Tue May 12 07:15:52 MDT 2009


Thank you very much for sending the page numbers.  We'll update the User's Guide to indicate that the output of PCP-Combine may be used with any of the MET statistics tools (Point-Stat, Grid-Stat,
MODE, Wavelet-Stat).  When maintaining a document that large, errors are bound to slip through.  It's nice to know that there are MET users reading it closely!


Francesco Piani wrote:
> Hi John.
> In fact, I read in the User Guide METv2.0 that PCP-combine can be used only to produce input for GRID-STAT e MODE.
> - Pag. 3-14 The Pcp-combine...containing the desired accumulation interval, for input to the MODE and GRID-STAT tools
> - Pag. 4-7 Required Arguments: The fcst_file argument indicates the GRIB file containing the model data to be verified.
> Thanks for your prompt reply.
> Francesco
> --------------------------------------------------
> From: "John Halley Gotway" <johnhg at rap.ucar.edu>
> Sent: Monday, May 11, 2009 7:37 PM
> To: "Francesco Piani" <piani at lamma.rete.toscana.it>
> Cc: <met_help at ucar.edu>
> Subject: Re: [Met_help] Information about accumulation precipitation
>> Francesco,
>> As of METv2.0 at least, Point-Stat can in fact read the NetCDF output of the PCP-Combine tool.  If you're using an older version of MET, I'd suggest upgrading to METv2.0.
>> Please let me know where you read that information about Point-Stat.  If it was in the current version of the MET User's Guide (for METv2.0), then that's incorrect, and we'll need to update it.
>> Sorry for the confusion!
>> John Halley Gotway
>> johnhg at ucar.edu
>> Francesco Piani wrote:
>>> Hi all.
>>> I'm using MET to verify the performances of WRF over Tuscany Region.
>>> I want to use Point-Stat tool to match station data and QPF over 24hours.
>>> I saw in the User-Guide that PCP-Combine has a NC files as output but Point-Stat want a GRIB file in input. So I used GrADS to accumulate precipitation and I write a program in C++ to re-obtain a GRIB files to ingest into Point-Stat.
>>> Is there some other method to aggregate 3-hr precipitation over a different interval, obtaining GRIB file, without passing through GrADS?
>>> Is one of your future goal to permit NC input files also for Point-Stat?
>>> Thanks for your kindness.
>>> Francesco Piani
>>> Dott. Ing. Francesco Piani
>>> Weather Forecaster
>>> LaMMA Consortium - Hydrological Service Tuscany Region
>>> Via Madonna del Piano 10
>>> Sesto Fiorentino (FI)
>>> piani at lamma.rete.toscana.it
>>> francesco.piani at regione.toscana.it
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