RE: decoding the UKMET (fwd)

Ross,

i'm in the middle of a project so it will be a couple of days before i can 
devote some time to the problem. i speculate it can be done, but i don't 
know for sure.

RObb...





On Tue, 29 May 2007, Jeff Weber wrote:

> Hiya Robb,
>
> nice storm 'eh?!!!
>
> Can you help this guy out?
>
> Jeff
> ---
> ---------- Forwarded message ----------
> Date: Tue, 29 May 2007 07:03:12 -0700
> From: "Ross,Charles H - PGPW-5" <address@hidden>
> To: address@hidden
> Subject: RE: decoding the UKMET
>
> I’m rephrasing my question…
>
>
>
> Is anyone out there currently (successfully) decoding the UKMET model off
> the Noaaport using either the gribtonc or the unidata java decoder?
>
>
>
> Thanks for taking the time to check…
>
>
>
> If this is the wrong forum to be asking this question, please direct me to
> the proper unidata forum.  Thanks…
>
>
>
> Charles
>
>
>
> ________________________________
>
> From: address@hidden [mailto:address@hidden] On Behalf Of Ross,Charles H - 
> PGPW-5
> Sent: Wednesday, May 23, 2007 11:41 AM
> To: address@hidden
> Subject: decoding the UKMET
>
>
>
> I’m having trouble creating a valid CDL (thus netCDF) for the UKMET.
>
>
>
> Here’s my pqact.conf entry:
>
>
>
> HDS     ^H..... EGRR ([0-3][0-9])([0-2][0-9])([0-5][0-9])
>
>        FILE    /usr/local/models/(\1:yyyy)(\1:mm)\1\2_uk.grib
>
>
>
>
>
> When I run a simple gribtocdl 2007052212_ukmet.grb > uk.cdl command I 
> continually get this as my dimensions in the file:
>
>
>
> dimensions:
>
>        record = UNLIMITED ;   // (reference time, forecast time)
>
>        lat = 73 ;            // latitude
>
>        lon = -1 ;            // longitude
>
>        level = 12 ;           // isobaric levels
>
>        time_len = 21 ;        // string length for datetime strings
>
>        valtime_offset = 13 ;   // number of offset times
>
>        nmodels = 4 ;          // number of models
>
>        ngrids = 9 ;           // number of grids
>
>        nav = 1 ;              // for navigation
>
>        nav_len = 100 ;        // max string length for navigation strings
>
>
>
> Notice lon=-1.
>
>
>
> Further down in the data section it tells me that:
>
>  lon =-30.00 ;
>
>
>
> I believe lon should equal 144 but obviously something is not working.
>
>
>
> We take this same data and run it through the gempak decoders without a 
> problem.  Anyone have any ideas what is going on with the gribtocdl program on 
> this grib file?  I’ve run lots of  other model data through the gribtocdl 
> program and never had a problem such as this.
>
>
>
> Also, the java grib decoder has issues with this as well…
>
>
>
> [ldm@metbox4 ukmet]$ java -Xmx512m ucar.nc2.iosp.grib.Grib2Netcdf 
> 2007052212_ukmet.grb uk_test.nc
>
> Wed May 23 18:32:59 GMT 2007 ... Start of Grib2Netcdf
>
> read grib file=2007052212_ukmet.grb write to netCDF file=uk_test.nc
>
> Using default table:resources/grib/tables/wmo_2_v3.tab (74:-1:-1)
>
> Exception in thread "main" java.lang.NullPointerException
>
>        at ucar.nc2.Variable.setDimensions(Variable.java:1132)
>
>        at ucar.nc2.NetcdfFileWriteable.addVariable(NetcdfFileWriteable.java:335)
>
>        at ucar.nc2.FileWriter.writeToFile(FileWriter.java:158)
>
>        at ucar.nc2.FileWriter.writeToFile(FileWriter.java:65)
>
>        at ucar.nc2.iosp.grib.Grib2Netcdf.main(Grib2Netcdf.java:87)
>
>
>
>
>
> Thanks for any help on this one..
>
>
>
> Charles

===============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
address@hidden             WWW: http://www.unidata.ucar.edu/
===============================================================================