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[IDV #RJX-162617]: Difficulty Converting GFS Data into netcdf with 2.6u2

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  • Subject: [IDV #RJX-162617]: Difficulty Converting GFS Data into netcdf with 2.6u2
  • Date: Sat, 18 Apr 2009 07:41:01 -0600
Hi Bill-

> Thanks Don  I'll give it a shot.
> 
> Also is the utilitiy to convert GRIB to netcdf available separately from
> IDV?  It's much nicer w/ better output and in my experience more reliable
> than NCL's (despite the current misadventure).

Using the ncIdv.jar in the 2.6u2 or 2.7a1 distribution, you should be
able to run:

java -Xmx256m -classpath ncIdv.jar ucar.nc2.iosp.grib.Grib2Netcdf 
<GribFileToRead> <NetCDF output file>

That avoids the error in NetcdfCFWriter that you were encountering.

Don

Don Murray

> On 4/16/09 15:26 , "Unidata IDV Support" <address@hidden>
> wrote:
> 
> > Hi Bill-
> >
> > Thanks for the sample file.  I can reproduce the error you are seeing with 
> > IDV
> > 2.6u2.
> > The latest nightly build (2.7a1) contains a version of the netCDF library 
> > that
> > fixes
> > this bug.  You can get the nightly build at:
> >
> > http://www.unidata.ucar.edu/downloads/idv/nightly
> >
> > It's pretty stable at this point.
> >
> > Don Murray
> >
> >> Full Name: Bill Capehart
> >> Email Address: address@hidden
> >> Organization: SDSMT-IAS
> >> Package Version: 2.6u2 build date:2009-02-13 19:03 UTC
> >> Operating System: Linux
> >> Hardware: Java: home: /usr/local/IDV_2.6u2/jre version: 1.6.0_07 j3d:1.5.2
> >> fcs (build4)
> >> Description of problem: On multiple platforms (Mac and Linux) we cannot
> >> convert the GFS hi-rez (0.5 degree global product) from GRIB1 to NETCDF.
> >>
> >> Error is below.
> >>
> >> Error writing local netcdf file.
> >> Data:/data/NCAR/GFS-HIREZ/ci_gribdata/2008/11/05/gfs_hirez_2008-11-05_12_f012
> >> .grib
> >> Variables:[Absolute_vorticity, Clear_Sky_UV-B_Downward_Solar_Flux,
> >> Cloud_water, Cloud_water_entire_atmosphere, Convective_precip_rate,
> >> Geopotential_height, Geopotential_height_tropopause, Ground_heat_flux,
> >> Ice_concentration_ice=1;no_ice=0, Ice_thickness, Land_cover_land=1;sea=0,
> >> Liquid_volumetric_soil_moisture_non-frozen, Ozone_mixing_ratio,
> >> Planetary_boundary_layer_height, Precipitable_water, 
> >> Pressure_reduced_to_MSL,
> >> Pressure_surface, Pressure_tropopause, Relative_humidity,
> >> Relative_humidity_entire_atmosphere, Relative_humidity_height_above_ground,
> >> Specific_humidity, Temperature, Temperature_height_above_ground,
> >> Temperature_surface, Total_cloud_cover,
> >> Total_cloud_cover_convective_cloud_layer,
> >> Total_cloud_cover_entire_atmosphere, Total_cloud_cover_high_cloud_layer,
> >> Total_cloud_cover_low_cloud_layer, Total_cloud_cover_middle_cloud_layer,
> >> Total_ozone, Total_precipitation, u_wind, u_wind_height_above_ground,
> >> Upward_long_wave_flux, Upward_long_wave_flux_surface, Upward_short_wa
> >  ve_flux, Upward_short_wave_flux_surface, UV-B_Downward_Solar_Flux, v_wind,
> > v_wind_height_above_ground, Volumetric_soil_moisture, Water_runoff]
> >> java.lang.NullPointerException
> >>
> >> ******************
> >> Stack trace:
> >> java.lang.NullPointerException
> >> at ucar.nc2.dt.grid.NetcdfCFWriter.makeFile(NetcdfCFWriter.java:170)
> >> at ucar.nc2.dt.grid.NetcdfCFWriter.makeFile(NetcdfCFWriter.java:74)
> >> at
> >> ucar.unidata.data.grid.GeoGridDataSource.saveDataToLocalDisk(GeoGridDataSourc
> >> e.java:802)
> >> at
> >>
> ucar.unidata.data.DataSourceImpl.saveDataToLocalDisk(DataSourceImpl.java:2495>>
> )
> >> at
> >>
> ucar.unidata.data.DataSourceImpl.saveDataToLocalDisk(DataSourceImpl.java:2462>>
> )
> >> at
> >> ucar.unidata.data.grid.GeoGridDataSource$1$1.run(GeoGridDataSource.java:609)
> >> at ucar.unidata.util.Misc$3.run(Misc.java:1038)
> >>
> >>
> >>
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: RJX-162617
> > Department: Support IDV
> > Priority: Normal
> > Status: Open
> >
> 
> 
> ================================================================
> Bill Capehart <address@hidden>   Associate Professor
> Institute of Atmospheric Sciences         Land Surface Processes
> 213 Mineral Industries Building                 Hydrometeorology
> South Dakota School of Mines and Technology Ph:  +1-605-394-1994
> 501 East Saint Joseph Street                Fax: +1-605-394-6061
> Rapid City, SD 57701-3995                Mobile: +1-605-484-5692
> =================== http://capehart.sdsmt.edu ==================
> 
> 
> 
> 


Ticket Details
===================
Ticket ID: RJX-162617
Department: Support IDV
Priority: Normal
Status: Open