Re: [netcdf-java] Grib2Netcdf

• To: netcdf-java@xxxxxxxxxxxxxxxx
• Subject: Re: [netcdf-java] Grib2Netcdf
• From: John Caron <caron@xxxxxxxxxxxxxxxx>
• Date: Mon, 12 Dec 2011 11:57:19 -0700

Hi Kevin:

1) in general, use

java -Xmx512m -classpath netdfAll-<version>.jar ucar.nc2.dataset.NetcdfDataset 
-in<fileIn>  -out<fileOut>  [-isLargeFile]

see:

http://www.unidata.ucar.edu/software/netcdf-java/reference/Cookbook.html#writeClasssic

John

On 12/12/2011 10:44 AM, Kevin Manross wrote:

Greetings!

I have been using the utility ucar.nc2.iosp.grib.Grib2Netcdf in toolsUI-4.1 successfully to convert High Resolution Rapid Refresh (HRRR) GRIB2 files to netcdf-3.

When trying to use this utility in toolsUI-4.2, I am unable to write out the file:

[manross@albion HRRR]$ java -Xmx512m -classpath /mnt/home/manross/Programming/Java/toolsUI-4.2.jar ucar.nc2.iosp.grib.Grib2Netcdf hrrr_20111212-1200F0000.grib2 out_42.nc <http://out_42.nc>

Mon Dec 12 17:20:44 GMT 2011 ... Start of Grib2Netcdf

read grib file=hrrr_20111212-1200F0000.grib2 write to netCDF file=out_42.nc <http://out_42.nc>

Dec 12, 2011 5:20:44 PM ucar.nc2.iosp.grid.GridVariable makeVariable
WARNING: Duplicate record for hrrr_20111212-1200F0000.grib2

GribGridRecord{param=Total_precipitation, levelType1=1, levelValue1=0.0, forecastTime=0, pdsOffset=369269359} GribGridRecord{param=Total_precipitation, levelType1=1, levelValue1=0.0, forecastTime=0, pdsOffset=369268399}

Dec 12, 2011 5:20:44 PM ucar.nc2.iosp.grid.GridVariable makeVariable
WARNING: Duplicate record for hrrr_20111212-1200F0000.grib2

GribGridRecord{param=Water_equivalent_of_accumulated_snow_depth, levelType1=1, levelValue1=0.0, forecastTime=0, pdsOffset=369270079} GribGridRecord{param=Water_equivalent_of_accumulated_snow_depth, levelType1=1, levelValue1=0.0, forecastTime=0, pdsOffset=369269119}

Dec 12, 2011 5:20:44 PM ucar.nc2.iosp.grid.GridVariable makeVariable
WARNING: Duplicate record for hrrr_20111212-1200F0000.grib2

GribGridRecord{param=Convective_precipitation, levelType1=1, levelValue1=0.0, forecastTime=0, pdsOffset=369269599} GribGridRecord{param=Convective_precipitation, levelType1=1, levelValue1=0.0, forecastTime=0, pdsOffset=369268639}

Dec 12, 2011 5:20:44 PM ucar.nc2.iosp.grid.GridVariable makeVariable
WARNING: Duplicate record for hrrr_20111212-1200F0000.grib2

GribGridRecord{param=Large_scale_precipitation_non-convective, levelType1=1, levelValue1=0.0, forecastTime=0, pdsOffset=369269839} GribGridRecord{param=Large_scale_precipitation_non-convective, levelType1=1, levelValue1=0.0, forecastTime=0, pdsOffset=369268879} Exception in thread "main" java.lang.IllegalArgumentException: Variable starting pos=2164328984 may not exceed 2147483647

at ucar.nc2.iosp.netcdf3.N3header.writeHeader(N3header.java:671)
at ucar.nc2.iosp.netcdf3.N3header.create(N3header.java:602)
at ucar.nc2.iosp.netcdf3.N3iosp.create(N3iosp.java:641)
at ucar.nc2.NetcdfFileWriteable.create(NetcdfFileWriteable.java:605)
at ucar.nc2.FileWriter.writeToFile(FileWriter.java:225)
at ucar.nc2.FileWriter.writeToFile(FileWriter.java:96)
at ucar.nc2.iosp.grib.Grib2Netcdf.main(Grib2Netcdf.java:125)


Unfortunately, I can't even find the Grib2Netcdf utility in toolsUI-4.3.

Is this utility no longer available or supported? Is there anything like it in 4.3? If not, is there a chance that I could get this fixed in v4.2?

I'd be happy to supply the GRIB2 file if people want to test this.

Many thanks!!

-kevin.


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