20041217: 20041213: Using NAGRIB on grid #221

Luis,

Yes, its manual work. I created the ncarncep1.tbl table for
the reanalysis data sets previously.
You might find that that a good starting point to check
as to what is different in the #131 table.

See the phelp on GBTBLS in nagrib for specifying your own table.

Steve Chiswell
Unidata User Support





>From: address@hidden
>Organization: UCAR/Unidata
>Keywords: 200412171604.iBHG4alI004078

>Steve,
>thanks for the information.
>
>Yes, the GRIB file I have is from the North American Regional Reanalysis
>that has been released by CDC/NCEP.
>
>I did contact Wesley Ebisuzaki and obtained the correct address for the
>table: ftp://ftpprd.ncep.noaa.gov/pub/cpc/wd51we/wgrib/nceptab_131
>This table contains data with (approximately) 255 variables, 
>including names and units.
>
>Now, this table has a different format that those in $GEMTBL/grid* and
>this seems to be suggest manual work to have the data in that format.
>Once this is done, I should be able to perform the conversion from
>GRIB into a gridded file for handling with the NAGRIB program of GEMPAK.
>
>Please let me know if I am in the right track and, if this is available,
>any code recommended to simplify the table format conversion.
>
>Luis M Farfan.
>
>* For example: ncarncep1.tbl, wmogrib2.tbl, ncepgrib2.tbl, etc.
>
>
>Quoting Unidata Support <address@hidden>: 
>> Luis,
>> 
>> Apparently one of the GRIB products you have is using
>> a table 131. Using the GBDIAG parameter for PDS would show
>> you which parameter numbers are beingused for the table 131.
>> 
>> The NWS site that provides the NWS local table definitions does
>> not show any updates past table 130:
>> http://www.nco.ncep.noaa.gov/pmb/docs/on388/table2.html
>> 
>> However I do find that NCDC references table 131 for reanalysis
>> data rather than the current tables 2, 3, 129 and 130 that we see
>> for realtime data::
>> http://www.ncdc.noaa.gov/oa/documentlibrary/pdf/tddoc/td6175.pdf
>> 
>> If you file is reanalysis data, then that document will direct you to
>> the parameter definitions that you would need to create the 131 version 
>> tables for your data set::
>> ftp://wesley.ncep.noaa.gov/pub/wgrib/nceptab_131
>> I tried that ftp site this morning and didn't get connected, so you'd
>> have to verify that information yourself.
>> 
>> 
>> Steve Chiswell
>> Unidata User SUpport
>> 
>> 
>> 
>> >From: address@hidden
>> >Organization: UCAR/Unidata
>> >Keywords: 200412140143.iBE1helI006495
>> 
>> >Steve,
>> >I am trying to use the gempak program "nagrib" to convert gridded
>> >data from a GRIB into a GEMPAK file. Since the input file is in 
>> >the AWIPS grid #221, I set  CPYFIL   = #221. However, I find 
>> >some problems like the following:
>> >
>> >GEMPAK-NAGRIB> GEMPAK-NAGRIB> Changing center table to cntrgrib1.tbl
>> > Changing vertical coord table to vcrdgrib1.tbl
>> > Changing WMO parameter table to wmogrib131.tbl
>> > [NA -1]  The table wmogrib131.tbl cannot be opened.
>> > [NA -1]  The table wmogrib131.tbl cannot be opened.
>> >
>> >         1 GRIB messages were read or scanned from the GRIB file:
>> >     20030913_1200_hght_500.grib
>> >
>> >         0 grids were written to the GEMPAK file:
>> >     20030913_1200_hght_500.gem
>> >
>> > Parameters requested:
>> GBFILE,INDXFL,GDOUTF,PROJ,GRDAREA,KXKY,MAXGRD,CPYFIL,
>> > GAREA,OUTPUT,GBTBLS,GBDIAG,PDSEXT.
>> >
>> >I do not see "wmogrib131.tbl" in the directory $GEMTLB/grid and this makes
>> me
>> >think that something is not right with the definition of the grid
>> parameters. 
>> >Are you able to provide some assistance to successfully convert this file?
>> >
>> >Thanks, Luis M Farfan.
>> >
>> --
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>
>
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