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20000720: ukmogrib3.tbl file

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  • Subject: 20000720: ukmogrib3.tbl file
  • Date: Thu, 20 Jul 2000 10:14:40 -0600
Art,

When the decoder tries to decode the grib product, it uses ths edition number
in the grib (3 in this case) to define the two parameter tables:
wmogrib3.tbl for parameter numbers 1-127, and the center specific table
ukmogrib3.tbl for parameters 128-255. In this case, you get the log message
since the ukmogrib3.tbl file doesn't exist.

However, unless ukmet includes a locally defined parameter in their grib's,
then the 128-255 numbers are not used. I haven't seen that they are providing
anything other that WMO defined parameters. So, the missing table is just a 
warning.
You would get another error message giving the level, time, parameter center 
and edition
if a parameter is not able to be identified.

You can eliminate the log messages by touching  $GEMTBL/grid/ukmogrib3.tbl
as a zero length file. At this point, there are no defined 128-255 parameters 
for
ukmogrib3.tbl that are being broadcast. 

Steve Chiswell



>From: "Arthur A. Person" <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200007201436.e6KEaBT00736

>Hi...
>
>I'm trying to decode the UKMet GRIB stuff and get the following error when
>the decoder runs:
>
> Changing center table to cntrgrib1.tbl
> Changing vertical coord table to vcrdgrib1.tbl
> Changing WMO parameter table to wmogrib3.tbl
> Changing center parameter table to ukmogrib3.tbl
> [NA -1]  The table ukmogrib3.tbl cannot be opened.
>
>I looked on the gbuddy ftp site but couldn't find the file anywhere.  Can
>you tell me how to get this or what the proper pqact command is?  I'm
>currently using:
>
># ukmet on grid 255
>HRS     ^H.[^I-P]... EGRR
>        PIPE    dcgrib -d data/gempak/logs/dcgrib.log
>                -g /opt1/gempak/NAWIPS/gempak5.4/tables
>                PACK data/gempak/hds/YYYYMMDDHH_egrr@@@.gem
># ukmet on thinned grids
>HRS     ^H.[I-P]... EGRR
>        PIPE    dcgrib -d data/gempak/logs/dcgrib.log
>                -g /opt1/gempak/NAWIPS/gempak5.4/tables
>                -q"lin,dlat=2.5,dlon=2.5"
>                PACK data/gempak/hds/YYYYMMDDHH_egrrwafs.gem
>
>                                      Thanks.
>
>                                        Art.
>
>Arthur A. Person
>Research Assistant, System Administrator
>Penn State Department of Meteorology
>email:  address@hidden, phone:  814-863-1563
>