19990506: LDM - dcgrib errors with ETA data

Michale,

ETA, NGM, MRF, AVN are available on several projections. The common
CONUS projection is called the #211 grid. When a gempak file is created,
the projection of the first grid is used to create the file. If another grid
comes alon and doesn't match the projection, you get the message below.

In this case, grid #207 is an alaskan sector. When we went to NOAAport
for our data, you started getting a lot more projections. You will see
that gdinfo will list the projection information of the file. 
You'll also notice in your logs below, the 3rd letter is the grid projection
and there are several different projections.
You can specify the projection you want by making your pqact.conf pattern a 
little tighter.

For ETA and NGM, you probably want CONUS #211, which is grid Q and the pattern
HDS     ^[YZ].Q.*/mETA
HDS     ^[YZ].Q.*/mNGM

Attatched below  is a pqact.conf example which tells which projections for each 
model
are represented by that 3rd letter in the WMO identifier.

Steve Chiswell
Unidata User Support


# NMC GRIB products
#
#
# NOAAport ETA grids
# Grid #211 80km CONUS:    ^[YZ].Q.*/mETA
# Grid #212 40km CONUS:    ^[YZ].R.*/mETA
# Grid #215 20km CONUS:    ^[YZ].U.*/mETA
# Grid #214 47.5km Alaska: ^[YZ].T.*/mETA
# Select any/all grids desired from [QRUT]
HRS     ^[YZ].[Q].*/mETA
        PIPE    /usr/local/ldm/decoders/dcgrib -v -d data/gempak/logs/dcgrib.log
                -g /home/gempak/NAWIPS-5.4/gempak5.4/tables
                PACK data/gempak/hds/YYYYMMDDHH_eta_grid@@@.gem
#
# NOAAport MRF grids
# Grid #201 N. Hemisphere 381km: ^Y.A... KWBH
# Grid #202 CONUS         190km: ^Y.I... KWBH
# Grid #203 Alaska        190km: ^Y.J... KWBH
# Grid #204 Hawaii        160km: ^Y.K... KWBH
# Grid #205 Puerto Rico   190km: ^Y.L... KWBH
# Select any/all grids desired from [AIJKL]
HRS     ^Y.[AIJKL]... KWBH
        PIPE    /usr/local/ldm/decoders/dcgrib -d data/gempak/logs/dcgrib.log
                -g /home/gempak/NAWIPS-5.4/gempak5.4/tables
                PACK data/gempak/hds/YYYYMMDDHH_mrf_grid@@@.gem
#
#
# RUC/MAPS model output
# Grid #211 CONUS   80km: ^[YZ].Q.*/mRUC
# Currently, only grid #211
HRS     ^[YZ].[Q].*/mRUC
        PIPE    /usr/local/ldm/decoders/dcgrib -v -d data/gempak/logs/dcgrib.log
                -g /home/gempak/NAWIPS-5.4/gempak5.4/tables
                PACK data/gempak/hds/YYYYMMDDHH_ruc_grid@@@.gem
#
# NGM model output
# Grid #211 CONUS   80km: ^[YZ].Q.*/mNGM
# Grid #207 Alaska  95km: ^[YZ].N.*/mNGM
# Grid #202 CONUS  190km: ^[YZ].I.*/mNGM
# Grid #213 CONUS 47.5km: ^[YZ].H.*/mNGM
# Select any/all grids desired from [QNIH]
HRS     ^[YZ].[QNIH].*/mNGM
        PIPE    /usr/local/ldm/decoders/dcgrib -d data/gempak/logs/dcgrib.log
                -g /home/gempak/NAWIPS-5.4/gempak5.4/tables
                PACK data/gempak/hds/YYYYMMDDHH_ngm_grid@@@.gem
#
# AVN model output
# Grid #201 N. Hemisphere 381km: ^Y.A... KWBC.*(/mAVN|/mSSIAVN)
# Grid #202 CONUS         190km: ^Y.I... KWBC.*(/mAVN|/mSSIAVN)
# Grid #203 Alaska        190km: ^Y.J... KWBC.*(/mAVN|/mSSIAVN)
# Grid #211 CONUS          80km: ^Y.Q... KWBC.*(/mAVN|/mSSIAVN)
# Grid #213 CONUS          95km: ^Y.H... KWBC.*(/mAVN|/mSSIAVN)
# Select any/all grids desired from [QAIJH]
HRS     ^[YZ].[QAIJH]... KWB. ([0-3][0-9])([0-2][0-9]).*(/mAVN|/mSSIAVN)
        PIPE    /usr/local/ldm/decoders/dcgrib -d data/gempak/logs/dcgrib.log
                -g /home/gempak/NAWIPS-5.4/gempak5.4/tables
                PACK data/gempak/hds/YYYYMMDDHH_avn_grid@@@.gem
#
# Global AVN (Spectral) Thinned grids
# Grid octets I-P will be stitched togethir as a single global grid
#
HRS     ^H.[I-P]... KWB. ([0-3][0-9])([0-2][0-9]).*
        PIPE    /usr/local/ldm/decoders/dcgrib -d data/gempak/logs/dcgrib.log
                -g /home/gempak/NAWIPS-5.4/gempak5.4/tables
                -q"lin,dlat=2.5,dlon=2.5"
                PACK data/gempak/hds/YYYYMMDDHH_thin.gem
#
#  MRF grids - Extended range grids E and F
#
HRS     ^H.[EF][A-Z][0-9][0-9] KWB. ([0-3][0-9])([0-2][0-9])..
        PIPE    /usr/local/ldm/decoders/dcgrib -d data/gempak/logs/dcgrib.log
                -g /home/gempak/NAWIPS-5.4/gempak5.4/tables
                PACK data/gempak/hds/YYYYMMDDHH_mrf.gem
#






>From: Michael Voss <address@hidden>
>Organization: .
>Keywords: 199905052241.QAA09196

>Hello,
>I'm running LDM and generating Gempak files with 'dcgrib' out of the pqact.con
> f file. This has worked fine for awhile, but recently I have had problems wit
> h the gridded ETA model data (NGM, MRF, etc come in fine). I have made no cha
> nges to pqact.conf for months.
>
>The following shows a snippet from our ldmd.log:
>
>May 05 15:02:02 vortex dcgrib[2895]: YUQD45 KWBF 051200 OK
>May 05 15:02:03 vortex dcgrib[2895]:  Invalid center id/grid id combination:  
> 7  207  0  28  23
>May 05 15:02:03 vortex dcgrib[2895]: YUND45 KWBF 051200 skipped
>May 05 15:02:03 vortex dcgrib[2895]:  Invalid center id/grid id combination:  
> 7  202  0  28  23
>May 05 15:02:03 vortex dcgrib[2895]: YUID40 KWBF 051200 skipped
>May 05 15:02:03 vortex dcgrib[2895]: YUQD40 KWBF 051200 OK
>May 05 15:02:03 vortex dcgrib[2895]:  Invalid center id/grid id combination:  
> 7  207  0  28  23
>May 05 15:02:03 vortex dcgrib[2895]: YUND40 KWBF 051200 skipped
>May 05 15:02:03 vortex dcgrib[2895]:  Invalid center id/grid id combination:  
> 7  202  0  28  23
>May 05 15:02:03 vortex dcgrib[2895]: YUID35 KWBF 051200 skipped
>
>Here is my pqact.conf entry:
>
>        PIPE    /usr/local/gempak/bin/sol/dcgrib -v
>        -g /usr/local/gempak/gempak5.4/tables
>        PACK /usr/local/gempak/gempak5.4/data/grids/(\1:yy)(\1:mm)\1\2_eta.gem
>
>Might there be a simple explanation for this? 
>
>Thanks,
>Mike
>
>
>
>--------------------------------------------------------------
>Michael Voss                             address@hidden
>Department of Meteorology               www.innetix.com/~voss
>San Jose State University                        (408)924-5204
>One Washington Square                              fax (408)924-5191        
>San Jose, CA 95192-0104                
>--------------------------------------------------------------
>