[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

20030128: pqact.conf entries for mETA84 and ECMWF

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: 20030128: pqact.conf entries for mETA84 and ECMWF
  • Date: Tue, 28 Jan 2003 14:14:39 -0700
David,

The _ETA84 meta tag denotes ETA (ncep model number 84). Eg, the
84 has nothing to do with the forecast hours available.
In particulaar, the ETA files on NOAAPORT typically provide
through F060 for 0Z & 12Z, and through F048 for 6Z and 18Z.

The ETA on NOAAPORT is available on several different projections,
including:
# 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

The pattern you are using below would be for decoding the
20km grid #215 grids (which are mainly surface and boundary layer
parameters). Typically, I would suggest using dcgrib2 with the grid template
for the file name instead of dcgrib as you have below so that you wouldn't
have to reconfigure the GUI configurations. Eg:

HRS     ^[YZ].U.*/mETA
        PIPE    /software/nawips-5.6f/bin/sol/dcgrib2
        -e GEMTBL=/software/nawips-5.6f/gempak/tables
        -d /var/data/gempak/logs/dcgrib2.log
        /var/data/gempak/model/YYYYMMDDHH_eta@@@.gem

Otherwise, you are probably seeing the correct data in the file for eta215.


For the ECMWF data (which contains only a few parameters)

HRS    ^H[HPT][A-L][A-Z][0-9][0-9] ECMF ([0-3][0-9])([0-2][0-9])
        PIPE    decoders/dcgrib2 -d data/gempak/logs/dcgrib.log
        -e GEMTBL=@GEMTBL@
        data/gempak/model/YYYYMMDDHH_ecmf1.gem
#
HRS     ^H[UV][A-L][A-Z][0-9][0-9] ECMF ([0-3][0-9])([0-2][0-9])
        PIPE    decoders/dcgrib2 -d data/gempak/logs/dcgrib.log
        -e GEMTBL=@GEMTBL@
        data/gempak/model/YYYYMMDDHH_ecmf2.gem


Note, my pqact.conf examples are in the $NAWIPS/ldmdirectory
along with a script to generate the entries using your GEMTBL and
GEMPAK environmental variables.

Steve Chiswell



>From: David Fitzgerald <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200301281453.h0SErc610312

>Hello,
>
>I am having some problems decoding the 84 hour eta and the ECMWF.
>My pqact entry for the 84hour eta is:
>
>HRS    ^[YZ].U... KWB. ([0-3][0-9])([0-2][0-9]).*/mETA_84
>       PIPE    /software/nawips-5.6f/bin/sol/dcgrib
>               -g      /software/nawips-5.6f/gempak/tables
>               PACK    /var/data/gempak/hds/YYYYMMDDHH_eta84.gem
>
>Running gdinfo on the decoded file yields:
>   GRID FILE: /var/data/gempak/hds/2003012806_eta84.gem                       
>                                                                 
>
>   GRID NAVIGATION: 
>     PROJECTION:          LCC                 
>     ANGLES:                25.0   -95.0    25.0
>     GRID SIZE:          369 257
>     LL CORNER:              12.19   -133.46
>     UR CORNER:              57.29    -49.38
>
> GRID ANALYSIS BLOCK: 
>      UNKNOWN ANALYSIS TYPE 
>
> Number of grids in file:   901
>
> Maximum number of grids in file:   1500
>               
>
>Is there something wrong with my pqact entry?
>
>As for the ECMWF, here is my pqact entry:                      
>               
>HRS    ^H[UV][A-L]... ECMF ([0-3][0-9])([0-2][0-9])
>       PIPE    /software/nawips-5.6f/bin/sol/dcgrib
>               -g /software/nawips-5.6f/gempak/tables 
>               PACK /var/data/gempak/hds/YYYYMMDDHH_ecmwf2.gem         
>               
>and corresponding gdinfo on the output is:
>GRID FILE: /var/data/gempak/hds/2003012712_ecmwf2.gem                         
>                                                              
>
> GRID NAVIGATION: 
>     PROJECTION:          CED                 
>     GRID SIZE:          145  73
>     LL CORNER:             -90.00      0.00
>     UR CORNER:              90.00      0.00
>
> GRID ANALYSIS BLOCK: 
>      UNKNOWN ANALYSIS TYPE 
>
> Number of grids in file:    64
>
> Maximum number of grids in file:   1500
>
>
>Probably something easy but I can't find it. 
>
>Thanks!
>
>Dave
>               
>++++++++++++++++++++++++++
>David Fitzgerald   
>System Administrator             
>Millersville University  
>Millersville, PA 17551         
>Phone: (717) 871-2394
>Fax:   (717) 872-4725  
>E-mail: address@hidden
>