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How to Ingest and Display Point Observation Data and Products into GEMPAK

How to Ingest and Display Point Observation Data and Products into GEMPAK

  • GEMPAK can display lightning, wind profiler, ACARS, SuomiNet, and other point observation data from local disk.
  • How to set up your GEMPAK LDM configuration files

  • The GEMPAK distribution includes a template script that will have the most current actions included. To see more information regarding this process vistit the GEMPAK documentation about this topic.
  • The information below is only an example of how the ldmd.conf and pqact.conf files may look. Your paths and actions may differ, but the information below should give a general idea on the process as well as descriptions and explanations of some of the terms.

    ldmd.conf

  • How to request lightning, wind profiler, ACARS, SuomiNet point observation data via the LDM
  • ldmd.conf example entry:

    ########################################
    # Request Entries
    ########################################
    #
    # LDM servers request data from Data Sources
    #

    (request) (feedset|feedset)(pattern) (hostname pattern)
    request FSL2|GPS ".*" idd.unidata.ucar.edu [sample host pattern, yours may differ]
    request NLDN ".*" host.host.edu (NLDN is a propriatary feed and Unidata will facilitate connection)
  • wind profiler and ACARS are in the FSL2 feedtype, lightning is in the NLDN feedtype, SuomiNet is in the GPS feedtype
  • For more information regarding the WMO feed and other feedtypes, please visit: Feedtypes

    pqact.conf

  • How to "act" on the data once it is on disk in the LDM queue
  • Reminder..ALL spaces in the pqact.conf file need to be (tabs)!
  • pqact.conf example entries:
    ################################################################################
    # GEMPAK Point source decoders
    #
    # NLDN lightning data
    NLDN    .*
            PIPE    decoders/dcnldn -m 25000 -b 30 -s minute05
            -d data/gempak/logs/dcnldn.log
            -e GEMTBL=/home/gempak/NAWIPS/gempak/tables
            data/gempak/nldn/YYYYMMDDHHNN_nldn.gem
    
    # FSL NetCDF Wind Profiler FSL2 ^FSL\.NetCDF\.NOAAnet\.(windprofiler|RASS)\.(01hr)\. PIPE -close decoders/dcncprof -l data/gempak/logs/dcncprof.log -e GEMTBL=/home/gempak/NAWIPS/gempak/tables data/gempak/profiler/YYYYMMDD_pro.gem
    FSL2 ^FSL\.NetCDF\.NOAAnet\.(windprofiler|RASS)\.(06min)\. PIPE -close decoders/dcncprof -l data/gempak/logs/dcncprof.log -e GEMTBL=/home/gempak/NAWIPS/gempak/tables data/gempak/profiler/YYYYMMDD_6min.gem
    # FSL ACARS data PCWS ^FSL\.NetCDF\.ACARS\.QC PIPE -close decoders/dcacars -e GEMTBL=/home/gempak/NAWIPS/gempak/tables -l data/gempak/logs/dcacars.log data/gempak/acars/YYYYMMDDHH_acars.gem
    PCWS ^FSL\.CompressedNetCDF\.MADIS\.acars\.(.*)\.gz PIPE -close decoders/dcgunzip decoders/dcacars -n data/madis/\1.nc -e GEMTBL=/home/gempak/NAWIPS/gempak/tables -l data/gempak/logs/dcacars.log data/gempak/acars/YYYYMMDDHH_acars.gem
    # Suominet data #GPS ^TEST GPS suoHWV.*nc$ PIPE -close decoders/dcsuomi -d data/gempak/logs/dcsuomi.log -e GEMTBL=/home/gempak/NAWIPS/gempak/tables data/gempak/gps/YYYYMMDD_oldsuomi.gem # GPS CsuPWVh.*nc$ PIPE -close decoders/dcsuomi -d data/gempak/logs/dcsuomi.log -e GEMTBL=/home/gempak/NAWIPS/gempak/tables data/gempak/gps/YYYYMMDD_suomi.gem

    GEMPAK Home Page

    If you have additional questions they should be directed to:
    support-gempak@unidata.ucar.edu
     
     
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