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