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

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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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