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[GEMPAK #UJS-521089]: lightning data

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  • Subject: [GEMPAK #UJS-521089]: lightning data
  • Date: Tue, 21 Jun 2011 12:24:14 -0600


USPLN lightning data are available but a few important steps must be made.  If 
you're only insterested in decoding an individual file you can skip to 2), but 
if you would like to ingest and decode the data continuously begin here:

1) USPLN files can be decoded with the following pattern action added to 
~ldm/etc/pqact.conf

# USPLN
LIGHTNING       GLN
        PIPE    decoders/dcuspln -m 25000 -b 30 -s minute05
        -d data/gempak/logs/dcuspln.log
        -e GEMTBL=/home/gempak/NAWIPS/gempak/tables
        data/gempak/uspln/YYYYMMDDHHNN_uspln.gem

But you must confirm that your ~ldm/etc/ldmd.conf REQUEST line specifically 
asks for the USPLN data:

# USPLN/NAPLN
request LIGHTNING       "LN1"   upstream_feed_host

You must confirm that the upstream feed has the data available, which you do 
with 'notifyme' as the ldm user:

notifyme -vl- -f EXP -o 10000 -h upstream_feed_host

This will report data available from the host from the specified feed - You 
*must* be able to see data available via this notifyme command (with the 
appropriate hostname added) in order to use the host. 

2) Individual USPLN files can be decoded using the same syntax as the pattern 
action above (using the supplied dat file as an example):

dcuspln -m 2500 -b 30 -s minute05 -e GEMTBL=/home/gempak/NAWIPS/gempak/tables 
./YYYYMMDDHHNN_uspln.gem < UOA60-ltg-2011_06_18_18_01_00.dat

check with SFLIST:

GEMPAK-SFLIST>
 SFFILE   = 201106181700_uspln.gem
 AREA     = dset
 DATTIM   = all
 SFPARM   = sgnl
 OUTPUT   = T
 IDNTYP   = STID
GEMPAK-SFLIST>r

 PARM = SGNL                                                                    
 

    STN    YYMMDD/HHMM      SGNL
      -    110618/1700     -2.30
      -    110618/1700     -2.60
      -    110618/1700     -1.50
      -    110618/1700     -2.40
      -    110618/1700     -3.10
      -    110618/1700     -6.40
      -    110618/1700     -7.10
      -    110618/1700     -3.10
      -    110618/1700    -12.80
      -    110618/1700     -2.50
      -    110618/1700     -3.00
      -    110618/1705     -2.60
      -    110618/1705     -2.40
      -    110618/1705     -3.40
      -    110618/1705     -2.90
      -    110618/1705     -1.60
      -    110618/1705     -3.70
      -    110618/1705     -1.80
      -    110618/1705     -1.70
      -    110618/1705     -4.00
      -    110618/1705     -5.40
      -    110618/1705     -2.00
      -    110618/1710     -1.60
      -    110618/1710     -2.20
      -    110618/1710     -1.90
      -    110618/1720     -2.00

now plot with SFMAP:

GEMPAK-SFMAP>
 AREA     = dset
 GAREA    = -90;-180;90;180
 SATFIL   =  
 RADFIL   =  
 IMCBAR   =  
 SFPARM   = mark
 DATTIM   = first
 SFFILE   = 201106181700_uspln.gem
 COLORS   = 3
 MAP      = 1
 MSCALE   = 0
 LATLON   =  
 TITLE    = ~ ^ @
 CLEAR    = y
 PANEL    = 0
 DEVICE   = XW
 PROJ     = ced
 FILTER   = no
 TEXT     = 1.2/23/1/hw
 LUTFIL   =  
 STNPLT   =  
 CLRBAR   =  
 LSTPRM   =  
GEMPAK-SFMAP>r

You should see a global plot with green lightning stroke markers located across 
western Turkey.

Let me know if you run into any problem or have further questions.


Michael James
Unidata



Ticket Details
===================
Ticket ID: UJS-521089
Department: Support GEMPAK
Priority: Normal
Status: Open