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[GEMPAK #PVG-756937]: problems decoding ship soundings



Greg-

> I'm still having trouble with this. I  added the -a 50 and I do
> indeed now get the 00 UTC JCCX ob. However, I don't seem to be able to
> get the 12 UTC ob from this same station. I see the text message come
> across but it doesn't appear in the decoded file. I even tried adding
> the second station table with the -S option (ship sounding table -
> JCCX is in it) but this did not seem to have any effect. What else do
> I need? Is there a setting that would decode all soundings sent to
> dcuair whether they are in a station table or not? I'd like to get all
> available soundings not just -a XX.

I think it's that there are other stations being added as well and
since each ob ends up with a new ID, you need something more like
-a 100.  Since -a 25 didn't pick up the 00Z ob (needed at least 29
for my test), you'd end up with more than 50 obs being added if
there were reports for only 00 and 12.  I'm sure some ships are
reporting intermediate hours as well.

Can you send me your  ship station table so I can run some tests?

Thanks.

Don Murray
> Thanks,
> Greg
> 
> On Aug 22, 2008, at 3:55 PM, Unidata GEMPAK Support wrote:
> 
> > Hi Greg-
> >
> >> I'm trying to use gempak to look at some ship soundings for a project
> >> we are currently supporting. The ship is JCCX and is doing launches
> >> at
> >> 00 at 12 UTC. I have our ldm set up to decode these incoming messages
> >> with dcuair (We are running gempak 5.11.1). Below is the code from
> >> our
> >> pqact.conf file set up for this:
> >>
> >> #
> >> # upper air reports
> >> #
> >> WMO     ^U[ABCDEFGHIJKLMNPQRSTWXY]
> >> PIPE    dcuair -b 24 -m 16
> >> -d logs/dcuair.log
> >> -e GEMTBL=/home/gempak/NAWIPS/gempak/tables
> >> -s snstns.tbl
> >> data/gempak/upperair/uaYYYYMMDD.gem
> >>
> >> Our ldm is also capturing the coded message as text as well. Here's
> >> the problem: We are receiving the coded message soundings for this
> >> ship but they do not seem to appear in our decoded gempak file.
> >> Here's
> >> one of today's coded messages from this ship:
> >>
> >> USVX01 RJTD 220000
> >> UUAA JCCX 72001 99315 11279 13217
> >> 99004 28418 20015 00042 28022 19516 92731 22602 22033 85466 18610
> >> 22032 70117 11456 22527 50585 05165 26536 40757 14127 23027 30970
> >> 28129 28031 25098 37545 28014 20248 505// 29019 15429 653// 33039
> >> 10668 771// 01036
> >> 88103 783// 34533
> >> 77999
> >> 31313 47908 82330 90294=
> >>
> >>
> >> What am I doing wrong?
> >
> > You need to use the -a option to set the number of extra stations
> > to add.  The default of 25 is apparently not enough to get all the
> > other additional stations, plus JCCX.  If I decode just the
> > 00Z obs from the IDD, -a 25 doesn't  get JCCX, but -a 30 does.
> > I'd set it to be 40 just to be safe.
> >
> > Also, the id will be JCCXnn where nn is the synoptic hour of the
> > report.
> >
> > Don Murray
> >
> > Ticket Details
> > ===================
> > Ticket ID: PVG-756937
> > Department: Support GEMPAK
> > Priority: Normal
> > Status: Open
> >
> 
> -----------------------------------------------------------
> Greg Stossmeister
> NCAR/Earth Observing Laboratory (EOL)
> Telephone: (303)497-8692  Facsimilie:(303)497-2044
> e-mail: address@hidden
> Mailing Address:          Shipping Address:
> NCAR/EOL                    UCAR Foothills Lab 1
> P.O. Box 3000               3450 Mitchell Ln
> Boulder, CO 80307      Boulder, CO 80301
> ------------------------------------------------------------
> 
> 
> 
> 
> 


Ticket Details
===================
Ticket ID: PVG-756937
Department: Support GEMPAK
Priority: Normal
Status: Open