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20000228: Using GDTHGT and 29 February

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  • Subject: 20000228: Using GDTHGT and 29 February
  • Date: Mon, 28 Feb 2000 17:04:37 -0700
James,

The gdthgt time lables and axes appears to be fixed in the next 6.0 release.

Regarding the EGRR grids, you mention the 6-36 hour period. Are you seeing AVOR 
at 0, 48 or 72 hours? I don't see that they are broadcasting AVOR for any times.
They only seem to send the basic state grids- and omega.

Presumably, you can calculate AVOR from the winds.

Steve Chiswell




>From: James Murakami <address@hidden>
>Organization: .
>Keywords: 200002282258.PAA21049

>Hi:
>
>The solution to this problem is probably academic (for
>realtime application), but I can't run GDTHGT whenever
>the period includes 29 February. I get a "[GDTHGT -4]
>Invalid vertical coordinate" statement (a Segmentation 
>fault occurs too), but I'm sure the leap year date has
>something to do with it. I can run the program if the
>time period doesn't include 29 February. 
>
>It would be nice to correct this problem if someone
>wants to do a cross section for a case study in the
>future.
>
>Oh, one other thing (not related to the above).
>I don't seem to be picking up all output for UKMET
>grib data. For example, the GEMPAK decoded files don't
>include 500 mb absolute vorticity from hours 6 through
>36. My pqact.conf is as follows--
>
>HRS    ^H.[I-P][A-K].. EGRR
>       PIPE    /unidata/ldm/gempak/bin/dcgrib -v
>       -d /gempak/logs/dcgrib.log
>       -g /unidata/ldm/gempak/gempak5.4/tables
>       -q"lin,dlat=2.5,dlon=2.5"
>       PACK /gempak/data/hrs/YYYYMMDDHH_ukmet.gem
>
>Do I need to modify or did the National Weather Service
>intentionally omit these files (don't know why they would 
>though).
>
>James Murakami
>
>
>--------------------------------------
>James Murakami
>Staff Meteorologist/Student Affairs
>Department of Atmospheric Sciences
>University of California, Los Angeles
>405 Hilgard Ave.
>Los Angeles, CA  90095-1565
>
>
>   e-mail:  address@hidden
>telephone:  310-825-2418
>      Fax:  310-206-5219
>---------------------------------------
>