NOAA / NWS's Meteorological Development Laboratory
Degrib (NDFD GRIB2 Decoder)
Date: Thu, 24 Jul 2008 09:00:40 -0700 (PDT)
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program is on: (http://www.weather.gov/mdl/degrib).
The focus of release 1.92 is:
A) To handle the npacocn (North Pacific Ocean) sector which contains the
probabilistic hurricane wind product
B) To handle the "hazard" aka (wwa) grids.
C) To adjust to the change in operational status of sky, qpf, and snow
------- General News:
1) (http://www.nws.noaa.gov/om/notif.htm#tin) TIN08-34: PROBABILISTIC
TROPICAL CYCLONE SURFACE WIND SPEED ELEMENTS FOR THE NORTH PACIFIC OCEAN
TO BE ADDED TO THE NATIONAL DIGITAL FORECAST DATABASE /NDFD/ ON MAY 15
2008 AT 1200 UTC
2) (http://www.nws.noaa.gov/om/notif.htm#tin) TIN08-49: HAZARD ELEMENT
TO BECOME EXPERIMENTAL IN THE NATIONAL DIGITAL FORECAST DATABASE /NDFD/
ON JULY 08 2008 AT 1400 UTC
3) (http://www.nws.noaa.gov/om/notif.htm#tin) TIN08-50: QUANTITATIVE
PRECIPITATION...SKY COVER AND SNOW AMOUNT ELEMENTS TO BECOME OPERATIONAL
IN THE NATIONAL DIGITAL FORECAST DATABASE AT 1400 UTC
(Sorry about the delayed response time on these... finding time to work
on the Hazard element was challenging)
------- Details about release: 1.92 (last one was 1.91 on 4/2/2008)
1) Added support for the new sector "npacocn". Also configured the new
sector to expect tropical cyclone wind speed probabilities.
2) Updated the status of sky, snow, wwa, and qpf in response to the TIN.
3) Added support for hazards (aka wwa) to degrib. This is similar to
"Weather" (aka wx) in that there is a text string in section 2 referred
to from the grid. To support it, I needed to find all the times I'd
treated wx as a special case, and add a new special case for wwa.
We now have two new option "-SimpleWWA 0,1" (aka -SimpleVer, -SimpleWx)
and "-TxtParse" (aka -WxParse). The -SimpleWWA specifies which simple
hazard scheme to use (default to 1), and "-TxtParse" indicates whether
to provide the number, the WWA text, or the english translation of the
Support has been added to the ".flt" and ".shp" files, as well as the -I
option and the -P, -DP, -Data and -XML options. Support has NOT YET
been added for the ".nc" (netCDF) or ".csv" files.
4) Switched the MS-Windows installer from using the "Freeman" program to
using the "NSIS" program.
5) Updated the mapdef files for PR and cleaned them up for CONUS. The
PR sector had changed it specifications, before the last release. The
fix allows the "imageGen" software to draw it correctly.
6) Relabeled rtma-sky00 to rtma00-sky, etc in ndfd.ini to make it easier
to choose rtma for the 00 cycle (particularly in "tcldegrib web.tcl").
7) Modified the meta-name labels for PoP to allow for non 0.01 inch
thresholds in anticipation of possible NDGD elements such as PoP06-200
(6-h Prob. of Precip > 2.00 inch).
8) Fixed a branch cut issue with Mercator grids. Had used the
"orientation angle" as the "branch cut", instead of using lon1 and lon2
to determine a lon which was not on the grid.
9) Modified writeshp.c to always have a '\0' in the column headers in
the .dbf files, since ESRI appears to need it for names longer than 10 char.
10) Updated the meta-name tables based on NCEPs current web pages.
------- Please let me know if you have problems.
Note: I'm headed on vacation (to San Diego CA, then to the University of
Berkeley to visit my sister) for the next ten days, so I may be less
responsive than usual.