-------- Original Message --------
936
NOUS41 KWBC 152114
PNSWSH
Technical Implementation Notice 11-18, Amended
National Weather Service Headquarters Washington DC
415 PM EST Thu Nov 15 2012
To: Subscribers:
- Family of Services
- NOAA Weather Wire Service
- Emergency Managers Weather Information Network
- NOAAPORT
Other NWS partners, users and NWS employees
From: Tim McClung
Science Plans Branch Chief
Office of Science and Technology
Subject: Amended: Addition of Gridded Localized Aviation Model
Output Statistics Program (GLMP) Products to NOAAPORT:
Effective Monday, December 17, 2012
Amended to reschedule the addition of products that had been
delayed and to announce the addition of super headers within the
GLMP forecast grids.
Effective Monday, December 17, 2012, beginning with the 1800
Coordinated Universal Time (UTC) run, NWS will transition the
experimental GLMP products to operational status, at which time
the products will be disseminated on the SBN, NOAAPORT, and will
be available in the operational National Digital Guidance
Database (NDGD).
On August 22, 2011, NWS changed the experimental GLMP products
for the contiguous United States (CONUS). The following changes
to the experimental data occurred:
1. Products include WMO headers in anticipation of the transition
to operations
2. Products are encoded with binary scaling to produce
smaller files
3. Special value to designate "unlimited ceiling height or
ceiling height" > 12,000 feet changed from the current
value of -1 to the new value of -100
The Gridded LAMP products contain guidance on a 2.5 km
Lambert Conformal grid covering the same expanse as the National
Digital Forecast Database (NDFD) CONUS grid. Grids are generated
hourly consisting of gridded forecasts for projections of 1 to 25
hours in advance as well as gridded observations for the initial
time of the Gridded LAMP cycle. Grids will be available for the
following elements with others to be added later:
2-meter temperature observations and the associated error
estimations
2-meter dewpoint temperature observations and the associated
error estimations
Ceiling height observations
Visibility observations
2-meter temperature forecast guidance
2-meter dewpoint temperature forecast guidance
Ceiling height forecast guidance
Visibility forecast guidance
The products are available in GRIB2 format and are currently
available in the experimental NDGD. They are available on the NWS
server at:
ftp://tgftp.nws.noaa.gov/SL.us008001/ST.expr/DF.gr2/DC.ndgd/GT.lm
pgfs/AR.conus
or
http://weather.noaa.gov/pub/SL.us008001/ST.expr/DF.gr2/DC.ndgd/GT
.lmpgfs/AR.conus
Effective on Monday, December 17, 2012, beginning with the 1800
Coordinated Universal Time (UTC) run, the products will be
available in GRIB2 format in the operational NDGD, and will no
longer be available in the experimental NDGD. They will be
available on the NWS server at:
ftp://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndgd/GT.gl
mp/AR.conus
or
http://weather.noaa.gov/pub/SL.us008001/ST.opnl/DF.gr2/DC.ndgd/GT
.glmp/AR.conus
A web page outlining the Gridded LAMP products and the NWS server
directory and file structure can be found online at:
http://www.nws.noaa.gov/mdl/gfslamp/docs/glmpinfo.php
The new communication identifiers for the GRIB2 products are
shown below in Tables 1 and 2. The GRIB2 files for the GLMP
gridded observation products will continue to contain WMO
headers. The GRIB2 files for the GLMP gridded forecast products
will continue to contain WMO headers, but will also contain super
headers. A complete list of GLMP WMO headings is available at
http://www.nws.noaa.gov/mdl/gfslamp/docs/glmpheaders.pdf
Table 1: Communication identifiers for the GLMP gridded
observation products in GRIB2 format. Listed below are
representations of the WMO headings. Here xx represents the valid
UTC hour (00-23).
WMO HEADING ELEMENT
----------- -------
LAUAxx KMDL 2-meter gridded temperature observations
LAUBxx KMDL 2-meter gridded temperature observation
error estimations
LBUAxx KMDL 2-meter gridded dewpoint temperature
observations
LBUBxx KMDL 2-meter gridded dewpoint temperature
observation error estimations
LCUAxx KMDL Gridded ceiling height observations
LDUAxx KMDL Gridded visibility gridded observations
Table 2: Communication identifiers for the GLMP gridded forecast
products in GRIB2 format. Listed below are representations of the
WMO headings: xx represents the forecast projection (01-25).
WMO SUPER HEADER WMO HEADING ELEMENT
---------------- ----------- -------
LKUZ98 KMDL LKUAxx KMDL Gridded 2-meter temperature
forecasts
LLUZ98 KMDL LLUAxx KMDL Gridded 2-meter dewpoint
temperature forecasts
LMUZ98 KMDL LMUAxx KMDL Gridded ceiling height
forecasts
LNUZ98 KMDL LNUAxx KMDL Gridded visibility forecasts
If you have technical comments or questions, please contact:
Judy Ghirardelli
National Weather Service
Meteorological Development Laboratory
Judy.Ghirardelli@xxxxxxxx
301-713-0056 x194
Links to the LAMP products and descriptions can found at:
http://www.nws.noaa.gov/mdl/gfslamp/gfslamp.shtml
National Public Information Statements are online at:
http://www.weather.gov/os/notif.htm
$$