NOUS41 KWBC 152014
AAD
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.lmpgfs/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.glmp/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
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
$$