NOUS41 KWBC
211820
PNSWSH
Technical
Implementation Notice 11-34
National Weather
Service Headquarters, Washington, DC
220 PM EDT Thu
Jul 21 2011
To: Subscribers:
-Family of Services
-NOAA Weather Wire Service
-Emergency Managers Weather
Information Network
-NOAAPORT
Other NWS Partners, Users and
Employees
From: Geoff DiMego
Chief, Mesoscale Modeling Branch
NCEP/Environmental Modeling Center
Subject: Termination of NCEP’s Regional Spectral
Model for
Hawaii: Effective September 13, 2011
Effective
Tuesday, September 13, 2011, with the 1200 Universal
Coordinated Time
(UTC) cycle, the National Centers for
Environmental
Prediction (NCEP) will stop running the Regional
Spectral Model
(RSM) for Hawaii and discontinue all output
products from
this model run.
A Public
Information Statement was issued on May 23, 2011,
requesting comments
on the proposed termination of the RSM for
Hawaii. Please
see:
http://www.weather.gov/os/notification/pns11rsm_removal.htm
Based on the
responses received, the decision was made to
terminate the RSM
run and associated output products for Hawaii.
The RSM is a
hydrostatic limited-area atmospheric model using a
spectral method
for horizontal advection. It is run to 48 hours
twice daily over
Hawaii with an equivalent grid spacing of 10 km
on 42
levels.
The table below
lists characteristics of the RSM and other
current, and
imminent, NCEP Operational Products, all of which
are based on
nonhydrostatic dynamics, and all of which provide
similar or better
guidance than the Hawaii RSM. More details
about the exact
grids and products available for each of the
items listed in
the table below are available at:
http://www.nco.ncep.noaa.gov/pmb/changes/rsm_removal.shtml
Product Runs/day Range Resolution Grid
RSM 2 48hr 10 km/42lev see URL above
NAM 4 84hr 12 km/60lev grid #182
NAM nest* 4 60hr 3 km/60lev grid #196
HiResWindow
WRF-ARW 2 48hr 5 km/35lev see URL above
WRF-NMM 2 48hr 4 km/35lev see URL above
* NAM nest is
planned for implementation in August or September
2011. See NWS TIN 11-16 for more details on the NAM nest.
If you have
questions about this termination, please contact:
Geoff DiMego
NWS/NCEP Environmental Modeling Center
Camp Springs, MD
or
Rebecca Cosgrove
NWS/NCEP Central Operations
Camp Spring, MD
National Public
Information Statements are online at:
http://www.weather.gov/os/notif.htm
$$
NNNN
|