NOUS41 KWBC 291830
PNSWSH
Technical Implementation Notice 12-40
National Weather Service Headquarters,
Washington, DC
230 PM EDT Wed Aug 29 2012
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 Rapid Update Cycle Surface
Analysis System: Effective October 02, 2012
Effective Tuesday, October 2, 2012, with
the 1200 Universal
Coordinated Time (UTC) cycle, the National
Centers for
Environmental Prediction (NCEP) will stop
running the legacy analysis system known as Rapid Update Cycle Surface (RUCS),
also known as the RUC Surface Assimilation System (RSAS), and discontinue all
output products from this system.
A Public Information Statement was issued
on June 28, 2012,
requesting comments on the proposed termination of the RUCS.
www.nws.noaa.gov/os/notification/pns12rucsurface_anaysis.htm
Based on responses received, NWS will
terminate RUCS and all associated output products on October 2.
The RUCS analysis uses optimum interpolation
in 2-dimensions to update its hourly products, resulting in output products on multiple
grids. As outlined in the PNS referenced above, similar analyses of surface
parameters using the state-of-the-art Gridpoint Statistical Interpolation (GSI) analysis scheme are available from the 12 km
North American Mesoscale (NAM) model and its higher resolution nests, the 13 km
Rapid Refresh (RAP), and the various domains covered by 2.5 km-5 km Real Time
Mesoscale Analysis (RTMA).
The RUCS output is disseminated via the NWS
and NCEP FTP servers. No RUCS products are sent on NOAAPORT. Details about the
exact RUCS products that will be removed can be found at
http://www.nco.ncep.noaa.gov/pmb/products/rsas/
More information about the NAM, RAP and
RTMA products that are
available as replacements can be found at
http://www.nco.ncep.noaa.gov/pmb/products/nam/
http://www.nco.ncep.noaa.gov/pmb/products/rap/
http://www.nco.ncep.noaa.gov/pmb/products/rtma/
If you have questions about this
termination, please contact:
Geoff DiMego
NWS/NCEP Environmental Modeling Center
College Park, MD
or
Rebecca Cosgrove
NWS/NCEP Central Operations
College Park, MD
National Public Information Statements are
online at:
http://www.weather.gov/os/notif.htm
$$
|