[nws-changes] 20110901: RT mesoscale analysis Fwd: ADMIN NOTICE NOUS41 KWBC

• To: nws-changes@xxxxxxxxxxxxxxxx
• Subject: [nws-changes] 20110901: RT mesoscale analysis Fwd: ADMIN NOTICE NOUS41 KWBC
• From: Linda Miller <lmiller@xxxxxxxxxxxxxxxx>
• Date: Thu, 01 Sep 2011 06:50:17 -0600

-------- Original Message --------

087
NOUS41 KWBC 011157
PNSWSH

Technical Implementation Notice 11-42
National Weather Service Headquarters Washington DC
757 AM EDT Thu Sep 1 2011

To:       Subscribers:
          -Family of Services
          -NOAA Weather Wire Service
          -Emergency Managers Weather Information Network
          -NOAAPORT
          Other NWS Partners, Users and Employees

From:     Tim McClung
          Chief, Science Plans Branch
          Office of Science and Technology

Subject:  Real-Time Mesoscale Analysis to Become Operational:
          Effective October 4, 2011

Effective Tuesday, October 4, 2011, with the 1200 Universal
Coordinated Time (UTC) cycle, the Real-Time Mesoscale Analysis
(RTMA) will be upgraded from experimental to operational status.
These elements have been available experimentally from the
National Centers for Environmental Prediction (NCEP) since 2006.

The RTMA is a set of gridded surface analyses for the elements
listed in Table 1 below. NCEP uses all readily-available
satellite, ASOS, METAR, mesonet, buoy, ship and other surface or
near-surface sensor data that can be gathered in near-real time
to generate the RTMA. Analyses are generated for CONUS at 5 and
2.5 km, Alaska at 6 km, and Hawaii, Puerto Rico, and Guam at 2.5
km. All of these fields for all of the resolutions listed above
are currently disseminated on NOAAPORT.

The transition to operational status will not affect these
NOAAPORT products because they will keep their current WMO
headers as listed below.

RTMA grids are also available in the National Digital Guidance
Database (NDGD) for the domains listed above, except for the
CONUS, for which only 2.5 km horizontal resolution RTMA grids
are available. When moved to operational status, the location of
the RTMA grids will move from:

ftp://tgftp.nws.noaa.gov/SL.us008001/ST.expr/DF.gr2/DC.ndgd/GT.r
tma/
  to
ftp://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndgd/GT.r
tma/

The filenames on NDGD will stay the same during this transition.

Table 1:  WMO Headings Assigned to the RTMA grids available on
NOAAPORT at 5 km and 2.5 km horizontal resolution

WMO HEADING     RTMA PARAMETERS

LT*A98 KWBR     temperature analysis
LT*A98 KWBR     temperature analysis uncertainty
LR*A98 KWBR     dewpoint temperature analysis
LR*A98 KWBR     dewpoint temperature analysis uncertainty
LN*A98 KWBR     wind speed analysis
LN*A98 KWBR     wind speed analysis uncertainty
LN*A98 KWBR     wind direction analysis
LN*A98 KWBR     wind direction analysis uncertainty
LU*A98 KWBR     u wind component analysis (NOAAPORT ONLY)
LV*A98 KWBR     v wind component analysis (NOAAPORT ONLY)
LP*A98 KWBR     surface pressure analysis
LP*A98 KWBR     surface pressure analysis uncertainty
LH*A98 KWBR     RTMA model terrain height
LEMA98 KWBR     Accumulated precipitation (5km for CONUS only)
LEIA98 KWBR     Accumulated precipitation (2.5km for CONUS only)
LAMA98 KWBR     GOES effective cloud amount (CONUS only)

Where * is A for Alaska, C for Puerto Rico, G for Guam, H for
Hawaii, I for 2.5km CONUS, M for 5km CONUS.


For questions regarding these changes, please contact:

    Geoff DiMego
    NCEP/EMC Mesoscale Modeling Branch
    Camp Springs, Maryland
    301-763-8000 x 7221
    geoff.dimego@xxxxxxxx

NWS National Technical Implementation Notices are online at:

    http://www.nws.noaa.gov/os/notif.htm

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