Subject: Addition of Satellite Observations to
Global Data
Assimilation System Effective August 20, 2013
Effective Tuesday, August 20, 2013, with the 1200 Universal
Coordinated Time (UTC) cycle, the National Centers for
Environmental Prediction (NCEP) will begin incorporating
additional satellite data in the Global Data Assimilation System
(GDAS). These data are necessary to keep up with the evolving
observing system. This change does not alter the format or
content
of any output from the GDAS.
The additional observations to be included are the NPP CrIS data,
METOP-B AMSU-A/MHS/GRAS data, and SEVIRI data from
Meteosat-10.
All data should provide some additional information to the
assimilation system, but experiments to date have not shown any
significant positive or negative forecast impact.
In addition to the potential additional information in the data,
the observations are being added to increase the resiliency to
potential future loss and evolution of the observing system. The
NPP CrIS data supplies similar information and is in a similar
orbit to the Aqua AIRS data. The METOP-B data is being
incorporated since the METOP-B satellite is replacing the METOP-A
satellite as the primary morning satellite. SEVIRI
data from
Meteosat-10 replaces data from Meteosat-9.
If you have questions about this change, please contact:
John Derber
NWS/NCEP Environmental Modeling Center
College Park, MD
john.derber@noaa.gov
National Public Information Statements are
online at:
http://www.weather.gov/os/notif.htm
Contact Information
for Further Information: ESPC Operations at ESPCOperations@noaa.gov
and 301-817-3880.
Web Site(s) for applicable
information: N/A
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