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The Impact of British Airways Wind Observations on the Goddard Earth Observing System Analyses and ForecastsBritish Airways flight data recorders can provide valuable meteorological information, but they are not available in real-time on the Global Telecommunication System. Information from the flight recorders was used in the Global Aircraft Data Set (GADS) experiment as independent observations to estimate errors in wind analyses produced by major operational centers. The GADS impact on the Goddard Earth Observing System Data Assimilation System (GEOS DAS) analyses was investigated using GEOS-1 DAS version. Recently, a new Data Assimilation System (fvDAS) has been developed at the Data Assimilation Office, NASA Goddard. Using fvDAS , the, GADS impact on analyses and forecasts was investigated. It was shown the GADS data intensify wind speed analyses of jet streams for some cases. Five-day forecast anomaly correlations and root mean squares were calculated for 300, 500 hPa and SLP for six different areas: Northern and Southern Hemispheres, North America, Europe, Asia, USA These scores were obtained as averages over 21 forecasts from January 1998. Comparisons with scores for control experiments without GADS showed a positive impact of the GADS data on forecasts beyond 2-3 days for all levels at the most areas.
Document ID
20020021986
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Rukhovets, Leonid
(Science Applications International Corp. Greenbelt, MD United States)
Sienkiewicz, M.
(Science Applications International Corp. Greenbelt, MD United States)
Tenenbaum, J.
(State Univ. of New York Purchase, NY United States)
Kondratyeva, Y.
(Science Applications International Corp. Greenbelt, MD United States)
Owens, T.
(Science Applications International Corp. Greenbelt, MD United States)
Oztunali, M.
(State Univ. of New York Purchase, NY United States)
Atlas, Robert
Date Acquired
August 20, 2013
Publication Date
January 1, 2001
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: European Geophysical Society XXVII General Assembly
Location: Nice
Country: France
Start Date: April 21, 2002
End Date: April 26, 2002
Sponsors: European Geophysical Society
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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