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An investigation of the relationship between sub-Saharan rainfall and global sea surface temperaturesThe relationship between SST and rainfall index anomalies over sub-Saharan Africa for the 1970-1984 period is investigated. Results of an empirical orthogonal function analysis indicate that the most dominant eigenmode, EOF1, is characterized by warming over the central eastern Pacific, cooling over the eastern midlatitude Pacific, and warming over the entire Atlantic and Indian ocean basins. EOF1 is found to have statistically signifiant monthly correlations for the Sahel and Soudan regions, with the warm El Nino-like phases of SST EOF1 corresponding to drought conditions. These results suggest that the large-scale SST anomalies may be responsible for a large component of the observed vacillation of sub-Saharan rainfall.
Document ID
19880044123
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Semazzi, F. H. M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Mehta, V.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Sud, Y. C.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 13, 2013
Publication Date
March 1, 1988
Publication Information
Publication: Atmosphere - Ocean
Volume: 26
ISSN: 0705-5900
Subject Category
Meteorology And Climatology
Accession Number
88A31350
Funding Number(s)
CONTRACT_GRANT: NASA TASK 677-92-24
Distribution Limits
Public
Copyright
Other

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