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Relationship of Sahel Precipitation and Atmospheric Centers of Action
Joint Authors
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-11-01
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The dynamics associated with drought in the Sahel have attracted considerable attention in the recent literature.
This paper evaluates Sahel precipitation using the paradigm of the atmospheric centers of action, that is, the extended semipermanent highs and lows that dominate regional circulations and are evident in sea level pressure patterns.
We find that Sahel precipitation is significantly influenced by changes in the Azores High and the South Asia Low.
Specifically, about 50 percent of the variance of July to September rainfall over the Sahel is explained by changes in the Azores High Longitude position and South Asia Low pressure.
In contrast, the contribution of the Southern Oscillation to Sahel precipitation is smaller in comparison.
Results presented in this paper suggest that a key test for a climate model in simulating variability of Sahel rainfall is the accuracy with which the model simulates the dynamics of South Asia Low and the Azores High.
American Psychological Association (APA)
Hameed, Sultan& Riemer, Nicole. 2012. Relationship of Sahel Precipitation and Atmospheric Centers of Action. Advances in Meteorology،Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-511096
Modern Language Association (MLA)
Hameed, Sultan& Riemer, Nicole. Relationship of Sahel Precipitation and Atmospheric Centers of Action. Advances in Meteorology No. 2012 (2012), pp.1-8.
https://search.emarefa.net/detail/BIM-511096
American Medical Association (AMA)
Hameed, Sultan& Riemer, Nicole. Relationship of Sahel Precipitation and Atmospheric Centers of Action. Advances in Meteorology. 2012. Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-511096
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-511096