File:Climatic variations in tropical West African rainfall and the implications for military planners (IA climaticvariatio109454055).pdf
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Summary
Climatic variations in tropical West African rainfall and the implications for military planners
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| Author |
Montgomery, Christi S. |
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| Title |
Climatic variations in tropical West African rainfall and the implications for military planners |
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| Publisher |
Monterey, California. Naval Postgraduate School |
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| Description |
We have identified statistical and dynamical relationships between summer rainfall variations in tropical West Africa (TWA) and El NinÌ o/La NinÌ a (ENLN) events in the tropical Pacific. Our primary data sets were the National Centers for Environmental Prediction / National Center for Atmospheric Research reanalysis fields and the Multivariate ENSO Index (MEI) for the period 1970- 2007. Correlations of TWA rainfall and MEI time series showed that high (low) TWA rainfall was significantly correlated with LN (EN) events, with LN (EN) leading by zero to seven months. Composite analyses showed that ENLN impacts on TWA occurred via global scale equatorial Rossby-Kelvin waves and Southern Hemisphere Rossby wave trains that extended into the tropical African region. We also found regional connections between positive (negative) sea surface temperature (SST) anomalies in the Gulf of Guinea and Angola coastal waters and negative (positive) TWA rainfall anomalies. We expect our results to contribute to improved long lead rainfall predictions for TWA. This would allow military and civilian planners to construct a more effective framework for Theater Security Cooperation in TWA, including strategies for mitigating the impacts of climate variations and climate change. Subjects: Rain and rainfall; Africa, West; Climatic changes; Military planning; Precipitation forecasting |
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| Language | English | |
| Publication date | June 2008 | |
| Current location |
IA Collections: navalpostgraduateschoollibrary; fedlink |
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| Accession number |
climaticvariatio109454055 |
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| Source | ||
| Permission (Reusing this file) |
Approved for public release, distribution unlimited | |
Licensing
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 18:16, 15 July 2020 |  | 1,275 × 1,650, 112 pages (5.97 MB) | Fæ | FEDLINK - United States Federal Collection climaticvariatio109454055 (User talk:Fæ/IA books#Fork8) (batch 1993-2020 #11462) |