Articles | Volume 18, issue 12
https://doi.org/10.5194/hess-18-4965-2014
https://doi.org/10.5194/hess-18-4965-2014
Research article
 | 
10 Dec 2014
Research article |  | 10 Dec 2014

Predicting East African spring droughts using Pacific and Indian Ocean sea surface temperature indices

C. Funk, A. Hoell, S. Shukla, I. Bladé, B. Liebmann, J. B. Roberts, F. R. Robertson, and G. Husak

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Short summary
Western Pacific SST gradients influence eastern East African precipitation in predictable ways. At seasonal and decadal timescales, warm equatorial western Pacific SSTs and cool eastern Pacific SSTs reduce precipitation in East Africa. The gradient between these regions can be used to make reasonably accurate forecasts in one of the world's most food-insecure regions. Recent warming in the western Pacific and stationary eastern Pacific conditions have produced large precipitation declines.