Earth Institute Research Projects

Drying Versus Wettening of the East African Climate

Lead PI: Bradfield Lyon , Dr. Alessandra Giannini

Unit Affiliation: International Research Institute for Climate and Society (IRI)

May 2013 - March 2016
Africa ; Sub-Saharan Africa ; East Africa
Project Type: Research

DESCRIPTION: The goal of the project is to determine why climate models are predicting a wettening of East Africa while the region has been drying over the past decade. This will be accomplished using observational datasets, climate simulations and identifying dynamical and thermaldynamical processes in the models associated with changes in "long rains" precipitation in East Africa.


National Science Foundation (NSF)





Bradfield Lyon. "Seasonal Drought in East Africa and its Recent Increase During the March-May Long Rains," Journal of Climate, 2014.

W. Yang, R. Seager, M.A. Cane, and B. Lyon. "The Annual Cycle of East African Precipitation," Journal of Climate, v.28, 2015, p. 2385. doi:doi:

Wenchang Yang, Richard Seager, Mark A. Cane, and Bradfield Lyon. "The East African Long Rains in Observations and Models," Journal of Climate, 2014.


climate change wettening models drought climate simulations thermodynamical processes projections ocean and climate physics


Modeling and Adapting to Future Climate