Articles | Volume 11, issue 1
https://doi.org/10.5194/esd-11-319-2020
https://doi.org/10.5194/esd-11-319-2020
Research article
 | 
01 Apr 2020
Research article |  | 01 Apr 2020

Intensification of the hydrological cycle expected in West Africa over the 21st century

Stella Todzo, Adeline Bichet, and Arona Diedhiou

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Cited articles

Allen, M. R. and Ingram, W. J.: Constraints on future changes in the hydrological cycle, Nature, 419, 224–228, 2002. 
AMMA-CATCH: African Monsoon Multidisciplinary Analysis – Coupling the Tropical Atmosphere and the Hydrological Cycle, http://www.amma-catch.org/, last access: February 2017. 
Berthou, S., Kendon, E., Rowell, D. P., Roberts, M. J., Tucker, S. O., and Stratton, R. A.: Larger future intensification of rainfall in the West African Sahel in a convection-permitting model, Geophys. Res. Lett., 46, 13299–13307, https://doi.org/10.1029/2019GL083544, 2019. 
Bichet, A. and Diedhiou, A.: West African Sahel has become wetter during the last 30 years, but dry spells are shorter and more frequent, Clim. Res., 75, 155–162, 2018a. 
Bichet, A. and Diedhiou, A.: Less frequent and more intense rainfall along the coast of the Gulf of Guinea in West and Central Africa (1981–2014), Clim. Res., 76, 191–201, 2018b. 
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Short summary
This study uses climate projections over West Africa to investigate the future changes in different aspects of its hydrological cycle. Over the 21st century, temperatures are expected to increase at a faster rate (+0.5 °C per decade) than the global average (+0.3 °C per decade), leading to an intensification of the hydrological cycle on average of +11 % per °C over the Sahel (more intense precipitation and longer dry spells) and +3 % per °C over the Guinea Coast (more intense precipitation).
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