Articles | Volume 11, issue 1
Earth Syst. Dynam., 11, 319–328, 2020
https://doi.org/10.5194/esd-11-319-2020
Earth Syst. Dynam., 11, 319–328, 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 et al.

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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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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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