Articles | Volume 26, issue 3
https://doi.org/10.5194/hess-26-731-2022
https://doi.org/10.5194/hess-26-731-2022
Research article
 | 
11 Feb 2022
Research article |  | 11 Feb 2022

Influence of initial soil moisture in a regional climate model study over West Africa – Part 2: Impact on the climate extremes

Brahima Koné, Arona Diedhiou, Adama Diawara, Sandrine Anquetin, N'datchoh Evelyne Touré, Adama Bamba, and Arsene Toka Kobea

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Sensitivity study of the regional climate model RegCM4 to different convective schemes over West Africa
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Cited articles

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. 
Damien, D., Chung, C. E., Ekman, A. M. L., and Brandefelt, J.: Which significance test performs the best in climate simulations?, Tellus A, 66, 23139, https://doi.org/10.3402/tellusa.v66.23139, 2014. 
Danielson, J. J. and Gesch, D. B.: Global multi-resolution terrain elevation data 2010 (GMTED2010), US Geological Survey Open-File Report 2011-1073, p. 26, https://doi.org/10.3133/ofr20111073, 2011. 
Diaconescu, E. P., Gachon, P., Scinocca, J., and Laprise, R.: Evaluation of daily precipitation statistics and monsoon onset/retreat over West Sahel in multiple data sets, Clim. Dynam., 45, 1325–1354, https://doi.org/10.1007/s00382-014-2383-2, 2015. 
Short summary
The impact of initial soil moisture is more significant on temperature extremes than on precipitation extremes. A stronger impact is found on maximum temperature than on minimum temperature. The impact on extreme precipitation indices is homogeneous, especially over the Central Sahel, and dry (wet) experiments tend to decrease (increase) the number of precipitation extreme events but not their intensity.