Articles | Volume 26, issue 3
https://doi.org/10.5194/hess-26-711-2022
https://doi.org/10.5194/hess-26-711-2022
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 1: Impact on the climate mean

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

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Cited articles

Charney, J. G.: Dynamics of deserts and drought in the Sahel, Q. J. Roy. Meteorol. Soc., 101, 193–202, https://doi.org/10.1002/qj.49710142802, 1975. 
Cook, K. H.: Generation of the African easterly jet and its role in determining West African precipitation, J. Climate, 12, 1165–1184, https://doi.org/10.1175/1520-0442(1999)012<1165:GOTAEJ>2.0.CO;2, 1999. 
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. 
Diedhiou, A. and Mahfouf, J. F.: Comparative influence of land and sea surfaces on the Sahelian drought: a numerical study, Ann. Geophys., 14, 115–130, https://doi.org/10.1007/s00585-996-0115-6, 1996. 
Short summary
The impact of initial soil moisture anomalies can persist for up to 3–4 months and is greater on temperature than on precipitation over West Africa. The strongest homogeneous impact on temperature is located over the Central Sahel, with a peak change of −1.5 and 0.5 °C in the wet and dry experiments, respectively. The strongest impact on precipitation in the wet and dry experiments is found over the West and Central Sahel, with a peak change of about 40 % and −8 %, respectively.
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