Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 26, issue 3
Articles | Volume 26, issue 3
https://doi.org/10.5194/hess-26-731-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-26-731-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 3
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

Data sets

Assessment of CPC-T2m Global Daily Surface Air Temperature (CPC-T2m) Analysis, Assessment, Science and Technology Infusion Climate Bulletin Y. Pan, W. Wang, and W. Shi https://downloads.psl.noaa.gov/Datasets/cpc_global_temp/

A quasi-global precipitation time series for drought monitoring C. C. Funk, P. J. Peterson, M. F. Landsfeld, D. H. Pedreros, J. P. Verdin, J. D. Rowland, B. E. Romero, G. J. Husak, J. C. Michaelsen, and A. P. Verdin https://data.chc.ucsb.edu/products/CHIRPS-2.0/global_daily/netcdf/p05/

Model code and software

The Regional Climate Model version 4.7.1 source code G. Giuliani https://github.com/ICTP/RegCM/releases/tag/4.7.1

Command Language (Version 6.6.2) NCAR https://doi.org/10.5065/D6WD3XH5

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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.
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