Effects of Land Cover Changes on Compound Extremes over West Africa Using the Regional Climate Model RegCM4

This study aims to characterize the impacts of Sahel–Sahara interface reforestation on compound extremes in Sahel region during West African monsoon season (June–July–August–September, JJAS). For this purpose, we performed a simulation with standard version RegCM4 model, and another altered same taking into account incorporated forest. Results show that may strongly influence frequency individual extreme events (dry warm days) by decreasing them over off reforested zone. The reduction these dry days be due partly strengthening atmospheric moisture content most parts domain weakening sensible heat flux south 16° N. analysis also shows an increase wet zone, which could associated evapotranspiration domain, including area. strong occurrence dry/warm mode northern for both runs, probably weak precipitation recorded Both experiments simulated wet/warm high rainfall region. When comparing impact was decrease (increase) (wet/warm) is consistent days, while driven days. Finally, when considering seasonal cycle, exhibits more substantial beginning (June–July, JJ) than peak summer (August–September, AS). Moreover, similarly affects JJ AS increasing it Southern (south 15° N). work suggests good solution policymakers mitigate climate change develop better strategies water resource management.