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TRMM radar data (e.g., Gosset et al. 2013 ; Pfeifroth et al. 2016 ). The period used in the present study is 1983–2014. 3. Methods a. Analysis of atmospheric dynamics Both Ouagadougou and Dakar are located in the Sahel, a region stretching between about 12° and 18°N from the Atlantic coast to the Red Sea (see Fig. 1a ). This area is characterized by the transition from the arid conditions of the Sahara with less than 200 mm rainfall per year to a more humid climate equatorward. The West African
TRMM radar data (e.g., Gosset et al. 2013 ; Pfeifroth et al. 2016 ). The period used in the present study is 1983–2014. 3. Methods a. Analysis of atmospheric dynamics Both Ouagadougou and Dakar are located in the Sahel, a region stretching between about 12° and 18°N from the Atlantic coast to the Red Sea (see Fig. 1a ). This area is characterized by the transition from the arid conditions of the Sahara with less than 200 mm rainfall per year to a more humid climate equatorward. The West African
