Observed Change in Sahel Rainfall, Circulations, African Easterly Waves, and Atlantic Hurricanes Since 1979
Figure 7
Evolution of SSTs over (a) Atlantic 40°W–20°W and (b) Gulf of Guinea 10°W–10°E superimposed with the linear trends (yellow dashed lines) and the Sahel rainband (thick blue line). (c) Evolution of the meridional gradient of CRU surface temperature anomalies over the central Sahel 10°W–10°E.
