Fig. 7From: Weakened seasonality of the African rainforest precipitation in boreal winter and spring driven by tropical SST variabilitiesSimulated seasonal change of Walker circulation in atmospheric models from 1979 to 2015. Color mapping illustrates the circulation change and contour show the climatology. a–c show the pattern forced by the tropical Atlantic, Indian Ocean and Pacific during the boreal winter dry season (DJF). d–f same as a–c but for the boreal spring wet season (AM). Green lines are the African rainforest regionBack to article page