Observed Change in Sahel Rainfall, Circulations, African Easterly Waves, and Atlantic Hurricanes Since 1979

Figure 8

(Modified from Chen et al. [28]) July–September climatological streamlines at 925 mb overlaid with tropical cyclogeneses of AEW origin and the trajectory and genesis of AEWs for (a) the southern track (AEW_S) and (b) the northern track (AEW_n). Symbols are explained in the right. The AEJ core is indicated by the black solid line. Data period: 1979–2006.

(a)

(b)