Figure 2: Modern rainfall variability over Africa.
From: Development of Middle Stone Age innovation linked to rapid climate change
(a) January and (b) August. Colours indicate days per month with measurable rainfall. The climate over large parts of Africa is characterized by a strong seasonality with summer monsoonal rainfall and the approximate position of the ITCZ (red band) migrating between the north and south of the continent over the course of the year.
