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Source: Wood et al. (2010). Note: Based on 2005 US$ (US dollars) and on purchasing power parity value.
FIGURE 1.3
Annual average precipitation in West Africa, 2000s (millimeters per year) < 50
50 to 100 100 to 200 200 to 350 350 to 500 500 to 700 700 to 900 900 to 1150 1150 to 1400 1400 to 1650 1650 to 1900 1900 to 2250 2250 to 2600 2600 to 3000 > 3000
Source: WorldClim version 1.4 (Hijmans et al. 2005).