Table 2. Continental green and blue water fluxes for Africa as calculated in model experiments 1 and 3.

Fluxes [km3/yr] 2000 2050
Policy First
2050
Security First
Green water flux (evapotranspiration from rainfed part of cropland) 1085 1870 (+72%) 2040 (+88%)
Blue water flux (water withdrawals for irrigation) 179 194 (+8%) 330 (+84%)