Climate change is projected to reduce sorghum yields in west Africa . For example, across the west African Sahel savanna sorghum yields are projected to decline on average 2% at 1.5℃ and 5% at 2°C global warming . For coffee and tea in eastern Africa, olives in Algeria and sunflower in Botswana and Morocco, studies indicate mostly negative impacts on production systems. For example, in Kenya, compared to 2000, optimal habitat for tea production is projected to decrease in area by 27% with yields declining 10% for global warming of 1.8-1.9ºC, although yield declines may be reduced at higher levels of warming . Suitable area for tea production may reduce by half in Uganda . In east Africa, the coffee-growing area is projected to shift up in elevation with suitability decreasing 10-30% between 1.5-2℃ of global warming .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report