Tag Archives: Sub-Saharan Africa

Africa’s human existence and development under threat from the adverse impacts of climate change

– “Africa’s human existence and development is under threat from the adverse impacts of climate change – its population, ecosystems and unique biodiversity will all be the major victims of global climate change.”

The continent of 54 countries with a combined population of over 1,200 billion inhabitants will be struck more severely by the mpacts of climate change as any other continent.

In Sub-Saharan Africa, extreme weather will cause dry areas to become drier and wet areas wetter; agriculture yields will suffer from crop failures; and diseases will spread to new altitudes, say the World Bank experts, while alerting that by 2030 it is expected that 90 million more people in Africa will be exposed to malaria, “already the biggest killer in Sub-Saharan Africa.”

These and other dramatic conclusions are not new to the World Bank specialists. In fact, they alerted five years ago that the African continent has warmed about half a degree over the last century and the average annual temperature is likely to rise an average of 1.5-4°C by 2099, according to the most recent estimates from the IPCC.

— By 2020, between 75 and 250 million people in Africa are projected to be exposed to increased water stress due to climate change.

— By 2020, in some countries, yields from rain-fed agriculture could be reduced by up to 50%.

— Agricultural production, including access to food, in many African countries is projected to be severely compromised. This would further adversely affect food security and exacerbate malnutrition.

— Towards the end of the 21st century, projected sea level rise will affect low-lying coastal areas with large populations.

— By 2080, an increase of 5 to 8 per cent of arid and semi-arid land in Africa is projected under a range of climate scenarios,

— The cost of adaptation could amount to at least 5 to 10% of Gross Domestic Product (GDP).

It is estimated that, by the 2080s, the proportion of arid and semi-arid lands in Africa is likely to increase by 5-8 per cent. Ecosystems are critical in Africa, contributing significantly to biodiversity and human well-being.

A Zimbabwean subsistence farmer holds a stunted maize cob in his field outside Harare. Credit: FAO

A Zimbabwean subsistence farmer holds a stunted maize cob in his field outside Harare. Credit: FAO

By 2080, an increase of 5 to 8 per cent of arid and semi-arid land in Africa is projected under a range of climate scenarios. Droughts have become more common, especially in the tropics and subtropics, since the 1970s.

Human health, already compromised by a range of factors, could be further negatively impacted by climate change and climate variability, e.g., malaria in southern Africa and the East African highlands.

By 2020, a population of between 75 and 250 million and 350-600 million by 2050, are projected to be exposed to increased water stress due to climate change. Climate change and variability are likely to impose additional pressures on water availability, water accessibility and water demand in Africa.

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