South Africa (water scarcity/sea level rise/malaria)

South Africa, like many other countries, is significantly affected by climate change: a phenomenon driven by various factors, primarily humans’ burning of fossil fuels. The impacts of climate change on South Africa are diverse and wide-ranging, affecting various sectors of the economy as well as the environment and society. 

Climate change drives shifts in precipitation patterns in South Africa. This may exacerbate water scarcity, as decreased rainfall and increased evaporation rates lead to reduced water availability. This presents challenges to agriculture, industry, and households. On the other hand, extreme rainfall events are also becoming more common. Damage from heavy rain can adversely affect crop yields, livestock productivity, and overall food security. These issues also pose risks to nature; being a diverse country, South Africa is home to a huge range of organisms, including over 20,000 plant species. The country’s biodiversity is at risk due to changing rainfall patterns, impacting habitats, species distributions, and ecosystem services. 

The melting of Arctic glaciers, including the Greenland ice sheet, contributes to rising sea levels globally, affecting coastal areas in South Africa. South Africa’s long coastline is also vulnerable to the effects of rising sea levels, including coastal erosion, saltwater intrusion, and increased storm surges. Furthermore, climate change affects human health in South Africa by inducing heat stress and creating conditions conducive to increased disease transmission. For example, May 2023 marked an uptick in malaria in the northeast of the country, as the disease spread beyond its historical endemic range into the province of Gauteng.  

The Arctic drives climate change globally through mechanisms like Arctic amplification, where faster rates of warming in the far north alter global atmospheric and oceanic circulation patterns. Changes in atmospheric circulation influenced by the Arctic can impact weather systems, such as the movement of high and low-pressure systems and jet streams, which can have knock-on effects in the Southern Hemisphere, including in South Africa. 

One reason for the Arctic’s high rate of warming is that it is losing reflectivity due to decreasing Arctic sea ice. As white, reflective sea ice melts, the darker ocean is exposed and more sunlight is absorbed as heat. This accelerates both local Arctic warming and rises in the global average temperature, magnifying climate change impacts around the world. Additionally, feedback mechanisms, such as the release of greenhouse gases from thawing Arctic permafrost, contribute to global greenhouse gas concentrations, further exacerbating climate change.  

To address these challenges, South Africa is taking steps to mitigate and adapt to climate change, including reducing greenhouse gas emissions, implementing renewable energy projects, and developing climate change adaptation strategies. Still, while South Africa represents only 0.7% of the world’s population, it is responsible for almost double that share of global emissions. This is due to the country’s heavy reliance on coal and other fossil fuel sources. International cooperation and support are crucial for South Africa and other vulnerable nations to effectively tackle the impacts of climate change, including those influenced by the Arctic. 

Read more about extreme weather here.

Read more about health risks here.

Read more about sea level rise here.

Read more about water insecurity here.