Climate change could see 4% of global annual economic output lost by 2050 and hit many poorer parts of the world disproportionately hard, a new study of 135 countries has estimated.
Ratings firm S&P Global, which gives countries credit scores based on the health of their economies, published a report on Tuesday looking at the likely impact of rising sea levels, and more regular heat waves, droughts and storms.
Central Asia, the Middle East and North Africa and Sub-Saharan Africa regions all face sizable losses too. East Asia and Pacific countries face similar levels of exposure as Sub-Saharan Africa, but mainly because of storms and floods rather than heat waves and drought. For most countries, exposure to, and costs from climate change are already increasing. Over the past 10 years, storms, wildfires, and floods alone have caused losses of around 0.3% of GDP per year globally according insurance firm Swiss Re.
S&P's Sifon-Arevalo said that some countries have already suffered credit ratings downgrades due to extreme weather, such as some Caribbean Islands after major hurricanes.
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