Global warming made the heavy rains behind South Africa's devastating floods last month twice as likely as they would have been if greenhouse gas emissions had never heated the planet, scientists said on Friday.
Flash floods around the east coast city of Durban killed 435 people, left tens of thousands homeless and caused 10 billion rand worth of damage to roads, power lines, water pipes and one of Africa's busiest ports.
"Without human-caused global warming, such an event would only happen once every 40 years, so it has become about twice as common as a result of greenhouse gas emissions." Attributing specific weather events to climate change is a tricky business that deals in probabilities, never certainty. But co-author Friederike Otto, from Imperial College London, said the study had examined data from the wider region, not just Durban.
Africa's southeastern coast is on the front line of seaborne weather systems that climate change is making nastier, scientists say. South Africa's tropical northern neighbour Mozambique has suffered multiple cyclones and floods in the past decade, including one in April that killed more than 50 people.
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