Madagascar heatwave rooted in human-caused climate change: Study

A prolonged heatwave that hit Madagascar in October would not have occurred without human-caused climate change

A prolonged heatwave that hit Madagascar in October would not have occurred without human-caused climate change, a scientific study said on Thursday.

Scientists from the World Weather Attribution (WWA) group said the heatwave in the Indian Ocean island, which affected millions of people, "would have been virtually impossible without human-caused climate change".

The study by 13 researchers looked at three variables to investigate the heatwave: the island's average temperatures over October and the seven-day minimum and maximum temperatures in the country's capital Antananarivo.

"The analysis found that human-caused climate change made the month-long heat, seven-day maximum temperatures and seven-day minimum temperatures about 1-2°C hotter," the WWA report said.

While the temperature increase might not seem like much, Sayanti Sengupta, technical advisor at Red Cross Red Crescent Climate Centre, said "an increase of even half a degree can push thousands more people to their physiological limit".

Sengupta added that it could also cause "heat stress" and loss of life.

Over 13,000 people in Africa have died in extreme weather events in 2023, more than any other continent this year, according to the EM-DAT international disaster database.