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A collage of typical climate and weather-related events: floods, heatwaves, drought, hurricanes, wildfires and loss of glacial ice. (Image credit: NOAA)
Scientists estimate that human-induced climate change increased the high heat in the southwest US, Mexico, and Central America by 35 times.
The World Weather Attribution (WWA) group analyzed excess heat in southwest states like California, Nevada, and Arizona in May and early June during the US heatwave.
The period also saw deaths from extreme Mexican temperatures.
Planet-warming emissions made such a heatwave four times more likely than in 2000, the experts claimed.
Such attribution studies take time, so scientists can’t say how much climate change is affecting the present heatwave from the center to the northeast of the US and into Canada.
Heatwaves and other extreme weather events are increasing due to climate change, according to experts.
“Our study should be taken as another warning that our climate is heating to dangerous levels,” said Royal Netherlands Meteorological Institute researcher Izidine Pinto.
Oceans experience record-breaking heat owing to climate change, with fatal temperatures increasing in the US, Mexico, and Central America.
As long as humans emit fossil fuels, the heat will worsen, vulnerable people will die, and the expense of life will rise.”
The WWA study included the US Southwest, Mexico, Guatemala, Belize, El Salvador, and Honduras, which had dangerously high temperatures.
Climate change made the region’s warmest five-day span in June 1.4C warmer, experts say.
Many people would have died in May and June if climate change had generated 1.4 °C more heat.”
Mexican officials blamed the heatwave for scores of deaths. Also responsible for howler monkey deaths in Tabasco, southern Mexico.
High nighttime temperatures threaten health since the body has no time to relax and recover, scientists said.
Rapid-attribution studies on global weather occurrences by the WWA examine how climate change has affected their intensity.
The scientists compare the events to predictions of a future without human-induced global warming.
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