Dangerous humid heat extremes occurring decades before expected (2020)

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Dangerous humid heat extremes occurring decades before expected (2020)

Dangerous humid heat extremes occurring decades before expected

Oppressively hot summer days often evoke the expression, β€œit’s not the heat, it’s the humidity.” That sticky, tropical-like air combined with high temperatures is more than unpleasant β€” it makes extreme heat a greater health risk.Β 

Climate models project that combinations of heat and humidity could reach deadly thresholds for anyone spending several hours outdoors by the end of the 21st century. However, new research says these extremes are already happening β€” decades before anticipated β€” due to global warming to date.Β Β 

The study, β€œThe emergence of heat and humidity too severe for human tolerance,” published today in Science Advances shows for the first time that some locations have already reported combined heat and humidity extremes above humans’ survivability limit. Dangerous extremes only a few degrees below this limit have occurred thousands of times globally β€” including in parts of the southwestern and southeastern United States β€” and have more than doubled in frequency since 1979.

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