What's considered officially 'dangerous heat' in coming decades will likely hit much of the world at least three times more often as climate change worsens, according to a new study.
What's considered officially "dangerous heat" in coming decades will likely hit much of the world at least three times more often as climate change worsens, according to a new study.
"So that's kind of the scary thing about this," said study author Lucas Zeppetello, a Harvard climate scientist. "That's something where potentially billions of people are going to be exposed to extremely dangerous levels of heat very regularly. So something that's gone from virtually never happening before will go to something that is happening every year."
There's only a 5% chance for warming to be that low and that infrequent, the study found. What's more likely, according to the study, is that the 103-degree heat will steam the tropics "during most days of each typical year" by 2100. "Sadly, the horrific predictions shown in this study are credible," climate scientist Jennifer Francis of the Woodwell Climate Research Center, who was not part of the study team, said in an email. "The past two summers have provided a window into our steamy future, with lethal heat waves in Europe, China, northwestern North America, India, the south-central U.S., the U.K., central Siberia, and even New England.
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Dangerous heat predicted to happen three times more often in the futureWhat’s considered officially “dangerous heat” in coming decades will likely hit much of the world at least three times more often as climate change worsens, according to a new study.
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Dangerous heat predicted to hit 3 times more often in futureWhat's considered officially “dangerous heat” in coming decades will likely hit much of the world at least three times more often as climate change worsens, according to a new study. In much of Earth's wealthy mid-latitudes, spiking temperatures and humidity that feel like 103 degrees (39.4 degrees Celsius) or higher -- now an occasional summer shock — statistically should happen 20 to 50 times a year by mid-century, said a study Monday in the journal Communications Earth & Environment. The study said a heat index considered “extremely dangerous” where the feels-like heat index exceeds 124 degrees (51 degrees Celsius) — now something that rarely happens — will likely strike a tropical belt that includes India one to four weeks a year by century's end.
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