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Summers could last for half the year by 2100

20.03.2021
Příroda
Heatwaves and wildfires will be more likely and winter will be squeezed to just 31 daysOur summers are already about 20% longer than they used to be, and if the climate crisis continues unabated then northern hemisphere summers could cover nearly half of the year by 2100, making them more than twice as long as they were in the 1950s. And unlike their counterparts of the 1950s, future summers will be more extreme, with heatwaves and wildfires more likely.Researchers used historical climate data to measure how much the seasons have changed already. They defined summer as the onset of temperatures in the hottest 25% for that time period and winter as the onset of the coldest 25% of temperatures. Their results, published in Geophysical Research Letters, show that the average northern hemisphere summer has grown from 78 to 95 days between 1952 and 2011, while winter has shrunk from 76 to 73 days. Spring and autumn have contracted too. Continue reading...
Zdroj: The Guardian

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