Wildfires like those ravaging Canada are becoming bigger and more frequent as forests around the world increasingly dry out amid the warming climate, many scientists say.
Some of the biggest fires are breaking out in the boreal forests of the Northern Hemisphere such as most of the ones in Canada. That is because the Arctic region has warmed nearly four times faster than the rest of the world, said Carly Phillips, a Boston-based research scientist at the Union of Concerned Scientists.
In the boreal areas—mostly conifer forests with long winters and short summers—of Canada and Alaska, she said the annual area burned has nearly doubled in the past 60 years, along with an increase in the frequency of large fires. Russia’s vast Siberian forests have been consumed by giant fires too. Phillips said this year’s outbreak, while unprecedented in size, is just following the trend.
“I don’t know if it’s a tipping point, but what this underscores is that the climate crisis is here and now,” Phillips said.
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