The world’s most northerly forests could be a “time bomb” of planet-warming pollution as expanding wildfires have released record high levels of planet-heating pollution into the atmosphere, according to a new study
. Using new satellite data analysis techniques, researchers found that, since 2000, summer wildfires have expanded in boreal forests, which wrap around the northernmost parts of the Earth. Boreal forest fires usually make up 10% of global wildfire-related carbon pollution. But in 2021, their contribution soared to 23%, according to the study, as extreme drought and heatwaves in Siberia and Canada helped drive intense fires.
“New fires have appeared in the north of Yakutia, in places where there were no fires last year and where it had not burned at all before,” he said. Wildfires are becoming larger and more intense and they are also happening in places that aren’t used to such extreme fires. The situation is likely to worsen as temperatures rise, study author Bo Zheng, an assistant professor at Tsinghua University in Beijing, told CNN via email.
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