The Siberian fires have raised fears about the permafrost and peatlands thawing, releasing carbon long stored in the frozen tundra. Ash from the fires could also blanket nearby snow cover, turning it dark so that it absorbs more solar radiation and warms even faster. In both 2019 and 2020, Yakutia’s wildfires led to record amounts of greenhouse gases being released from the region, according to the Copernicus Atmosphere Monitoring Service (CAMS), part of a European Union observation programme.
In the past six weeks, fires in the region have produced about 150 megatonnes of carbon dioxide equivalent – close to the 2017 annual fossil fuel emissions of Venezuela, said Mark Parrington, a senior scientist at CAMS. “We’re still piecing together the information to try and understand what it means for the climate,” he said. “This year we haven’t yet seen so many fires within the Arctic Circle within that region, but just within the last three to four days we’ve started to see a number of hotspots occurring and a lot of smoke,” said Parrington.