The scientists modelled an Arctic summer, which in the tundra lasts for about 80 days, and during that period organic substances develop actively, and later on they get decomposed and processed.

The Arctic is rapidly changing from the climate crisis, with no "new normal," scientists warn. Wildfires and permafrost thaw are making the tundra emit more carbon than it absorbs ... Sea ice and ...

This summer was the wettest on record for ... sink to a source is of global concern," Brendan Rogers, a scientist studying the tundra at the Woodwell Climate Research Center, said in the briefing.