“We’ve known that warmer temperatures and thawing permafrost have been accelerating winter CO2 emissions, but we haven’t had a clear accounting of the winter carbon balance,” says Sue Natali, director of the Arctic programme at the Woods Hole Research Center, which headed the study.

Four Swedish researchers from the University of Gothenburg, Lund University and Stockholm University have participated in the study.

Read the press release from the University of Gothenburg