Arctic Tundra Transitions from Cooling to Warming, Emitting More Carbon

The Arctic experienced its second-hottest year on record, with significant environmental changes highlighted in a NOAA report. The region's tundra has shifted from a carbon sink to a source of emissions due to thawing permafrost, releasing carbon dioxide and methane. This contributes to Arctic amplification, where less ice and snow lead to more heat absorption. Wildfires have also increased emissions, surpassing those from Canada's economic activities. These changes underscore the Arctic's rapid transformation and its global impact.