The Arctic’s thawing permafrost is releasing a shocking amount of dangerous gases

This “abrupt thaw” affects 5 percent of Arctic permafrost, but it could double the amount of warming it contributes.
https://www.nationalgeographic.com/science/2020/02/arctic-thawing-ground-releasing-shocking-amount-dangerous-gases/

One of Alaska’s warmest springs on record is causing a dangerous thaw - The Washington Post

Bryan Thomas doesn’t want any more “wishy-washy conversations about climate change.” For four years, he has served as station chief of the Barrow Atmospheric Baseline Observatory, America’s northernmost scientific outpost in its fastest-warming state. Each morning, after digging through snow to his office’s front door, Thomas checks the preliminary number on the observatory’s carbon dioxide monitor. On a recent Thursday it was almost 420 parts per million — nearly twice as high as the global preindustrial average. It’s just one number, he said. But there’s no question in his mind about what it means.....
https://www.washingtonpost.com/science/2019/04/19/one-alaskas-warmest-springs-record-is-causing-dangerous-thaw/