Palsa mires continue to degrade at a rapid pace
A long-term study conducted at the University of Eastern Finland shows a significant reduction in palsa area due to climate change. At the observation sites, palsa area had decreased by more than 75% from 1959 to 2021. However, climate had only a limited impact on the active layer of palsa mounds. Active layer thickness did not significantly increase during the monitoring period, although the lowering and collapse from the edges of palsas indicates that their permafrost core continues to thaw, year after year. “In one of the observation sites, active layer thickness has in fact been
