Permafrost thawing faster than expected due to extreme summer rainfall NatureComms
Using a motor pump and sprinklers, researchers of the Plant Ecology & Nature Management group simulated the effect of extreme summer rains on the Siberian tundra ecosystem. Credit: Rúna Magnússon
Permafrost forms the foundation of Arctic ecosystems and the settlements of humans who live on it. When the permafrost thaws, the soil loses its load-bearing capacity. In addition, the organic carbon stored in the frozen soil decomposes more easily into greenhouse gases, such as COthrough permafrost thaw causes what is known as a positive feedback loop, a self-reinforcing process.
A crumbling permafrost bank on the shores of a lake reveals man-sized ice structures hidden in the frozen ground. The dark color of the soil is due to the presence of organic material such as decomposed plant remains. Credit: Rúna Magnússon
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