Long-buried layers of saline permafrost seem to be accelerating climate change’s transformation of the Arctic



Summary

Thawing saline permafrost in the Arctic is emerging as a significant factor accelerating climate change. This previously overlooked layer, rich in salt and organic matter, is now being exposed by rising temperatures. As it thaws, the trapped organic material decomposes, releasing potent greenhouse gases like methane. The saline content further destabilizes the surrounding permafrost, speeding up the thawing process and releasing more gases. This creates a feedback loop, amplifying warming and potentially leading to faster and more dramatic changes in the Arctic landscape and climate than previously anticipated.

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