Organic Matter in Arctic River Shows Permafrost Thaw

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https://eos.org/research-spotlights/organic-matter-in-arctic-river-shows-permafrost-thaw

Source:  By David Schultz, Eos/AGU.

Excerpt: The Arctic is the fastest-warming region on Earth, and increasing temperatures are thawing permafrost, releasing more carbon into the atmosphere, and accelerating warming. These feedbacks concern scientists because roughly 850 gigatons of carbon—representing 25%–50% of all soil organic carbon on Earth—are believed to be stored in the permafrost at present. Arctic rivers receive carbon both from the seasonally thawing top layer of the soil and from eroding riverbanks.  ...In a new study [https://doi.org/10.1029/2019JG005511], Bröder et al. analyze water from two sites in the Kolyma River watershed in northern Siberia....

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