Melting Arctic

Dark brown peat that has stored carbon for millenia erodes into the Chuckchi Sea.
— Melting permafrost and worse fall storms has increased erosion all along this coast. One effect is that it is exposing peat, a form of fossil carbon, to the atmosphere. The peat oxidizes to release carbon dioxide and methane - both greenhouse gases. So global warming triggers the release of more greenhouse gases, triggering further climate warming. This positive feedback is one way that human-triggered climate change might get beyond our control.

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By Ground Truth Trekking

Content on this page is available under a Creative Commons Attribution license.