Feedbacks upon feedbacks: Rock weathering and the climate
A new study in Nature Communications examines how rock weathering, which typically removes CO2, can also emit it by oxidizing organic carbon. Researchers studied the Toarcian Ocean Anoxic Event 183 million years ago, finding that eroding organic carbon amplified global warming during that period. This suggests a similar process could apply to modern climate change, though the extent is uncertain.
Why it matters
Understanding these complex geological processes is crucial for accurately modeling past and future climate change, as they reveal natural feedback loops that can either mitigate or amplify global warming.
Up in the air Feedbacks upon feedbacks: Rock weathering and the climate Rock weathering may release or draw down carbon dioxide—it depends on the rock.
Presents scientific findings from a peer-reviewed journal without overt political or ideological framing.
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