A small climate-amplifying effect of climate-carbon cycle feedback.

Nat Commun · 2021 · PMC8134589 · PMID 34011925

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possibly significantno p-value reported

The η (or α −1 ) for the industrial period includes a possibly significant contribution from an emissions-driven increase in atmospheric CO 2 concentration to the climate–carbon feedback.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.