Does atmospheric CO<sub>2</sub> police the rate of chemical weathering?

Wallace S. Broecker, Abhijit Sanyal

doi:10.1029/98gb01927

Does atmospheric CO<sub>2</sub> police the rate of chemical weathering?

DOI Web Site Web Site 被引用文献1件

書誌事項

公開日: 1998-09

権利情報

http://onlinelibrary.wiley.com/termsAndConditions#vor

DOI

10.1029/98gb01927

公開者: American Geophysical Union (AGU)

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説明

<jats:p>A case is made that in the absence of an effective feedback control on the rate of delivery of CaO to the oceans, the CO<jats:sub>2</jats:sub> content of the Earth's atmosphere would have wandered over a large range threatening life either by overheating or by carbon dioxide starvation. In this paper, we defend the suggestion by <jats:italic>Walker et al.</jats:italic> [1981] that control is exerted by the interaction between the CO<jats:sub>2</jats:sub> content of the atmosphere and the continental weathering rates. We contend that in spite of the arguments raised against it [<jats:italic>Raymo and Ruddiman</jats:italic>, 1992; <jats:italic>Edmond and Huh</jats:italic>, 1997] the CO<jats:sub>2</jats:sub>‐ chemical weathering feedback is the dominant mechanism that stabilizes the atmospheric carbon dioxide content.</jats:p>