Shortwave and longwave radiative contributions to global warming under increasing CO <sub>2</sub>
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- Aaron Donohoe
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139;
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- Kyle C. Armour
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139;
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- Angeline G. Pendergrass
- Advanced Study Program, National Center for Atmospheric Research, Boulder, CO 80307; and
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- David S. Battisti
- Department of Atmospheric Sciences, University of Washington, Seattle, WA 98195
書誌事項
- 公開日
- 2014-11-10
- DOI
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- 10.1073/pnas.1412190111
- 公開者
- Proceedings of the National Academy of Sciences
この論文をさがす
説明
<jats:title>Significance</jats:title> <jats:p> The greenhouse effect is well-established. Increased concentrations of greenhouse gases, such as CO <jats:sub>2</jats:sub> , reduce the amount of outgoing longwave radiation (OLR) to space; thus, energy accumulates in the climate system, and the planet warms. However, climate models forced with CO <jats:sub>2</jats:sub> reveal that global energy accumulation is, instead, primarily caused by an increase in absorbed solar radiation (ASR). This study resolves this apparent paradox. The solution is in the climate feedbacks that increase ASR with warming—the moistening of the atmosphere and the reduction of snow and sea ice cover. Observations and model simulations suggest that even though global warming is set into motion by greenhouse gases that reduce OLR, it is ultimately sustained by the climate feedbacks that enhance ASR. </jats:p>
収録刊行物
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- Proceedings of the National Academy of Sciences
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Proceedings of the National Academy of Sciences 111 (47), 16700-16705, 2014-11-10
Proceedings of the National Academy of Sciences
