A factorial analysis of the marine carbon cycle and ocean circulation controls on atmospheric CO<sub>2</sub>
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- David R. Cameron
- Centre for Ecology and Hydrology, Bush Estate Penicuik UK
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- Timothy M. Lenton
- School of Environmental Sciences University of East Anglia Norwich UK
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- Andy J. Ridgwell
- Department of Earth and Ocean Sciences University of British Columbia Vancouver, British Columbia Canada
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- John G. Shepherd
- National Oceanography Centre Southampton UK
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- Robert Marsh
- National Oceanography Centre Southampton UK
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- Andrew Yool
- National Oceanography Centre Southampton UK
書誌事項
- 公開日
- 2005-12
- 権利情報
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1029/2005gb002489
- 公開者
- American Geophysical Union (AGU)
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説明
<jats:p>A factorial experiment with a new Earth system model of intermediate complexity is used to assess the sensitivity of atmospheric CO<jats:sub>2</jats:sub> to organic, carbonate and solubility pumps, ocean circulation state, and climate feedback. An analysis of variance of the results reveals that the organic, carbonate, and solubility pumps act multiplicatively and account for 94% of the variance of atmospheric CO<jats:sub>2</jats:sub>. The organic pump explains 63% (89 ppm), the solubility pump 24% (55 ppm), the carbonate pump 6% (28 ppm), and ocean circulation 0.3% (12 ppm) of the variance. Removing all pumps increases atmospheric CO<jats:sub>2</jats:sub> from 278 to 525 ppm. Including interactions with all the pumps increases the effects of ocean circulation from 12 to 56 ppm. However, the ocean circulation states used are unlikely to span the full range of possible states. Changes in Pacific circulation have more effect on atmospheric CO<jats:sub>2</jats:sub> than Atlantic circulation.</jats:p>
収録刊行物
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- Global Biogeochemical Cycles
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Global Biogeochemical Cycles 19 (4), 2005-12
American Geophysical Union (AGU)
