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A carbon cycle model is presented in which direct ventilation of intermediate and deep ocean waters in high latitudes is taken into account. The 1 1/2 -dimensional ocean model is an extension of a box-diffusion model including a deep-sea outcrop at the surface. If both are calibrated in a consistent way, the outcrop-diffusion ocean takes up more excess CO/sub 2/ than the box-diffusion ocean because the outcropping deep water is essentially virgin as to fossil CO/sub 2/. Two calibration methods are compared, using the distribution either of natural or of bomb-produced /sup 14/C. The latter leads to a higher oceanic uptake of excess CO/sub 2/ than the former and to a better agreement with the observed atmospheric increase. Long-term model responses are also discussed.
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| Authors: |
Siegenthaler, U.
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| Publication Date: | 1983 Apr 20 |
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| OSTI Identifier: | 5765731 |
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| Resource Type: | Journal Article |
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| Resource Relation: | Journal Name: J. Geophys. Res.; (United States); Journal Volume: 88:C6 |
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| Research Org: | Physics Institute, University of Bern, Bern, Switzerland |
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| Country of Publication: | United States |
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| Language: | English |
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| Format: | Size: Pages: 3599-3608 |
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| Other Number(s): | Journal ID: CODEN: JGREA |
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| Subject: | 54 ENVIRONMENTAL SCIENCES; CARBON CYCLE; MATHEMATICAL MODELS; CARBON DIOXIDE; AIR-WATER INTERACTIONS; CALIBRATION; CARBON 14; DIFFUSION; NUMERICAL SOLUTION; ONE-DIMENSIONAL CALCULATIONS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CARBON COMPOUNDS; CARBON ISOTOPES; CARBON OXIDES; CHALCOGENIDES; EVEN-EVEN NUCLEI; ISOTOPES; LIGHT NUCLEI; NUCLEI; OXIDES; OXYGEN COMPOUNDS; RADIOISOTOPES; YEARS LIVING RADIOISOTOPES |
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| Update Date: | 2009 Dec 16 |
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