Uptake of excess CO/sub 2/ by an outcrop-diffusion model of the ocean
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.
- Research Organization:
- Physics Institute, University of Bern, Bern, Switzerland
- OSTI ID:
- 5765731
- Journal Information:
- J. Geophys. Res.; (United States), Vol. 88:C6
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)