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.
- Publication Date:
- OSTI Identifier:
- Resource Type:
- Journal Article
- Resource Relation:
- Journal Name: J. Geophys. Res.; (United States); Journal Volume: 88:C6
- Research Org:
- Physics Institute, University of Bern, Bern, Switzerland
- Country of Publication:
- United States
- 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 500200* -- Environment, Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
Enter terms in the toolbar above to search the full text of this document for pages containing specific keywords.