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Title: Uptake of excess CO/sub 2/ by an outcrop-diffusion model of the ocean

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.
Authors:
Publication Date:
OSTI Identifier:OSTI ID: 5765731
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
Language:English
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 500200* -- Environment, Atmospheric-- Chemicals Monitoring & Transport-- (-1989)