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

Journal Article · Wed Apr 20 04:00:00 EST 1983 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JC088iC06p03599· OSTI ID:5765731

Siegenthaler, U

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), Journal Name: J. Geophys. Res.; (United States) Vol. 88:C6; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR-WATER INTERACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALIBRATION
CARBON 14
CARBON COMPOUNDS
CARBON CYCLE
CARBON DIOXIDE
CARBON ISOTOPES
CARBON OXIDES
CHALCOGENIDES
DIFFUSION
EVEN-EVEN NUCLEI
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
NUCLEI
NUMERICAL SOLUTION
ONE-DIMENSIONAL CALCULATIONS
OXIDES
OXYGEN COMPOUNDS
RADIOISOTOPES
YEARS LIVING RADIOISOTOPES