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

Abstract

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:
Research Org.:
Physics Institute, University of Bern, Bern, Switzerland
OSTI Identifier:
5765731
Resource Type:
Journal Article
Journal Name:
J. Geophys. Res.; (United States)
Additional Journal Information:
Journal Volume: 88:C6
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)

Citation Formats

Siegenthaler, U. Uptake of excess CO/sub 2/ by an outcrop-diffusion model of the ocean. United States: N. p., 1983. Web. doi:10.1029/JC088iC06p03599.
Siegenthaler, U. Uptake of excess CO/sub 2/ by an outcrop-diffusion model of the ocean. United States. doi:10.1029/JC088iC06p03599.
Siegenthaler, U. Wed . "Uptake of excess CO/sub 2/ by an outcrop-diffusion model of the ocean". United States. doi:10.1029/JC088iC06p03599.
@article{osti_5765731,
title = {Uptake of excess CO/sub 2/ by an outcrop-diffusion model of the ocean},
author = {Siegenthaler, U},
abstractNote = {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.},
doi = {10.1029/JC088iC06p03599},
journal = {J. Geophys. Res.; (United States)},
number = ,
volume = 88:C6,
place = {United States},
year = {1983},
month = {4}
}