Analytical relationships between atmospheric carbon dioxide, carbon emissions, and ocean processes

Goodwin, Philip, Follows, Michael J. and Williams, Richard G. (2008) Analytical relationships between atmospheric carbon dioxide, carbon emissions, and ocean processes. Global Biogeochemical Cycles, 22 (3). ISSN 1944-9224

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Abstract

Carbon perturbations leading to an increase in atmospheric CO2 are partly offset by the carbon uptake by the oceans and the rest of the climate system. Atmospheric CO2 approaches a new equilibrium state, reached after ocean invasion ceases after typically 1000 years, given by P CO2 = P 0exp(dI ? /I B ), where P 0 and P CO2 are the initial and final partial pressures of atmospheric CO2, dI ? is a CO2 perturbation, and I B is the buffered carbon inventory of the air-sea system. The perturbation, dI ? , includes carbon emissions and changes in the terrestrial reservoir, as well as ocean changes in the surface carbon disequilibrium and fallout of organic soft tissue material. Changes in marine calcium carbonate, dI CaCO3, lead to a more complex relationship with atmospheric CO2, where P CO2 is changed by the ratio P CO2 = P 0{I O(A - C)/(I O(A - C) - dI CaCO3)} and then modified by a similar exponential relationship, where I O(A - C) is the difference between the inventories of titration alkalinity and dissolved inorganic carbon. The overall atmospheric P CO2 response to a range of perturbations is sensitive to their nonlinear interactions, depending on the product of the separate amplification factors for each perturbation.

Item Type: Article
Faculty \ School: Faculty of Science > School of Environmental Sciences
Depositing User: Rosie Cullington
Date Deposited: 25 Feb 2011 11:05
Last Modified: 22 Apr 2020 14:19
URI: https://ueaeprints.uea.ac.uk/id/eprint/24744
DOI: 10.1029/2008GB003184

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