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

Goodwin, P. and Follows, M.J. and Williams, R.G. (2008) Analytical relationships between atmospheric carbon dioxide, carbon emissions, and ocean processes. Global Biogeochemical Cycles, 22 (3). GB3030. DOI 10.1029/2008GB003184

[img] PDF
Goodwin_04_2008GB003184.pdf
Restricted to Registered users only

Download (386kB)

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 PCO2 - P0exp(δIχ/IB), where P0 and pco2 are the initial and final partial pressures of atmospheric CO2, δIχ is a CO2 perturbation, and IB is the buffered carbon inventory of the air-sea system. The perturbation, δIχ, 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, δICaco3, lead to a more complex relationship with atmospheric CO2, where PCO2 is changed by the ratio PCO2 = P0{IO(A - C)/{IO(A - C) - δICaCO3)} and then modified by a similar exponential relationship, where IO(A - C) is the difference between the inventories of titration alkalinity and dissolved inorganic carbon. The overall atmospheric PCO2 response to a range of perturbations is sensitive to their nonlinear interactions, depending on the product of the separate amplification factors for each perturbation. Copyright 2008 by the American Geophysical Union.

Item Type: Article
Uncontrolled Keywords: NILAREP
Subjects: 01 - Climate Change and Earth-Ocean Atmosphere Systems
Divisions: 01 - Climate Change and Earth-Ocean Atmosphere Systems
Journal or Publication Title: Global Biogeochemical Cycles
Volume: 22
Page Range: GB3030
Identification Number: 10.1029/2008GB003184
Depositing User: Sarah Humbert
Date Deposited: 20 Dec 2011 13:42
Last Modified: 23 Jul 2013 10:03
URI: http://eprints.esc.cam.ac.uk/id/eprint/2299

Actions (login required)

View Item View Item

About cookies