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In this study HAMOCC2.0 is used to address how mechanisms of oxygen minimum zone (OMZ) expansion respond to changes in CO2 radiative forcing within the model. Atmospheric pCO2 is increased at a rate of 1 % annually until stabilized. Our study suggests that expansion in the Pacific Ocean within the model is controlled largely by changes in particulate organic carbon export (POC). The vertical expansion of the OMZs in the Atlantic and Indian oceans is linked to reduced oxygen solubility.
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Articles | Volume 14, issue 4
Biogeosciences, 14, 781–797, 2017
https://doi.org/10.5194/bg-14-781-2017
Biogeosciences, 14, 781–797, 2017
https://doi.org/10.5194/bg-14-781-2017

Research article 22 Feb 2017

Research article | 22 Feb 2017

Response of export production and dissolved oxygen concentrations in oxygen minimum zones to pCO2 and temperature stabilization scenarios in the biogeochemical model HAMOCC 2.0

Teresa Beaty et al.

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Cited articles

Arakawa, A. and Lamb, V.: Computational design of the basic dynamical processes of the UCLA General Circulation Model, Methods in Computational Physics, 17, 174–267, 1977.
Archer, D.: Fate of fossil fuel CO2 in geologic time, J. Geophys. Res.-Oceans, 110, C09S05, https://doi.org/10.1029/2004JC002625, 2005.
Archer, D., Eby, M., Brovkin, V., Ridgwell, A., Cao, L., Mikolajewicz, U., Caldeira, K., Matsumoto, K., Munhoven, G., and Montenegro, A.: Atmospheric lifetime of fossil fuel carbon dioxide, Annu. Rev. Earth Planet. Sc., 37, 117–134, https://doi.org/10.1146/annurev.earth.031208.100206, 2009.
Beaty-Sykes, T. M.: Effects of climate change and perturbation in biogeochemical cycles on oxygen distribution and ocean acidification, PhD Dissertation, University of Texas, Arlington, 2014.
Bopp, L., Le Quéré, C., Heimann, M., Manning, A. C., and Monfray, P.: Climate-induced oceanic oxygen fluxes: Implications for the contemporary carbon budget, Global Biogeochem. Cy., 16, 1022, https://doi.org/10.1029/2001GB001445, 2002.
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Short summary
In this study HAMOCC2.0 is used to address how mechanisms of oxygen minimum zone (OMZ) expansion respond to changes in CO2 radiative forcing within the model. Atmospheric pCO2 is increased at a rate of 1 % annually until stabilized. Our study suggests that expansion in the Pacific Ocean within the model is controlled largely by changes in particulate organic carbon export (POC). The vertical expansion of the OMZs in the Atlantic and Indian oceans is linked to reduced oxygen solubility.
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