Articles | Volume 17, issue 8
https://doi.org/10.5194/bg-17-2219-2020
https://doi.org/10.5194/bg-17-2219-2020
Research article
 | 
22 Apr 2020
Research article |  | 22 Apr 2020

Variable C∕P composition of organic production and its effect on ocean carbon storage in glacial-like model simulations

Malin Ödalen, Jonas Nycander, Andy Ridgwell, Kevin I. C. Oliver, Carlye D. Peterson, and Johan Nilsson

Model code and software

cGENIE.muffin v.0.9.5 M. Ödalen, J. Nycander, A. Ridgwell, K. I. C. Oliver, C. D. Peterson, and J. Nilsson https://doi.org/10.5281/zenodo.3235761

cGENIE release 1.9.1b A. Ridgwell, C. Peterson, B. Ward, and R. Jones https://doi.org/10.5281/zenodo.1407658

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Short summary
In glacial periods, ocean uptake of carbon is likely a key player for achieving low atmospheric CO2. In climate models, ocean biological uptake of carbon (C) and phosphorus (P) are often assumed to occur in fixed proportions. In this study, we allow the ratio of C : P to vary and simulate, to first approximation, the complex biological changes that occur in the ocean over long timescales. We show here that, for glacial–interglacial cycles, this complexity contributes to low atmospheric CO2.
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