Articles | Volume 18, issue 14
Biogeosciences, 18, 4389–4429, 2021
Biogeosciences, 18, 4389–4429, 2021

Research article 28 Jul 2021

Research article | 28 Jul 2021

Incorporating the stable carbon isotope 13C in the ocean biogeochemical component of the Max Planck Institute Earth System Model

Bo Liu et al.

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Cited articles

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Short summary
We incorporate a new representation of the stable carbon isotope 13C in a global ocean biogeochemistry model. The model well reproduces the present-day 13C observations. We find a recent observation-based estimate of the oceanic 13C Suess effect (the decrease in 13C/12C ratio due to uptake of anthropogenic CO2; 13CSE) possibly underestimates 13CSE by 0.1–0.26 per mil. The new model will aid in better understanding the past ocean state via comparison to 13C/12C measurements from sediment cores.
Final-revised paper