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Articles | Volume 23, issue 10
Articles | Volume 23, issue 10
https://doi.org/10.5194/bg-23-3299-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-3299-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 10
Research article
 | 
18 May 2026
Research article |  | 18 May 2026

The efficiency and ocean acidification mitigation potential of ocean alkalinity enhancement on multi-centennial timescales

Hendrik Grosselindemann, Friedrich A. Burger, and Thomas L. Frölicher

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Short summary
We assess the long-term carbon cycle, climate and ocean acidification response of ocean alkalinity enhancement (OAE) using an emission-driven Earth system model across warming stabilization scenarios. OAE lowers atmospheric CO2 and produces a scenario-independent linear cooling. Gross carbon capture efficiency remains high, while net efficiencies decline over time due to carbon-cycle feedbacks. Ocean acidification mitigation by OAE is dominated by CO2 drawdown on long timescales.
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