Biogeosciences
Biogeosciences
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Articles | Volume 22, issue 22
Articles | Volume 22, issue 22
https://doi.org/10.5194/bg-22-7293-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-7293-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 22
Research article
 | 
27 Nov 2025
Research article |  | 27 Nov 2025

Assessing the efficacy of river-based ocean alkalinity enhancement for carbon sequestration under high emission pathways

Xiao-Yuan Zhu, Shasha Li, and Wei-Lei Wang

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Short summary
Ocean Alkalinity Enhancement (OAE) is a carbon dioxide removal (CDR) method that can simultaneously absorb CO2 and alleviate ocean acidification. Here, we evaluated the effectiveness of riverine OAE under high emission scenario in a fully coupled Earth System Model. The simulations show the riverine OAE effectively boosts ocean carbon uptake and partially combats ocean acidification, but continuous OAE is necessary to achieve the desired outcomes.
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