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

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

doi:10.5194/bg-22-7293-2025

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

Supplement

https://doi.org/10.5194/bg-22-7293-2025-supplement

Data sets

Assessing the efficacy of river-based ocean alkalinity enhancement for carbon sequestration under high emission pathways Xiao-Yuan Zhu https://doi.org/10.5281/zenodo.15550663

Video supplement

Assessing the efficacy of river-based ocean alkalinity enhancement for carbon sequestration under high emission pathways MP4 files Xiao-Yuan Zhu https://doi.org/10.5281/zenodo.17474918

Download

Article (3391 KB)
Full-text XML

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.