Articles | Volume 22, issue 22
https://doi.org/10.5194/bg-22-7293-2025
https://doi.org/10.5194/bg-22-7293-2025
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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Cited articles

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Beusen, A. H. W., Van Beek, L. P. H., Bouwman, A. F., Mogollón, J. M., and Middelburg, J. J.: Coupling global models for hydrology and nutrient loading to simulate nitrogen and phosphorus retention in surface water – description of IMAGE–GNM and analysis of performance, Geosci. Model Dev., 8, 4045–4067, https://doi.org/10.5194/gmd-8-4045-2015, 2015. 
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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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