Articles | Volume 22, issue 20
https://doi.org/10.5194/bg-22-5723-2025
https://doi.org/10.5194/bg-22-5723-2025
Research article
 | 
21 Oct 2025
Research article |  | 21 Oct 2025

Impulse response functions as a framework for quantifying ocean-based carbon dioxide removal

Elizabeth Yankovsky, Mengyang Zhou, Michael Tyka, Scott Bachman, David T. Ho, Alicia Karspeck, and Matthew C. Long

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Cited articles

Bach, L. T.: The additionality problem of ocean alkalinity enhancement, Biogeosciences, 21, 261–277, https://doi.org/10.5194/bg-21-261-2024, 2024. a, b
Bach, L. T., Gill, S. J., Rickaby, R. E. M., Gore, S., and Renforth, P.: CO2 Removal With Enhanced Weathering and Ocean Alkalinity Enhancement: Potential Risks and Co-benefits for Marine Pelagic Ecosystems, Frontiers in Climate, 1, https://doi.org/10.3389/fclim.2019.00007, 2019. a
Bach, L. T., Ho, D. T., Boyd, P. W., and Tyka, M. D.: Toward a consensus framework to evaluate air–sea CO2 equilibration for marine CO2 removal, Limnology and Oceanography Letters, 8, 685–691, https://doi.org/10.1002/lol2.10330, 2023. a
Berger, M., Kwiatkowski, L., Ho, D. T., and Bopp, L.: Ocean dynamics and biological feedbacks limit the potential of macroalgae carbon dioxide removal, Environmental Research Letters, 18, 024039, https://doi.org/10.1088/1748-9326/acb06e, 2023. a
Berner, R. A., Lasaga, A. C., and Garrels, R. M.: The carbonate-silicate geochemical cycle and its effect on atmospheric carbon dioxide over the past 100 million years, American Journal of Science, 283, 641–683, https://doi.org/10.2475/ajs.283.7.641, 1983. a
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Ocean alkalinity enhancement (OAE) is a promising strategy for ocean-based carbon dioxide removal, as it attempts to accelerate a natural process operating on Earth and may have climatically significant scalability. However, our best strategy for assessing OAE effects involves running computationally expensive climate models. We develop a powerful statistical technique that is able to encapsulate the climatic response to OAE interventions, thus simplifying the OAE carbon accounting problem.
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