Articles | Volume 21, issue 20
https://doi.org/10.5194/bg-21-4621-2024
https://doi.org/10.5194/bg-21-4621-2024
Research article
 | 
25 Oct 2024
Research article |  | 25 Oct 2024

Hydrological cycle amplification imposes spatial patterns on the climate change response of ocean pH and carbonate chemistry

Allison Hogikyan and Laure Resplandy

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Cited articles

Broecker, W. S. and Peng, T.-H.: Interhemispheric transport of carbon dioxide by ocean circulation, Nature, 356, 587–589, 1992. a
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Chikamoto, M. O., DiNezio, P., and Lovenduski, N.: Long-Term Slowdown of Ocean Carbon Uptake by Alkalinity Dynamics, Geophys. Res. Lett., 50, e2022GL101954, https://doi.org/10.1029/2022GL101954, 2023. a
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Rising atmospheric CO2 influences ocean carbon chemistry, leading to ocean acidification. Global warming introduces spatial patterns in the intensity of ocean acidification. We show that the most prominent spatial patterns are controlled by warming-driven changes in rainfall and evaporation, not by the direct effect of warming on carbon chemistry and pH. These evaporation and rainfall patterns oppose acidification in saltier parts of the ocean and enhance acidification in fresher regions.
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