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Surface ocean pH and buffer capacity: past, present and future

Open access
Jiang, Li-Qing, Carter, Brendan R., Feely, Richard A., Lauvset, Siv K., Olsen, Are·2019·Scientific Reports

Abstract

The ocean’s chemistry is changing due to the uptake of anthropogenic carbon dioxide (CO 2). This phenomenon, commonly referred to as “Ocean Acidification”, is endangering coral reefs and the broader marine ecosystems. In this study, we combine a recent observational seawater CO 2 data product, i.e., the 6 th version of the Surface Ocean CO 2 Atlas (1991–2018, ~23 million observations), with temporal trends at individual locations of the global ocean from a robust Earth System Model to provide a high-resolution regionally varying view of global surface ocean pH and the Revelle Factor. The climatology extends from the pre-Industrial era (1750 C.E.) to the end of this century under historical atmospheric CO 2 concentrations (pre-2005) and the Representative Concentrations Pathways (post-2005) of the Intergovernmental Panel on Climate Change (IPCC)’s 5 th Assessment Report. By linking the modeled pH trends to the observed modern pH distribution, the climatology benefits from recent improvements in both model design and observational data coverage, and is likely to provide improved regional OA trajectories than the model output could alone, therefore, will help guide the regional OA adaptation strategies. We show that air-sea CO 2 disequilibrium is the dominant mode of spatial variability for surface pH, and discuss why pH and calcium carbonate mineral saturation states, two important metrics for OA, show contrasting spatial variability.

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Metadata

Authors
Jiang, L.-Q., Carter, B. R., Feely, R. A., Lauvset, S. K., & Olsen, A.
Venue
Scientific Reports
Published
2019-12-09
Volume
9
Issue
1
Pages
18624-18624
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2993294110
Cited by
435
References
36
FWCI
19.60
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Surface ocean pH and buffer capacity: past, present and future. https://app.cochat.ai/papers/10.1038/s41598-019-55039-4
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Jiang, L.-Q., Carter, B. R., Feely, R. A., Lauvset, S. K., & Olsen, A. (2019). Surface ocean pH and buffer capacity: past, present and future. Scientific Reports. https://doi.org/10.1038/s41598-019-55039-4

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