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OCEANOGRAPHY

Hot and sour in the deep ocean

Stable layering in the ocean limits the rate that human-derived carbon dioxide can acidify the deep ocean. Now observations show that ocean warming, however, can enhance deep-ocean acidification through increased organic matter decomposition.

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Fig. 1: Schematics of effect of anthropogenic CO2 and organic matter decomposition on the ocean pH profiles.

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Acknowledgements

This work is supported by NOAA Climate Program Office and NOAA PMEL; PMEL contribution no. 4724.

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Correspondence to Christopher L. Sabine.

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Sabine, C.L. Hot and sour in the deep ocean. Nature Clim Change 7, 854–855 (2017). https://doi.org/10.1038/s41558-017-0018-4

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