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Natural control on ozone pollution

For years, halogens have been known as destroyers of ‘good’ ozone, which acts as an upper-atmosphere shield from harmful ultraviolet radiation. Research now shows that natural halogen compounds emitted from the ocean help to control ‘bad’ ozone pollution at ground level and may continue to do so at a similar rate in future climate.

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Fig. 1: Ground-level ozone is found with other pollutants in photochemical smog, seen here in Amritsar, India.

Paul Kennedy / Alamy Stock Photo

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Correspondence to Andrea Stenke.

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Stenke, A. Natural control on ozone pollution. Nat. Clim. Chang. 10, 101–102 (2020). https://doi.org/10.1038/s41558-019-0686-3

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