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Atmospheric chemistry

A fly in the ozone and climate ointment

The Montreal Protocol has successfully guided the world’s transition from chlorofluorcarbons that deplete ozone to hydrofluorocarbons that pose no direct threat to the ozone layer. A study suggests that a recent rise in atmospheric chlorofluorcarbons is linked to the inadvertent release of these gases during the production of hydrofluorocarbons.

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Fig. 1: Ozone and climate impacts of the five CFCs measured by Western et al.2.

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Correspondence to Ross J. Salawitch.

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Salawitch, R.J. A fly in the ozone and climate ointment. Nat. Geosci. 16, 278–279 (2023). https://doi.org/10.1038/s41561-023-01165-8

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