Unexpected chlorine chemistry in the lowest part of the atmosphere can affect the cycling of nitrogen oxides and the production of ozone, and reduce the lifetime of the greenhouse gas methane.
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von Glasow, R. Wider role for airborne chlorine. Nature 464, 168–169 (2010). https://doi.org/10.1038/464168a
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DOI: https://doi.org/10.1038/464168a
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