Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Atmos. Chem. Phys., 17, 8269-8283, 2017
https://doi.org/10.5194/acp-17-8269-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
07 Jul 2017
Changes to the chemical state of the Northern Hemisphere atmosphere during the second half of the twentieth century
Mike J. Newland et al.

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Short summary
We report increasing levels of alkyl nitrates in the Northern Hemisphere atmosphere between 1960 and the mid-1990s. These increases are symptomatic of large-scale changes to the chemical composition of the atmosphere, particularly with regards to the amounts of short-lived, reactive species. The observed increases are likely driven by increasing levels of nitrogen oxides. These changes have direct implications for the lifetimes of climate-relevant species in the atmosphere, such as methane.
We report increasing levels of alkyl nitrates in the Northern Hemisphere atmosphere between 1960...
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