Articles | Volume 19, issue 11
https://doi.org/10.5194/acp-19-7335-2019
https://doi.org/10.5194/acp-19-7335-2019
Research article
 | 
04 Jun 2019
Research article |  | 04 Jun 2019

Temporal variations and trend of ground-level ozone based on long-term measurements in Windsor, Canada

Xiaohong Xu, Tianchu Zhang, and Yushan Su

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Cited articles

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Short summary
This study investigates temporal variations and long-term trends in O3 (ozone) and its precursors in Windsor, Canada. During the 1996–2015 period, NOx (nitric oxides) and non-methane hydrocarbon concentrations decreased by 58 % and 61 %, respectively. Annual O3 concentrations increased by 33 % due to (1) decreased O3 titration owing to declining NOx concentrations, (2) reduced local photochemical production of O3 because of dwindling precursor emissions, and (3) increased background O3 level.
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