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

Xu, Xiaohong; Zhang, Tianchu; Su, Yushan

doi:https://doi.org/10.5194/acp-19-7335-2019

Articles | Volume 19, issue 11

https://doi.org/10.5194/acp-19-7335-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-19-7335-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 11

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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Final revised paper (published on 04 Jun 2019)
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Preprint (discussion started on 22 Nov 2018)
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Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Referee comment', Anonymous Referee #2, 27 Dec 2018
- AC2: 'Reply to comments on “Long-term measurements of ground-level ozone in Windsor, Canada – Part I. temporal variations and trends” by Xiaohong Xu et al.', X. Xu, 06 Mar 2019
RC2: 'Referee #1 comments', Anonymous Referee #1, 23 Jan 2019
- AC3: 'Reply to comments on “Long-term measurements of ground-level ozone in Windsor, Canada – Part I. temporal variations and trends” by Xiaohong Xu et al.', X. Xu, 06 Mar 2019

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Anna Mirena Feist-Polner on behalf of the Authors (15 Mar 2019) Author's response Manuscript

ED: Publish subject to technical corrections (07 May 2019) by Min Shao

AR by X. Xu on behalf of the Authors (13 May 2019) Author's response Manuscript

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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, NO_x (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 NO_x concentrations, (2) reduced local photochemical production of O₃ because of dwindling precursor emissions, and (3) increased background O₃ level.