A typical weather pattern for ozone pollution events in North China

Gong, Cheng; Liao, Hong

doi:https://doi.org/10.5194/acp-19-13725-2019

Articles | Volume 19, issue 22

https://doi.org/10.5194/acp-19-13725-2019

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

Special issue:

Regional transport and transformation of air pollution in...

https://doi.org/10.5194/acp-19-13725-2019

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

Articles | Volume 19, issue 22

Research article

|

14 Nov 2019

Research article |

| 14 Nov 2019

A typical weather pattern for ozone pollution events in North China

Cheng Gong and Hong Liao

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Final revised paper (published on 14 Nov 2019)
Supplement to the final revised paper
Preprint (discussion started on 03 Jul 2019)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Review', Anonymous Referee #1, 18 Jul 2019
- AC1: 'Interactive comment on “A typical weather pattern for the ozone pollution events in North China” by Cheng Gong and Hong Liao', Hong Liao, 18 Sep 2019
RC2: 'review', Anonymous Referee #2, 22 Jul 2019
- AC2: 'Interactive comment on “A typical weather pattern for the ozone pollution events in North China” by Cheng Gong and Hong Liao', Hong Liao, 18 Sep 2019

Peer-review completion

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

AR by Svenja Lange on behalf of the Authors (23 Sep 2019) Author's response

ED: Referee Nomination & Report Request started (08 Oct 2019) by Tong Zhu

RR by Anonymous Referee #2 (09 Oct 2019)

RR by Anonymous Referee #1 (09 Oct 2019)

ED: Publish subject to minor revisions (review by editor) (10 Oct 2019) by Tong Zhu

AR by Hong Liao on behalf of the Authors (11 Oct 2019) Author's response Manuscript

ED: Publish as is (12 Oct 2019) by Tong Zhu

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Short summary

Severe O₃ pollution events (OPEs) were observed frequently in summer in North China. We found a typical weather pattern that was responsible for the 21 OPEs observed in North China in May to July of 2014–2017. This weather pattern is characterized by high daily maximum temperature, low relative humidity and an anomalous high-pressure system at 500 hPa. Under such a weather pattern, chemical production of O₃ is high between 800 and 900 hPa, which is then transported downward to enhance O₃ levels.