Assessing the formation and evolution mechanisms of severe haze pollution in the Beijing–Tianjin–Hebei region using process analysis

Chen, Lei; Zhu, Jia; Liao, Hong; Gao, Yi; Qiu, Yulu; Zhang, Meigen; Liu, Zirui; Li, Nan; Wang, Yuesi

doi:https://doi.org/10.5194/acp-19-10845-2019

Articles | Volume 19, issue 16

https://doi.org/10.5194/acp-19-10845-2019

© 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-19-10845-2019

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

Articles | Volume 19, issue 16

Research article

| Highlight paper

|

28 Aug 2019

Research article | Highlight paper |

| 28 Aug 2019

Assessing the formation and evolution mechanisms of severe haze pollution in the Beijing–Tianjin–Hebei region using process analysis

Lei Chen, Jia Zhu, Hong Liao, Yi Gao, Yulu Qiu, Meigen Zhang, Zirui Liu, Nan Li, and Yuesi Wang

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Final revised paper (published on 28 Aug 2019)
Supplement to the final revised paper
Preprint (discussion started on 28 Mar 2019)
Supplement to the preprint

Interactive discussion

Status: closed

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

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RC1: 'Review_acp-2019-245', Anonymous Referee #1, 20 Apr 2019
- AC1: 'Reply to Reviewer #1', Hong Liao, 04 Jul 2019
RC2: 'Review on Chen et al.', Anonymous Referee #2, 21 Apr 2019
- AC2: 'Reply to Reviewer #2', Hong Liao, 04 Jul 2019
RC3: 'Comments on acp-2019-245', Anonymous Referee #3, 04 May 2019
- AC3: 'Reply to Reviewer #3', Hong Liao, 04 Jul 2019

Peer-review completion

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

AR by Hong Liao on behalf of the Authors (04 Jul 2019) Author's response Manuscript

ED: Publish as is (20 Jul 2019) by Zhanqing Li

AR by Hong Liao on behalf of the Authors (24 Jul 2019) Manuscript

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Short summary

The formation mechanism of a severe haze episode that occurred over North China in December 2015, the aerosol radiative impacts on the haze event and the influence mechanism were examined. The PM_2.5 increase during the aerosol accumulation stage was mainly attributed to strong production by the aerosol chemistry process and weak removal by advection and vertical mixing. Restrained vertical mixing was the main reason for near-surface PM_2.5 increase when aerosol radiative feedback was considered.