Is water vapor a key player of the wintertime haze in North China Plain?

Wu, Jiarui; Bei, Naifang; Hu, Bo; Liu, Suixin; Zhou, Meng; Wang, Qiyuan; Li, Xia; Liu, Lang; Feng, Tian; Liu, Zirui; Wang, Yichen; Cao, Junji; Tie, Xuexi; Wang, Jun; Molina, Luisa T.; Li, Guohui

doi:https://doi.org/10.5194/acp-19-8721-2019

Articles | Volume 19, issue 13

https://doi.org/10.5194/acp-19-8721-2019

© 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-19-8721-2019

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

Articles | Volume 19, issue 13

Research article

|

10 Jul 2019

Research article |

| 10 Jul 2019

Is water vapor a key player of the wintertime haze in North China Plain?

Jiarui Wu, Naifang Bei, Bo Hu, Suixin Liu, Meng Zhou, Qiyuan Wang, Xia Li, Lang Liu, Tian Feng, Zirui Liu, Yichen Wang, Junji Cao, Xuexi Tie, Jun Wang, Luisa T. Molina, and Guohui Li

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Final revised paper (published on 10 Jul 2019)
Preprint (discussion started on 14 Feb 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, 22 Mar 2019
- AC3: 'Reply2Referees-acp-2018-1289', Guohui Li, 26 May 2019
RC2: 'review of "Is water vapor a key player of the wintertime haze in North China Plain?"', Anonymous Referee #3, 15 Apr 2019
- AC2: 'Reply2Referees-acp-2018-1289', Guohui Li, 26 May 2019
AC1: 'Reply2Referees-acp-2018-1289', Guohui Li, 26 May 2019

Peer-review completion

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

AR by Guohui Li on behalf of the Authors (26 May 2019) Author's response Manuscript

ED: Publish as is (06 Jun 2019) by Renyi Zhang

AR by Guohui Li on behalf of the Authors (10 Jun 2019) Manuscript

Short summary

The near-surface PM_2.5 contribution of the ALW total effect is 17.5 % in NCP, indicating that ALW plays an important role in the PM_2.5 formation during the wintertime haze pollution. Moreover, the ALW-HET overwhelmingly dominates the PM_2.5 enhancement due to the ALW. The ALW does not consistently enhance near-surface [PM_2.5] with increasing RH. When the RH exceeds 80 %, the contribution of the ALW begins to decrease, which is caused by the high occurrence frequencies of precipitation.