Severe winter haze days in the Beijing–Tianjin–Hebei region from 1985 to 2017 and the roles of anthropogenic emissions and meteorology

Dang, Ruijun; Liao, Hong

doi:https://doi.org/10.5194/acp-19-10801-2019

Articles | Volume 19, issue 16

https://doi.org/10.5194/acp-19-10801-2019

© 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-19-10801-2019

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

Articles | Volume 19, issue 16

Research article

|

27 Aug 2019

Research article |

| 27 Aug 2019

Severe winter haze days in the Beijing–Tianjin–Hebei region from 1985 to 2017 and the roles of anthropogenic emissions and meteorology

Ruijun Dang and Hong Liao

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Final revised paper (published on 27 Aug 2019)
Supplement to the final revised paper
Preprint (discussion started on 30 Apr 2019)
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Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Review of "Severe winter haze days in the Beijing-Tianjin-Hebei region from 1985-2017 and the roles of anthropogenic emissions and meteorological parameters" by Dang and Liao', Anonymous Referee #1, 17 May 2019
- AC1: 'Response to RC1', Hong Liao, 22 Jul 2019
RC2: 'Review of Dang and Liao', Anonymous Referee #2, 28 May 2019
- AC2: 'Response to RC2', Hong Liao, 22 Jul 2019

Peer-review completion

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

AR by Hong Liao on behalf of the Authors (22 Jul 2019) Author's response Manuscript

ED: Publish as is (29 Jul 2019) by Hailong Wang

AR by Hong Liao on behalf of the Authors (30 Jul 2019)

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Short summary

We used a global chemical transport model to examine the historical changes in severe winter haze days (SWHDs) in Beijing–Tianjin–Hebei (BTH) in China. Simulated frequency of SWHDs in BTH showed an increasing trend over 1985–2017 with obvious fluctuations. We found that meteorology has dominated the frequency decrease in 1992–2001, and both anthropogenic emissions and meteorology contributed to the increase in 2003–2012. These results have important implications for the control of SWHDs in BTH.