Retrieving tropospheric NO2 vertical column densities around the city of Beijing and estimating NOx emissions based on car MAX-DOAS measurements

Cheng, Xinghong; Ma, Jianzhong; Jin, Junli; Guo, Junrang; Liu, Yuelin; Peng, Jida; Ma, Xiaodan; Qian, Minglong; Xia, Qiang; Yan, Peng

doi:https://doi.org/10.5194/acp-20-10757-2020

Articles | Volume 20, issue 17

https://doi.org/10.5194/acp-20-10757-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-20-10757-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 17

Research article

|

14 Sep 2020

Research article |

| 14 Sep 2020

Retrieving tropospheric NO₂ vertical column densities around the city of Beijing and estimating NO_x emissions based on car MAX-DOAS measurements

Xinghong Cheng, Jianzhong Ma, Junli Jin, Junrang Guo, Yuelin Liu, Jida Peng, Xiaodan Ma, Minglong Qian, Qiang Xia, and Peng Yan

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Final revised paper (published on 14 Sep 2020)
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Preprint (discussion started on 22 Jun 2020)
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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: 'Review of Retrieving tropospheric NO2 vertical column densities around the city of Beijing and estimating NOX emissions based on car MAX-DOAS measurements', Anonymous Referee #2, 17 Jul 2020
- AC1: 'Response to Anonymous Referee #2', X.H. Cheng, 17 Aug 2020
RC2: 'review on "Retrieving tropospheric NO2 vertical column densities around the city of Beijing and estimating NOX emissions based on car MAX-DOAS measurements"', Anonymous Referee #1, 19 Jul 2020
- AC2: 'Response to Anonymous Referee #1', X.H. Cheng, 17 Aug 2020

Peer-review completion

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

AR by X.H. Cheng on behalf of the Authors (19 Aug 2020) Author's response Manuscript

ED: Publish subject to technical corrections (28 Aug 2020) by Robert McLaren

AR by X.H. Cheng on behalf of the Authors (31 Aug 2020) Author's response Manuscript

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Short summary

We carried out 19 city-circle-around Car MAX-DOAS experiments on the 6th Ring Road of Beijing in Jan, Sep, and Oct 2014. The tropospheric VCDs of NO₂ are retrieved and their temporal and spatial distributions are investigated. Then the NO_x emission rates in urban Beijing are estimated using the measured NO₂ VCDs together with the refined wind fields, NO₂-to-NO_x ratios, and NO₂ lifetimes simulated by the LAPS-WRF-CMAQ model system, and results are compared with the MEIC inventory in 2012.