Articles | Volume 18, issue 16
https://doi.org/10.5194/acp-18-12391-2018
https://doi.org/10.5194/acp-18-12391-2018
Research article
 | 
27 Aug 2018
Research article |  | 27 Aug 2018

Wintertime photochemistry in Beijing: observations of ROx radical concentrations in the North China Plain during the BEST-ONE campaign

Zhaofeng Tan, Franz Rohrer, Keding Lu, Xuefei Ma, Birger Bohn, Sebastian Broch, Huabin Dong, Hendrik Fuchs, Georgios I. Gkatzelis, Andreas Hofzumahaus, Frank Holland, Xin Li, Ying Liu, Yuhan Liu, Anna Novelli, Min Shao, Haichao Wang, Yusheng Wu, Limin Zeng, Min Hu, Astrid Kiendler-Scharr, Andreas Wahner, and Yuanhang Zhang

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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Keding Lu on behalf of the Authors (28 Jun 2018)  Author's response   Manuscript 
ED: Referee Nomination & Report Request started (01 Jul 2018) by Steven Brown
RR by Anonymous Referee #1 (19 Jul 2018)
ED: Publish subject to minor revisions (review by editor) (20 Jul 2018) by Steven Brown
AR by Keding Lu on behalf of the Authors (24 Jul 2018)  Author's response   Manuscript 
ED: Publish as is (04 Aug 2018) by Steven Brown
AR by Keding Lu on behalf of the Authors (05 Aug 2018)  Manuscript 
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Short summary
We present the first wintertime OH, HO2, and RO2 measurements in Beijing, China. OH concentrations are nearly 2-fold larger than those observed in foreign cities during wintertime. The high OH and large OH reactivities indicate photochemical processes can be effective even during wintertime. A box model largely underestimated HO2 and RO2 concentrations during pollution episodes correlated with high NOx, indicating a deficit current chemistry in the high NOx regime.
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