Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 23, issue 13
Articles | Volume 23, issue 13
https://doi.org/10.5194/acp-23-7551-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-23-7551-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 13
Research article
 | 
11 Jul 2023
Research article |  | 11 Jul 2023

Evolution and chemical characteristics of organic aerosols during wintertime PM2.5 episodes in Shanghai, China: insights gained from online measurements of organic molecular markers

Shuhui Zhu, Min Zhou, Liping Qiao, Dan Dan Huang, Qiongqiong Wang, Shan Wang, Yaqin Gao, Shengao Jing, Qian Wang, Hongli Wang, Changhong Chen, Cheng Huang, and Jian Zhen Yu

Supplement

https://doi.org/10.5194/acp-23-7551-2023-supplement

Data sets

Online measurements data of organic molecular markers and other pollutants at SAES supersite during 2019-2020 wintertime episodes Shuhui Zhu and Jian Yu https://doi.org/10.14711/dataset/PXEV3I

Video abstract

Evolution and chemical characteristics of organic aerosols during wintertime PM2.5 episodes in Shanghai, China: Insights gained from online measurements of organic molecular markers Shuhui Zhu and Jian Zhen Yu https://doi.org/10.5446/62331

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Short summary
Organic aerosol (OA) is increasingly important in urban PM2.5 pollution as inorganic ions are becoming lower. We investigated the chemical characteristics of OA during nine episodes in Shanghai. The availability of bi-hourly measured molecular markers revealed that the control of local urban sources such as vehicular and cooking emissions lessened the severity of local episodes. Regional control of precursors and biomass burning would reduce PM2.5 episodes influenced by regional transport.
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