Articles | Volume 20, issue 6
https://doi.org/10.5194/acp-20-3793-2020
https://doi.org/10.5194/acp-20-3793-2020
Research article
 | 
31 Mar 2020
Research article |  | 31 Mar 2020

Summertime and wintertime atmospheric processes of secondary aerosol in Beijing

Jing Duan, Ru-Jin Huang, Yongjie Li, Qi Chen, Yan Zheng, Yang Chen, Chunshui Lin, Haiyan Ni, Meng Wang, Jurgita Ovadnevaite, Darius Ceburnis, Chunying Chen, Douglas R. Worsnop, Thorsten Hoffmann, Colin O'Dowd, and Junji Cao

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Latest update: 22 Nov 2024
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Short summary
We characterized secondary aerosol formation in Beijing. Our results showed that relative humidity (RH) and Ox have opposite effects on sulfate and nitrate formation in summer and winter. The wintertime more-oxidized OOA (MO-OOA) showed a good correlation with aerosol liquid water content (ALWC). Meanwhile, the dependence of less-oxidized OOA (LO-OOA) and the mass ratio of LO-OOA to MO-OOA in Ox both degraded when RH  > 60 %, suggesting that RH or ALWC may also affect LO-OOA formation.
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