EGU2020-16757, updated on 22 Feb 2024
https://doi.org/10.5194/egusphere-egu2020-16757
EGU General Assembly 2020
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

McFAN experiment: An integrated analysis of the multiphase chemistry experiment in Fogs and Aerosols in the North China Plain

Hang Su1, Nan Ma2, Yele Sun3, Jiangchuan Tao2, Pingqing Fu4, and Yafang Cheng1
Hang Su et al.
  • 1Max Planck Institute for Chemistry, Mainz, Germany
  • 2Jinan University, Guangzhou, China
  • 3Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
  • 4Tianjin University, Tianjin, China

Fine-particle pollution associated with winter haze threatens the health of more than 400 million people in the North China Plain. The Multiphase chemistry experiment in Fogs and Aerosols in the North China Plain (McFAN) investigated the physical-chemical mechanisms leading to the haze formation with a focus on the contributions of multiphase processes in aerosol and fogs. We integrated multiple platform observations with regional and box models to identify the key oxidation process producing sulfate, nitrate and secondary organic aerosols, and their impact. A new environmental chamber was deployed to conduct kinetic experiments with real atmospheric compositions in comparison to literature kinetic data from laboratory studies. The experiments were carried out for multiple years since 2017 at the Gucheng site in the center of polluted areas and have performed experiments in the winter season. The location of the site minimizes fast transition between clean and polluted air masses (e.g., in Beijing), and helps to maintain a pollution regime representative for the North China Plain. The multi-year consecutive experiments documented the trend of PM2.5 pollution and corresponding change of aerosol physical and chemical properties, and allowed to investigate newly proposed mechanisms. The preliminary results show new proofs of the key role of aqueous phase reactions in regulating the aerosol compositions during haze events.

Reference:

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How to cite: Su, H., Ma, N., Sun, Y., Tao, J., Fu, P., and Cheng, Y.: McFAN experiment: An integrated analysis of the multiphase chemistry experiment in Fogs and Aerosols in the North China Plain, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-16757, https://doi.org/10.5194/egusphere-egu2020-16757, 2020.