Articles | Volume 20, issue 23
https://doi.org/10.5194/acp-20-14917-2020
https://doi.org/10.5194/acp-20-14917-2020
Research article
 | 
03 Dec 2020
Research article |  | 03 Dec 2020

Elevated dust layers inhibit dissipation of heavy anthropogenic surface air pollution

Zhuang Wang, Cheng Liu, Zhouqing Xie, Qihou Hu, Meinrat O. Andreae, Yunsheng Dong, Chun Zhao, Ting Liu, Yizhi Zhu, Haoran Liu, Chengzhi Xing, Wei Tan, Xiangguang Ji, Jinan Lin, and Jianguo Liu

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Short summary
Significant stratification of aerosols was observed in North China. Polluted dust dominated above the PBL, and anthropogenic aerosols prevailed within the PBL, which is mainly driven by meteorological conditions. The key role of the elevated dust is to alter atmospheric thermodynamics and stability, causing the suppression of turbulence exchange and a decrease in PBL height, especially during the dissipation stage, thereby inhibiting dissipation of persistent heavy surface haze pollution.
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