Articles | Volume 20, issue 23
Atmos. Chem. Phys., 20, 14917–14932, 2020
https://doi.org/10.5194/acp-20-14917-2020
Atmos. Chem. Phys., 20, 14917–14932, 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 et al.

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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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