Articles | Volume 21, issue 11
Atmos. Chem. Phys., 21, 9253–9268, 2021
https://doi.org/10.5194/acp-21-9253-2021
Atmos. Chem. Phys., 21, 9253–9268, 2021
https://doi.org/10.5194/acp-21-9253-2021

Research article 16 Jun 2021

Research article | 16 Jun 2021

Elevated 3D structures of PM2.5 and impact of complex terrain-forcing circulations on heavy haze pollution over Sichuan Basin, China

Zhuozhi Shu et al.

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Ansmann, A., Seifert, P., Tesche, M., and Wandinger, U.: Profiling of fine and coarse particle mass: case studies of Saharan dust and Eyjafjallajökull/Grimsvötn volcanic plumes, Atmos. Chem. Phys., 12, 9399–9415, https://doi.org/10.5194/acp-12-9399-2012, 2012. 
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Focusing on a heavy haze pollution event in the Sichuan Basin (SCB), we investigated the elevated 3D structure of PM2.5 and trans-boundary transport with the WRF-Chem simulation. It is remarkable for vertical PM2.5 that the unique hollows were structured, which which occurred by the interaction of vortex circulations and topographic effects. The SCB was regarded as the major air pollutant source with the trans-boundary transport of PM2.5 affecting atmospheric environment changes.
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