Articles | Volume 20, issue 24
Atmos. Chem. Phys., 20, 15793–15809, 2020
https://doi.org/10.5194/acp-20-15793-2020
Atmos. Chem. Phys., 20, 15793–15809, 2020
https://doi.org/10.5194/acp-20-15793-2020

Research article 18 Dec 2020

Research article | 18 Dec 2020

A foehn-induced haze front in Beijing: observations and implications

Ju Li et al.

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A haze front in Beijing Ju Li https://doi.org/10.5446/49791

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Short summary
We analyzed a haze front event involving warm–dry downslope flow in December 2015 in Beijing, China. The haze front was formed by the collision between a clean warm–dry air mass flowing from a nearby mountainous region and a polluted cold–wet air mass over an urban area. We found that the polluted air advanced toward the clean air, resulting in a severe air pollution event. Our study highlights the need to further investigate the warm–dry downslope and its impacts on air pollution.
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