Articles | Volume 18, issue 17
Atmos. Chem. Phys., 18, 12953–12967, 2018
https://doi.org/10.5194/acp-18-12953-2018
Atmos. Chem. Phys., 18, 12953–12967, 2018
https://doi.org/10.5194/acp-18-12953-2018

Research article 10 Sep 2018

Research article | 10 Sep 2018

Intermittent turbulence contributes to vertical dispersion of PM2.5 in the North China Plain: cases from Tianjin

Wei Wei et al.

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Short summary
Heavy particulate pollution events have frequently occurred in the North China Plain. Using the intermittency factor, we found that the turbulence during the transport stage is intermittent and not locally generated. Turbulence results from the wind shear of low-level jets and then transports downward, causing intermittent turbulence at lower levels. The intermittent turbulence contributes positively to the vertical dispersion of particulate matter and improves the air quality near the surface.
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