Articles | Volume 18, issue 10
Atmos. Chem. Phys., 18, 7573–7593, 2018
https://doi.org/10.5194/acp-18-7573-2018

Special issue: Regional transport and transformation of air pollution in...

Atmos. Chem. Phys., 18, 7573–7593, 2018
https://doi.org/10.5194/acp-18-7573-2018

Research article 31 May 2018

Research article | 31 May 2018

Climatological study of the Boundary-layer air Stagnation Index for China and its relationship with air pollution

Qianqian Huang et al.

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Latest update: 12 Apr 2021
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Short summary
Air stagnation index is a vital meteorological measure of the atmosphere's ability to dilute air pollutants. We propose a Boundary-layer air Stagnation Index (BSI) based on daily maximal ventilation, real latent instability and precipitation. The BSI is positively correlated with API during 2000–2012, tracks the day-by-day variation of PM2.5 concentration during January 2013 in Beijing well, and successfully represents the improved air quality during November and December in 2017.
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