Abstract

Rapid industrialization and urbanization in China has led to an increase in severe haze pollution that is influencing air quality, regional and global climates, and human health. Understanding of the temporal and spatial profiles of chemical composition and sources of fine particulate matter (PM), the mechanisms and atmospheric processes of substantial wintertime secondary aerosol production and the constraint of sources and formation processes of secondary organic aerosol (SOA) during haze events are essential for the design of effective mitigation strategies. In this chapter, recent studies associated with the aforementioned aspects are summarized and discussed. Future studies directing to a better understanding of the chemical nature, formation mechanisms, atmospheric processes and sources of PM are also discussed.

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