The detailed formation mechanism of an increased number of haze events in China is still
not very clear. Here, we found that reduced surface visibility from 1980 to 2010 and an …

China experienced severe haze pollution in January 2013. Here we have a detailed
characterization of the sources and evolution mechanisms of this haze pollution with a focus …

We characterize a representative particulate matter (PM) episode that occurred in Shanghai
during winter 2014. Particle size distribution, hygroscopicity, effective density, and single …

Aerosol size distribution and chemical composition are found to have significant effects on
its hygroscopicity, acidity/alkalinity and light extinction. Heavy haze pollution occurred …

This paper explores the role of the secondary inorganic aerosol (SIA) species ammonium,
NH 4+, nitrate, NO 3−, and sulfate, SO 4 2−, during haze and fog events using hourly mass …

Secondary inorganic aerosols, including sulfate, nitrate, and ammonium contribute to a large
extent to the severe haze pollution events in China. Understanding their formation …

Extremely severe haze weather events occurred in many cities in China, especially in the
east part of the country, in January 2013. Comprehensive measurements including hourly …

Severe wintertime haze events with exceedingly high levels of aerosols have occurred
frequently in China in recent years, impacting human health, weather, and the climate. A …

Severe hazes occurred during 2016–2017 winter manifested winter haze was still a tough
challenge in Beijing since the unprecedented haze in January 2013. Three haze episodes …

To elucidate the formation mechanism of haze and the important role of atmospheric
humidity in haze formation, comprehensive observations were carried out at regional sites in …