articleJournal of Geophysical Research AtmospheresMar 25, 2014Closed access

Investigation of the sources and evolution processes of severe haze pollution in Beijing in January 2013

Chinese Academy of Sciences · Nanjing University of Information Science and Technology · +2 more institutions

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Abstract

Abstract 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 on four haze episodes that occurred during 10–14 January in Beijing. The main source of data analyzed is from submicron aerosol measurements by an Aerodyne Aerosol Chemical Speciation Monitor. The average PM1 mass concentration during the four haze episodes ranged from 144 to 300 µg m −3 , which was more than 10 times higher than that observed during clean periods. All submicron aerosol species showed substantial increases during haze episodes with sulfate being the largest. Secondary inorganic species played enhanced roles in the…

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