Articles | Volume 17, issue 14
https://doi.org/10.5194/acp-17-8825-2017
https://doi.org/10.5194/acp-17-8825-2017
Research article
 | 
20 Jul 2017
Research article |  | 20 Jul 2017

Observations of particles at their formation sizes in Beijing, China

Rohan Jayaratne, Buddhi Pushpawela, Congrong He, Hui Li, Jian Gao, Fahe Chai, and Lidia Morawska

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Subject: Aerosols | Research Activity: Field Measurements | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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Cited articles

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Observations over a continuous 3-month period in Beijing showed 26 new particle formation (NPF) events, generally coinciding with periods with relatively clean air when the wind direction was from the less industrialized north. Large particles in the atmosphere suppress the gaseous supersaturation that is required for NPF. No events were observed when the daily mean PM2.5 concentration exceeded 43 µg m−3. These results provide useful insight into the formation of haze events in megacities.
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