Extreme haze pollution in Beijing during January 2013: chemical characteristics, formation mechanism and role of fog processing
نویسنده
چکیده
K. Huang, G. Zhuang, Q. Wang, J. S. Fu, Y. Lin, T. Liu, L. Han, and C. Deng Center for Atmospheric Chemistry Study, Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China Department of Civil and Environmental Engineering, The University of Tennessee, Knoxville, TN, 37996, USA College of Environmental & Energy Engineering, Beijing University of Technology, Beijing 100124, China
منابع مشابه
Aerosol physicochemical properties and implications for visibility during an intense haze episode during winter in Beijing
The evolution of physical, chemical and optical properties of urban aerosol particles was characterized during an extreme haze episode in Beijing, PRC, from 24 through 31 January 2013 based on in situ measurements. The average mass concentrations of PM1, PM2.5 and PM10 were 99± 67 μg m (average±SD), 188± 128 μg m and 265± 157 μg m, respectively. A significant increase in PM1−2.5 fraction was ob...
متن کاملHeterogeneous chemistry: a mechanism missing in current models to explain secondary inorganic aerosol formation during the January 2013 haze episode in North China
Severe regional haze pollution events occurred in eastern and central China in January 2013, which had adverse effects on the environment and public health. Extremely high levels of particulate matter with aerodynamic diameter of 2.5 μm or less (PM2.5) with dominant components of sulfate and nitrate are responsible for the haze pollution. Although heterogeneous chemistry is thought to play an i...
متن کاملChemical characteristics of PM2.5 and PM10 in haze-fog episodes in Beijing.
Aerosol samples of PM2.5 and PM10 in a period of intensive haze-fog (HF) events were collected to investigate the chemical characteristics of air pollution in Beijing. The air quality in HF episodes was much worse than that in nonhaze-fog (NHF) days. The concentrations of elements and water-soluble (WS) ions (K+, So4(2-), and NO3-) in HF episodes were more than 10 times higher than those in NHF...
متن کاملRapid formation and evolution of an extreme haze episode in Northern China during winter 2015
We investigate the rapid formation and evolutionary mechanisms of an extremely severe and persistent haze episode that occurred in northern China during winter 2015 using comprehensive ground and vertical measurements, along with receptor and dispersion model analysis. Our results indicate that the life cycle of a severe winter haze episode typically consists of four stages: (1) rapid formation...
متن کاملAnalysis of a winter regional haze event and its formation mechanism in the North China Plain
A regional haze episode occurred in the Beijing, Tianjin and Hebei province (BTH) area in the North China Plain (NCP) from 16 to 19 January 2010. Data were collected and analyzed during the time frame of 14 through 23 January 2010 to include the haze event. The increase of secondary inorganic pollutants (SO 4 , NO − 3 , NH + 4 ) in PM2.5 was observed simultaneously at four sites, especially in ...
متن کامل