Characterization of submicron aerosols and effect on visibility during a severe haze-fog episode in Yangtze River Delta, China (SCI)

CORC > 寒区旱区环境与工程研究所 > 中科院寒区旱区环境与工程研究所（未分类） > 期刊论文

	Characterization of submicron aerosols and effect on visibility during a severe haze-fog episode in Yangtze River Delta, China (SCI)
	Shen X. J.; Sun J. Y.; Zhang X. Y.; Zhang Y. M.; Zhang L.; Che H. C.; Ma Q. L.; Yu X. M.; Yue Y.; Zhang Y. W.
刊名	Atmospheric Environment
	2015
卷号	120 页码:307-316
英文摘要	Particle size, composition and optical properties were measured at a regional atmosphere background station in the Yangtze River Delta (YRD) to understand the formation and evolution of haze-fog episodes in Jan. 2013. The peak of particle number size distribution was in the size range of 80-100 nm during the measurements. PM1 mass concentration contributed 84% to the total particle mass (PM10). Based on visibility and ambient relative humidity, three types of weather conditions (i.e., clear, haze and fog) were classified in this study. The extinction coefficients of PM1 and PM10 under dry conditions were simulated by the Mie model. Under dry conditions, PM1 was found to contribute approximately 91% to the light extinction coefficient of PM10. However, the PM1 with the assumption of dry state was found to contribute approximately 85% to the ambient extinction coefficient of PM10 during clear conditions, 58% during haze conditions and approximately 41% during fog conditions. The variation of the dry PM1 contribution was related to the water uptake of particles under different relative humidity conditions. A severe haze-fog event on Jan. 14-17 was discussed in more detail as a case study. Two episodes were chosen to show that nitrate and organics dominated the aerosol component during the severe haze-fog episode and were related to secondary aerosol formation and air mass origin. Nitrate played a more dominant role than sulfate in heavy haze formation in the YRD region, which was different from the North China Plain region. (C) 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.casnw.net/handle/362004/27468]
专题	寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文
推荐引用方式 GB/T 7714	Shen X. J.,Sun J. Y.,Zhang X. Y.,et al. Characterization of submicron aerosols and effect on visibility during a severe haze-fog episode in Yangtze River Delta, China (SCI)[J]. Atmospheric Environment,2015,120:307-316.
APA	Shen X. J..,Sun J. Y..,Zhang X. Y..,Zhang Y. M..,Zhang L..,...&Zhang Y. W..(2015).Characterization of submicron aerosols and effect on visibility during a severe haze-fog episode in Yangtze River Delta, China (SCI).Atmospheric Environment,120,307-316.
MLA	Shen X. J.,et al."Characterization of submicron aerosols and effect on visibility during a severe haze-fog episode in Yangtze River Delta, China (SCI)".Atmospheric Environment 120(2015):307-316.