气候变化领域集成服务门户(CCPortal): A study on the characteristics of ice nucleating particles concentration and aerosols and their relationship in spring in Beijing

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DOI	10.1016/j.atmosres.2020.105196
	A study on the characteristics of ice nucleating particles concentration and aerosols and their relationship in spring in Beijing
	Che Y.; Zhang J.; Zhao C.; Fang W.; Xue W.; Yang W.; Ji D.; Dang J.; Duan J.; Sun J.; Shen X.; Zhou X.
发表日期	2021
ISSN	0169-8095
卷号	247
英文摘要	In this study, Bigg cloud chamber was used to determine the concentrations of ice nucleating particles (INPs) in the temperature range from −15 to −30 °C in Beijing in the spring of 2017. The concentrations were compared with historical results observed by a similar instrument in Beijing, showing that the INP concentration in 2017 was generally lower than those obtained in 1995 and 1996. Based on air mass trajectory clustering analysis, the high INP concentration in 1995 and 1996 might be attributable mainly to the transport of sand-dust from the northwestern region. Furthermore, the aerosol number size distribution and chemical composition in PM2.5 were measured simultaneously. The number of aerosols was dominated by particles in Aitken mode and accumulation mode particles during the observation period, but coarse mode particles obviously exhibited stronger correlation with INPs. NO3−, NH4+, and SO42− were the major ions and existed mainly in the form of NH4NO3 and (NH4)2SO4 in PM2.5. Ratio analysis indicated that air pollution originated mainly from mobile sources in Beijing and had serious secondary pollution process. The high ratio of organic carbon (OC) to elemental carbon (EC) implies existing severe secondary organic carbon pollution. In addition, we investigated the relationship between INPs and aerosols with different sizes and compositions in spring in Beijing, the results indicated that for aerosols with a diameter above 0.5 μm, the correlation between INPs and aerosols increased clearly with increasing particle size, but for aerosols with sizes below 0.5 μm, the correlation coefficient displayed a clear trend of increasing first and then decreasing with increasing aerosol size. An INP parameterization depending on aerosol particles and the activation temperature was also established. A comparison of the correlations between the INPs and compositions in PM2.5 shows that NaCl, NH4NO3 and (NH4)2SO4 were more correlated with INPs than other ionic compounds, but a strong correlation existed only at −30 °C, there was no correlation at −20 °C and above. Additionally, OC was more relevant to INP than EC, but the correlation was observed only at low temperature region. © 2020 Elsevier B.V.
英文关键词	Aerosol number size distribution; Chemical compositions; Cloud chamber; Ice nucleating particles
语种	英语
scopus关键词	Aerosols; Air pollution; Atmospheric movements; Nitrogen compounds; Organic carbon; Particle size; Sodium chloride; Springs (components); Temperature; Activation temperatures; Aerosol number size distribution; Air mass trajectories; Coarse mode particles; Correlation coefficient; Low temperature regions; Particles concentration; Secondary organic carbon; Particle size analysis; aerosol composition; aerosol formation; chemical composition; concentration (composition); parameterization; particle settling; particulate matter; size distribution; Beijing [China]; China
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/141754
作者单位	College of Global Change and Earth System Science, Beijing Normal University, Beijing, 100875, China; State Key Laboratory of Severe Weather & Key Laboratory for Cloud Physics, Chinese Academy of Meteorological Sciences, Beijing, 100081, China; Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Key Laboratory of Atmospheric Chemistry of CMA, Chinese Academy of Meteorological Sciences, Beijing, 100081, China
推荐引用方式 GB/T 7714	Che Y.,Zhang J.,Zhao C.,et al. A study on the characteristics of ice nucleating particles concentration and aerosols and their relationship in spring in Beijing[J],2021,247.
APA	Che Y..,Zhang J..,Zhao C..,Fang W..,Xue W..,...&Zhou X..(2021).A study on the characteristics of ice nucleating particles concentration and aerosols and their relationship in spring in Beijing.Atmospheric Research,247.
MLA	Che Y.,et al."A study on the characteristics of ice nucleating particles concentration and aerosols and their relationship in spring in Beijing".Atmospheric Research 247(2021).