气候变化领域集成服务门户(CCPortal): Measurement report: Size distributions of urban aerosols down to 1 nm from long-term measurements

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DOI	10.5194/acp-22-13569-2022
	Measurement report: Size distributions of urban aerosols down to 1 nm from long-term measurements
	Deng, Chenjuan; Li, Yiran; Yan, Chao; Wu, Jin; Cai, Runlong; Wang, Dongbin; Liu, Yongchun; Kangasluoma, Juha; Kerminen, Veli-Matti; Kulmala, Markku; Jiang, Jingkun
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	13569
结束页码	13580
卷号	22 期号:20 页码:12
英文摘要	The size distributions of urban atmospheric aerosols convey important information on their origins and impacts. Their long-term characteristics, especially for sub-3 nm particles, are still limited. In this study, we examined the characteristics of atmospheric aerosol size distributions down to similar to 1 nm based on 4-year measurements in urban Beijing. Using cluster analysis, three typical types of number size distributions were identified, i.e., daytime new particle formation (NPF) type, daytime non-NPF type, and nighttime type. Combining a power law distribution and multiple lognormal distributions can well represent the sharp concentration decrease of sub3 nm particles with increasing size and the modal characteristics for those above 3 nm in the submicron size range. The daytime NPF type exhibits high concentrations of sub-3 nm aerosols together with other three modes. However, both the daytime non-NPF type and the nighttime type have a low abundance of sub-3 nm aerosol particles together with only two distinct modes. In urban Beijing, the concentration of H2SO4 monomer during the daytime with NPF is similar to that during the daytime without NPF, while significantly higher than that during the nighttime. The concentration of atmospheric sub-3 nm particles on NPF days has a strong seasonality while their seasonality on non-NPF days is less pronounced. In addition to NPF as the most important source, we show that vehicles can emit sub-3 nm particles as well, although their influence on the measured aerosol population strongly depends on the distance from the road.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000869791100001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273632
作者单位	Tsinghua University; University of Helsinki; Beijing University of Chemical Technology; Nanjing University
推荐引用方式 GB/T 7714	Deng, Chenjuan,Li, Yiran,Yan, Chao,et al. Measurement report: Size distributions of urban aerosols down to 1 nm from long-term measurements[J],2022,22(20):12.
APA	Deng, Chenjuan.,Li, Yiran.,Yan, Chao.,Wu, Jin.,Cai, Runlong.,...&Jiang, Jingkun.(2022).Measurement report: Size distributions of urban aerosols down to 1 nm from long-term measurements.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(20),12.
MLA	Deng, Chenjuan,et al."Measurement report: Size distributions of urban aerosols down to 1 nm from long-term measurements".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.20(2022):12.