气候变化领域集成服务门户(CCPortal): Measurement report: Vertical distribution of biogenic and anthropogenic secondary organic aerosols in the urban boundary layer over Beijing during late summer

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DOI	10.5194/acp-21-12949-2021
	Measurement report: Vertical distribution of biogenic and anthropogenic secondary organic aerosols in the urban boundary layer over Beijing during late summer
	Ren H.; Hu W.; Wei L.; Yue S.; Zhao J.; Li L.; Wu L.; Zhao W.; Ren L.; Kang M.; Xie Q.; Su S.; Pan X.; Wang Z.; Sun Y.; Kawamura K.; Fu P.
发表日期	2021
ISSN	1680-7316
起始页码	12949
结束页码	12963
卷号	21 期号:17
英文摘要	Secondary organic aerosol (SOA) plays a significant role in atmospheric chemistry. However, little is known about the vertical profiles of SOA in the urban boundary layer (UBL). This knowledge gap constrains the SOA simulation in chemical transport models. Here, the aerosol samples were synchronously collected at 8, 120, and 260ĝ€¯m based on a 325ĝ€¯m meteorological tower in Beijing from 15 August to 10 September 2015. Strict emission controls were implemented during this period for the 2015 China Victory Day parade. Here, we observed that the total concentration of biogenic SOA tracers increased with height. The fraction of SOA from isoprene oxidation increased with height, whereas the fractions of SOA from monoterpenes and sesquiterpenes decreased, and 2,3-dihydroxy-4-oxopentanoic acid (DHOPA), a tracer of anthropogenic SOA from toluene oxidation, also increased with height. The complicated vertical profiles of SOA tracers highlighted the need to characterize SOA within the UBL. The mass concentration of estimated secondary organic carbon (SOC) ranged from 341 to 673ĝ€¯ngCm-3. The increase in the estimated SOC fractions from isoprene and toluene with height was found to be more related to regional transport, whereas the decrease in the estimated SOC from monoterpenes and sesquiterpene with height was more subject to local emissions. Emission controls during the parade reduced SOC by 4ĝ€¯%-35ĝ€¯%, with toluene SOC decreasing more than the other SOC. This study demonstrates that vertical distributions of SOA within the UBL are complex, and the vertical profiles of SOA concentrations and sources should be considered in field and modeling studies in the future. © Authors 2021.
语种	英语
scopus关键词	aerosol; aerosol composition; anthropogenic source; biogenic deposit; boundary layer; concentration (composition); emission control; organic carbon; summer; urban atmosphere; vertical distribution; vertical profile; Beijing [Beijing (ADS)]; Beijing [China]; China
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/246619
作者单位	Institute of Surface-Earth System Science, School of Earth-System Science, Tianjin University, Tianjin, 300072, China; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Chubu Institute for Advanced Studies, Chubu University, Kasugai, 487-8501, Japan; Minerva Research Group, Max Planck Institute for Chemistry, Mainz, 55128, Germany; Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, 412 96, Sweden
推荐引用方式 GB/T 7714	Ren H.,Hu W.,Wei L.,et al. Measurement report: Vertical distribution of biogenic and anthropogenic secondary organic aerosols in the urban boundary layer over Beijing during late summer[J],2021,21(17).
APA	Ren H..,Hu W..,Wei L..,Yue S..,Zhao J..,...&Fu P..(2021).Measurement report: Vertical distribution of biogenic and anthropogenic secondary organic aerosols in the urban boundary layer over Beijing during late summer.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(17).
MLA	Ren H.,et al."Measurement report: Vertical distribution of biogenic and anthropogenic secondary organic aerosols in the urban boundary layer over Beijing during late summer".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.17(2021).