气候变化领域集成服务门户(CCPortal): A 3D study on the amplification of regional haze and particle growth by local emissions

CCPortal

DOI	10.1038/s41612-020-00156-5
	A 3D study on the amplification of regional haze and particle growth by local emissions
	Du W.; Dada L.; Zhao J.; Chen X.; Daellenbach K.R.; Xie C.; Wang W.; He Y.; Cai J.; Yao L.; Zhang Y.; Wang Q.; Xu W.; Wang Y.; Tang G.; Cheng X.; Kokkonen T.V.; Zhou W.; Yan C.; Chu B.; Zha Q.; Hakala S.; Kurppa M.; Järvi L.; Liu Y.; Li Z.; Ge M.; Fu P.; Nie W.; Bianchi F.; Petäjä T.; Paasonen P.; Wang Z.; Worsnop D.R.; Kerminen V.-M.; Kulmala M.; Sun Y.
发表日期	2021
ISSN	23973722
卷号	4 期号:1
英文摘要	The role of new particle formation (NPF) events and their contribution to haze formation through subsequent growth in polluted megacities is still controversial. To improve the understanding of the sources, meteorological conditions, and chemistry behind air pollution, we performed simultaneous measurements of aerosol composition and particle number size distributions at ground level and at 260 m in central Beijing, China, during a total of 4 months in 2015–2017. Our measurements show a pronounced decoupling of gas-to-particle conversion between the two heights, leading to different haze processes in terms of particle size distributions and chemical compositions. The development of haze was initiated by the growth of freshly formed particles at both heights, whereas the more severe haze at ground level was connected directly to local primary particles and gaseous precursors leading to higher particle growth rates. The particle growth creates a feedback loop, in which a further development of haze increases the atmospheric stability, which in turn strengthens the persisting apparent decoupling between the two heights and increases the severity of haze at ground level. Moreover, we complemented our field observations with model analyses, which suggest that the growth of NPF-originated particles accounted up to ∼60% of the accumulation mode particles in the Beijing–Tianjin–Hebei area during haze conditions. The results suggest that a reduction in anthropogenic gaseous precursors, suppressing particle growth, is a critical step for alleviating haze although the number concentration of freshly formed particles (3–40 nm) via NPF does not reduce after emission controls. © 2021, The Author(s).
语种	英语
scopus关键词	amplification; atmospheric chemistry; atmospheric pollution; concentration (composition); haze; source apportionment; three-dimensional modeling; Beijing [Beijing (ADS)]; Beijing [China]; China
来源期刊	npj Climate and Atmospheric Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178009
作者单位	State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, P.O. Box 64, Helsinki, 00014, Finland; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China; State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing, 210044, China; Helsinki Institute of Sustainability Science, University of Helsinki, Yliopistokatu 3, Helsinki, 00014, Finland; Aerosol and Haze Laboratory, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China; College of Global Change and Earth System ...
推荐引用方式 GB/T 7714	Du W.,Dada L.,Zhao J.,et al. A 3D study on the amplification of regional haze and particle growth by local emissions[J],2021,4(1).
APA	Du W..,Dada L..,Zhao J..,Chen X..,Daellenbach K.R..,...&Sun Y..(2021).A 3D study on the amplification of regional haze and particle growth by local emissions.npj Climate and Atmospheric Science,4(1).
MLA	Du W.,et al."A 3D study on the amplification of regional haze and particle growth by local emissions".npj Climate and Atmospheric Science 4.1(2021).