气候变化领域集成服务门户(CCPortal): Roll vortices induce new particle formation bursts in the planetary boundary layer

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DOI	10.5194/acp-20-11841-2020
	Roll vortices induce new particle formation bursts in the planetary boundary layer
	Lampilahti J.; Manninen H.E.; Leino K.; Väänänen R.; Manninen A.; Mazon S.B.; Nieminen T.; Leskinen M.; Enroth J.; Bister M.; Zilitinkevich S.; Kangasluoma J.; Järvinen H.; Kerminen V.-M.; Petäjä T.; Kulmala M.
发表日期	2020
ISSN	1680-7316
起始页码	11841
结束页码	11854
卷号	20 期号:20
英文摘要	Recent studies have shown the importance of new particle formation (NPF) to global cloud condensation nuclei (CCN) production, as well as to air pollution in megacities. In addition to the necessary presence of low-volatility vapors that can form new aerosol particles, both numerical and observational studies have shown that the dynamics of the planetary boundary layer (BL) plays an important role in NPF. Evidence from field observations suggests that roll vortices might be favorable for inducing NPF in a convective BL. However, direct observations and estimates of the potential importance of this phenomenon to the production of new aerosol particles are lacking. Here we show that rolls frequently induce NPF bursts along the horizontal circulations and that the small clusters and particles originating from these localized bursts grow in size similar to particles typically ascribed to atmospheric NPF that occur almost homogeneously at a regional scale.We outline a method to identify roll-induced NPF from measurements and, based on the collected data, estimate the impact of roll vortices on the overall aerosol particle production due to NPF at a boreal forest site (83%±34% and 26%±8% overall enhancement in particle formation for 3 and 10 nm particles, respectively). We conclude that the formation of roll vortices should be taken into account when estimating particle number budgets in the atmospheric BL. © 2020 Georg Thieme Verlag. All rights reserved.
语种	英语
scopus关键词	aerosol formation; atmospheric circulation; boundary layer; cloud condensation nucleus; vortex; water vapor
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/247467
作者单位	Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, Finland; CERN, Geneva, 1211, Switzerland; Finnish Meteorological Institute, Helsinki, Finland; Department of Radiophysics, University of Nizhny, Novgorod, Russian Federation; Aerosol and Haze Laboratory, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, China; Joint International Research Laboratory of Atmospheric and Earth System Sciences, Nanjing University, Nanjing, China
推荐引用方式 GB/T 7714	Lampilahti J.,Manninen H.E.,Leino K.,et al. Roll vortices induce new particle formation bursts in the planetary boundary layer[J],2020,20(20).
APA	Lampilahti J..,Manninen H.E..,Leino K..,Väänänen R..,Manninen A..,...&Kulmala M..(2020).Roll vortices induce new particle formation bursts in the planetary boundary layer.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(20).
MLA	Lampilahti J.,et al."Roll vortices induce new particle formation bursts in the planetary boundary layer".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.20(2020).