气候变化领域集成服务门户(CCPortal): Influence of the dry aerosol particle size distribution and morphology on the cloud condensation nuclei activation. An experimental and theoretical investigation

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DOI	10.5194/acp-20-4209-2020
	Influence of the dry aerosol particle size distribution and morphology on the cloud condensation nuclei activation. An experimental and theoretical investigation
	Wu J.; Faccinetto A.; Grimonprez S.; Batut S.; Yon J.; Desgroux P.; Petitprez D.
发表日期	2020
ISSN	1680-7316
起始页码	4209
结束页码	4225
卷号	20 期号:7
英文摘要	Combustion and other high-temperature processes frequently result in the emission of aerosols in the form of polydisperse fractal-like aggregates made of condensed-phase nanoparticles (soot for instance). If certain conditions are met, the emitted aerosol particles are known to evolve into important cloud condensation nuclei (CCN) in the atmosphere. In this work, the hygroscopic parameter κ of complex morphology aggregates is calculated from the supersaturation-dependent activated fraction Fa=Fa(SS) in the frame of κ-Köhler theory. The particle size distribution is approximated with the morphology-corrected volume equivalent diameter calculated from the electrical mobility diameter by taking into account the diameter of the primary particle and the fractal dimension of the aggregate experimentally obtained from transmission electron microscopy measurements. Activation experiments are performed in water supersaturation conditions using a commercial CCN-100 condensation nuclei counter. The model is tested in close-to-ideal conditions of size-selected, isolated spherical particles (ammonium sulfate nanoparticles dispersed in nitrogen), then with complex polydisperse fractal-like aggregates (soot particles activated by exposure to ozone with κ as low as low as 5 × 10-5) that represent realistic anthropogenic emissions in the atmosphere. © 2020 Author(s).
语种	英语
scopus关键词	aerosol; aggregate; cloud condensation nucleus; experimental study; particle size; size distribution; supersaturation; theoretical study; transmission electron microscopy
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/141423
作者单位	Lille Univ., CNRS PC2A, Lille, 59000, France; Normandie Univ., UNIROUEN, INSA Rouen, CNRS CORIA, Rouen, 76000, France
推荐引用方式 GB/T 7714	Wu J.,Faccinetto A.,Grimonprez S.,et al. Influence of the dry aerosol particle size distribution and morphology on the cloud condensation nuclei activation. An experimental and theoretical investigation[J],2020,20(7).
APA	Wu J..,Faccinetto A..,Grimonprez S..,Batut S..,Yon J..,...&Petitprez D..(2020).Influence of the dry aerosol particle size distribution and morphology on the cloud condensation nuclei activation. An experimental and theoretical investigation.Atmospheric Chemistry and Physics,20(7).
MLA	Wu J.,et al."Influence of the dry aerosol particle size distribution and morphology on the cloud condensation nuclei activation. An experimental and theoretical investigation".Atmospheric Chemistry and Physics 20.7(2020).