globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2017JD026844
论文题名:
Causes and importance of new particle formation in the present-day and preindustrial atmospheres
作者: Gordon H.; Kirkby J.; Baltensperger U.; Bianchi F.; Breitenlechner M.; Curtius J.; Dias A.; Dommen J.; Donahue N.M.; Dunne E.M.; Duplissy J.; Ehrhart S.; Flagan R.C.; Frege C.; Fuchs C.; Hansel A.; Hoyle C.R.; Kulmala M.; Kürten A.; Lehtipalo K.; Makhmutov V.; Molteni U.; Rissanen M.P.; Stozkhov Y.; Tröstl J.; Tsagkogeorgas G.; Wagner R.; Williamson C.; Wimmer D.; Winkler P.M.; Yan C.; Carslaw K.S.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2017
卷: 122, 期:16
起始页码: 8739
结束页码: 8760
语种: 英语
英文关键词: aerosol ; atmosphere ; nucleation
英文摘要: New particle formation has been estimated to produce around half of cloud-forming particles in the present-day atmosphere, via gas-to-particle conversion. Here we assess the importance of new particle formation (NPF) for both the present-day and the preindustrial atmospheres. We use a global aerosol model with parametrizations of NPF from previously published CLOUD chamber experiments involving sulfuric acid, ammonia, organic molecules, and ions. We find that NPF produces around 67% of cloud condensation nuclei at 0.2% supersaturation (CCN0.2%) at the level of low clouds in the preindustrial atmosphere (estimated uncertainty range 45–84%) and 54% in the present day (estimated uncertainty range 38–66%). Concerning causes, we find that the importance of biogenic volatile organic compounds (BVOCs) in NPF and CCN formation is greater than previously thought. Removing BVOCs and hence all secondary organic aerosol from our model reduces low-cloud-level CCN concentrations at 0.2% supersaturation by 26% in the present-day atmosphere and 41% in the preindustrial. Around three quarters of this reduction is due to the tiny fraction of the oxidation products of BVOCs that have sufficiently low volatility to be involved in NPF and early growth. Furthermore, we estimate that 40% of preindustrial CCN0.2% are formed via ion-induced NPF, compared with 27% in the present day, although we caution that the ion-induced fraction of NPF involving BVOCs is poorly measured at present. Our model suggests that the effect of changes in cosmic ray intensity on CCN is small and unlikely to be comparable to the effect of large variations in natural primary aerosol emissions. ©2017. The Authors.
资助项目: 200020_135307 ; 206620_141278
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62586
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: School of Earth and Environment, University of Leeds, Leeds, United Kingdom; CERN, Geneva, Switzerland; Institute for Atmosphere and Environment, Goethe University Frankfurt, Frankfurt, Germany; Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, Villigen, Switzerland; Department of Physics, Division of Atmospheric Sciences, University of Helsinki, Helsinki, Finland; School of Engineering and Applied Sciences, Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, United States; Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, PA, United States; Finnish Meteorological Institute, Atmospheric Research Centre of Eastern Finland, Kuopio, Finland; Helsinki Institute of Physics, Helsinki, Finland; Now at Atmospheric Chemistry Department, Max Planck Institute for Chemistry, Mainz, Germany; Institute for Ion Physics and Applied Physics, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, United States; University of Innsbruck, Innsbruck, Austria; SLFWSL Institute for Snow and Avalanche Research, Davos, Switzerland; Solar and Cosmic Ray Research Laboratory, Lebedev Physical Institute, Moscow, Russian Federation; Leibniz Institute for Tropospheric Research, Leipzig, Germany; Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder and National Oceanic and Atmospheric Administration Earth System Research Laboratory, Boulder, CO, United States; Faculty of Physics, University of Vienna, Vienna, Austria

Recommended Citation:
Gordon H.,Kirkby J.,Baltensperger U.,et al. Causes and importance of new particle formation in the present-day and preindustrial atmospheres[J]. Journal of Geophysical Research: Atmospheres,2017-01-01,122(16)
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