DOI: 10.1016/j.atmosenv.2017.04.013
Scopus记录号: 2-s2.0-85018768770
论文题名: Aerosol particle shrinkage event phenomenology in a South European suburban area during 2009–2015
作者: Alonso-Blanco E ; , Gómez-Moreno F ; J ; , Núñez L ; , Pujadas M ; , Cusack M ; , Artíñano B
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 160 起始页码: 154
结束页码: 164
语种: 英语
英文关键词: Aerosol dynamics
; Aerosol particle shrinkage events
; Aerosol particle size
; Aerosol size distribution
; New particle formation
; Scanning mobility particle sizer
Scopus关键词: Aerosols
; Atmospheric aerosols
; Atmospheric humidity
; Particle size
; Photochemical forming
; Size distribution
; Urban growth
; Wind
; Aerosol dynamics
; Aerosol particle sizes
; Aerosol particles
; Aerosol size distributions
; New particle formation
; Scanning mobility particle sizer
; Shrinkage
; volatile organic compound
; aerosol
; ambient air
; concentration (composition)
; equipment
; particle size
; photochemistry
; size distribution
; spatiotemporal analysis
; suburban area
; wind direction
; aerosol
; ambient air
; data base
; humidity
; meteorology
; particle size
; phenomenology
; photochemistry
; priority journal
; rate constant
; Review
; solar radiation
; Southern European
; suburban area
; temperature
; Madrid [Spain]
; Spain
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: A high number of aerosol particle shrinkage cases (70) have been identified and analyzed from an extensive and representative database of aerosol size distributions obtained between 2009 and 2015 at an urban background site in Madrid (Spain). A descriptive classification based on the process from which the shrinkage began is proposed according which shrinkage events were divided into three groups: (1) NPF + shrinkage (NPF + S) events, (2) aerosol particle growth process + shrinkage (G + S) events, and (3) pure shrinkage (S) events. The largest number of shrinkages corresponded to the S-type followed by NPF + S, while the G + S events were the least frequent group recorded. Duration of shrinkages varied widely from 0.75 to 8.5 h and SR from −1.0 to −11.1 nm h−1. These processes typically occurred in the afternoon, around 18:00 UTC, caused by two situations: i) a wind speed increase usually associated with a change in the wind direction (over 60% of the observations) and ii) the reduction of photochemical activity at the end of the day. All shrinkages were detected during the warm period, mainly between May and August, when local meteorological conditions (high solar irradiance and temperature and low relative humidity), atmospheric processes (high photochemical activity) and availability of aerosol-forming precursors were favorable for their development. As a consequence of these processes, the particles concentration corresponding to the Aitken mode decreased into the nucleation mode. The accumulation mode did not undergo significant changes during these processes. In some cases, a dilution of the particulate content in the ambient air was observed. This work, goes further than others works dealing with aerosol particles shrinkages, as it incorporates as a main novelty a classification methodology for studying these processes. Moreover, compared to other studies, it is supported by a high and representative number of observations. Thus, this study contributes to get a better understanding of this type of atmospheric aerosol transformations and its features. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82448
Appears in Collections: 气候变化事实与影响
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作者单位: Center for Energy, Environmental and Technological Research (CIEMAT), Avenida Complutense 40, Madrid, Spain; Institute of Chemical Process Fundamentals of the CAS, v.v.i., Rozvojova 135, Prague, Czech Republic
Recommended Citation:
Alonso-Blanco E,, Gómez-Moreno F,J,et al. Aerosol particle shrinkage event phenomenology in a South European suburban area during 2009–2015[J]. Atmospheric Environment,2017-01-01,160