DOI: 10.1016/j.atmosenv.2018.03.060
Scopus记录号: 2-s2.0-85044987366
论文题名: Characterization of distinct Arctic aerosol accumulation modes and their sources
作者: Lange R ; , Dall'Osto M ; , Skov H ; , Nøjgaard J ; K ; , Nielsen I ; E ; , Beddows D ; C ; S ; , Simo R ; , Harrison R ; M ; , Massling A
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 183 起始页码: 1
结束页码: 10
语种: 英语
英文关键词: Accumulation mode
; Arctic aerosol
; Biogenic aerosol
; CCN
; Cluster analysis
Scopus关键词: Chemical analysis
; Cluster analysis
; Condensation
; Condensation reactions
; Ecosystems
; Particle size
; Particle size analysis
; Size distribution
; Sulfur compounds
; Accumulation modes
; Aerosol number size distribution
; Arctic aerosols
; Biogenic aerosols
; Cloud condensation nuclei
; K-means clustering analysis
; Meteorological parameters
; Particle number size distribution
; Aerosols
; black carbon
; organic compound
; sulfate
; aerosol
; aerosol composition
; arctic environment
; cloud condensation nucleus
; cluster analysis
; measurement method
; particle size
; pollutant source
; size distribution
; aerosol
; air sampling
; Arctic
; Article
; bioaccumulation
; chemical composition
; cloud
; cluster analysis
; concentration (parameters)
; Greenland
; marine environment
; meteorology
; particle size
; polymerization
; priority journal
; Arctic
; Greenland
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: In this work we use cluster analysis of long term particle size distribution data to expand an array of different shorter term atmospheric measurements, thereby gaining insights into longer term patterns and properties of Arctic aerosol. Measurements of aerosol number size distributions (9–915 nm) were conducted at Villum Research Station (VRS), Station Nord in North Greenland during a 5 year record (2012–2016). Alongside this, measurements of aerosol composition, meteorological parameters, gaseous compounds and cloud condensation nuclei (CCN) activity were performed during different shorter occasions. K-means clustering analysis of particle number size distributions on daily basis identified several clusters. Clusters of accumulation mode aerosols (main size modes > 100 nm) accounted for 56% of the total aerosol during the sampling period (89–91% during February–April, 1–3% during June–August). By association to chemical composition, cloud condensation nuclei properties, and meteorological variables, three typical accumulation mode aerosol clusters were identified: Haze (32% of the time), Bimodal (14%) and Aged (6%). In brief: (1) Haze accumulation mode aerosol shows a single mode at 150 nm, peaking in February–April, with highest loadings of sulfate and black carbon concentrations. (2) Accumulation mode Bimodal aerosol shows two modes, at 38 nm and 150 nm, peaking in June–August, with the highest ratio of organics to sulfate concentrations. (3) Aged accumulation mode aerosol shows a single mode at 213 nm, peaking in September–October and is associated with cloudy and humid weather conditions during autumn. The three aerosol clusters were considered alongside CCN concentrations. We suggest that organic compounds, that are likely marine biogenic in nature, greatly influence the Bimodal cluster and contribute significantly to its CCN activity. This stresses the importance of better characterizing the marine ecosystem and the aerosol-mediated climate effects in the Arctic. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82882
Appears in Collections: 气候变化事实与影响
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作者单位: Arctic Research Center, iClimate, Department of Environmental Science, Aarhus University, Frederiksborgvej 399, Roskilde, Denmark; Institute of Marine Sciences, ICM-CSIC, Passeig Marítim de la Barceloneta, 37-49, Barcelona, Spain; National Centre for Atmospheric Science, University of Birmingham, Edgbaston, Birmingham, United Kingdom; Department of Environmental Sciences, Center of Excellence in Environmental Studies, King Abdulaziz University, PO Box 80203, Jeddah, Saudi Arabia
Recommended Citation:
Lange R,, Dall'Osto M,, Skov H,et al. Characterization of distinct Arctic aerosol accumulation modes and their sources[J]. Atmospheric Environment,2018-01-01,183