DOI: 10.1016/j.atmosenv.2016.10.032
Scopus记录号: 2-s2.0-84994045392
论文题名: The impact of Mount Etna sulfur emissions on the atmospheric composition and aerosol properties in the central Mediterranean: A statistical analysis over the period 2000–2013 based on observations and Lagrangian modelling
作者: Sellitto P ; , Zanetel C ; , di Sarra A ; , Salerno G ; , Tapparo A ; , Meloni D ; , Pace G ; , Caltabiano T ; , Briole P ; , Legras B
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 148 起始页码: 77
结束页码: 88
语种: 英语
英文关键词: Mediterranean
; Mount Etna
; Regional climate
; Secondary sulfate aerosols
; Sulfur cycle
; Volcanic emissions
Scopus关键词: Atmospheric aerosols
; Atmospheric composition
; Atmospheric movements
; Explosives
; Lagrange multipliers
; Statistical methods
; Sulfur
; Sulfur dioxide
; Volcanoes
; Mediterranean
; Mount Etna
; Regional climate
; Sulfate aerosols
; Sulfur cycles
; Volcanic emission
; Aerosols
; sulfur dioxide
; aerosol
; aerosol composition
; aerosol property
; air mass
; atmospheric plume
; concentration (composition)
; global climate
; optical property
; particle size
; regional climate
; size distribution
; sulfur
; sulfur cycle
; aerosol
; air pollution
; Article
; atmosphere
; atmospheric transport
; concentration (parameters)
; environmental impact
; environmental radioactivity
; flexible particle dispersion model
; limit of quantitation
; Mediterranean Sea
; particulate matter
; plume dispersion
; pollution transport
; priority journal
; simulation
; statistical analysis
; sulfur cycle
; sulfur dioxide emission
; ultraviolet spectrophotometer
; volcano
; Catania [Sicily]
; Etna
; Italy
; Mediterranean Region
; Sicily
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: The emission of gases and aerosols due to volcanic activity may impact significantly atmospheric composition, cloud occurrence and properties, and the regional and global climate. While the effects of strong explosive (stratospheric) eruptions are relatively well known, limited information on the impacts of small to moderate volcanic activities, including passive degassing, is available. In this paper, the downwind impact of Mount Etna's sulfur emissions on the central Mediterranean is investigated on a statistical basis over the period 2000–2013 using: (a) daily sulfur dioxide emission rates measured near crater at Mount Etna with ground-based ultraviolet spectrophotometers, (b) Lagrangian trajectories and simulated plume dispersion obtained with the FLEXPART (FLEXible PARTicle dispersion) model, and (c) long-term observations of column SO2 concentration and aerosol Ångström exponent α at Lampedusa (35.5° N, 12.6° E). This statistical analysis has allowed, for the first time, the characterization of decadal impact of Mount Etna's sulfur emissions on the sulfur dioxide and the aerosol microphysical/optical properties in the central Mediterranean. On average, statistically significant higher SO2 concentrations and smaller aerosol sizes are present when air masses from Mount Etna overpass Lampedusa. Despite being upwind of Lampedusa for only 5% of the time, Mount Etna is potentially responsible for up to 40% and 20% of the SO2 and α extreme values (exceedances of a fixed threshold), respectively, at this location. The most important factor determining this perturbation is the prevailing dynamics, while the magnitude of the SO2 emission rates from Mount Etna appears to be likely important only for relatively strong emissions. The observed perturbations to the aerosol size distribution are expected to produce a direct regional radiative effect in this area. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82298
Appears in Collections: 气候变化事实与影响
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作者单位: Laboratoire de Météorologie Dynamique, UMR8539, CNRS - École Normale Supérieure/Université Pierre et Marie Curie/École polytechnique, Paris, France; Dipartimento di Scienze Chimiche, Università di Padova, Padova, Italy; ENEA, Laboratory for Observations and Analyses of Earth and Climate (SSPT-PROTER-OAC), Rome, Italy; Istituto Nazionale di Geofisica e Vulcanologia, Catania, Italy; Laboratoire de Géologie, UMR8538, CNRS - École Normale Supérieure, Paris, France
Recommended Citation:
Sellitto P,, Zanetel C,, di Sarra A,et al. The impact of Mount Etna sulfur emissions on the atmospheric composition and aerosol properties in the central Mediterranean: A statistical analysis over the period 2000–2013 based on observations and Lagrangian modelling[J]. Atmospheric Environment,2017-01-01,148