DOI: 10.1016/j.atmosenv.2020.117513
论文题名: Advection pathways at the Mt. Cimone WMO-GAW station: Seasonality, trends, and influence on atmospheric composition
作者: Brattich E. ; Orza J.A.G. ; Cristofanelli P. ; Bonasoni P. ; Marinoni A. ; Tositti L.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 234 语种: 英语
英文关键词: Advection
; Atmospheric movements
; Climatology
; Cluster analysis
; Anthropogenic emissions
; Atmospheric circulation
; Atmospheric transport
; Back trajectories
; Low-frequency atmospheric
; Meteorological factors
; Teleconnection indices
; Western Mediterranean
; Atmospheric composition
; lead 210
; anthropogenic effect
; anthropogenic source
; atmospheric circulation
; atmospheric transport
; cluster analysis
; particulate matter
; radionuclide
; teleconnection
; trend analysis
; advection
; Arctic
; Article
; atmospheric deposition
; atmospheric transport
; cluster analysis
; Europe
; meteorology
; oscillation
; particulate matter
; priority journal
; seasonal variation
; time series analysis
; Apennines
; Arctic
; Emilia-Romagna
; Europe
; Italy
; Modena
; Mount Cimone
学科: Aerosol
; Atmospheric radiotracers
; Back-trajectories
; Teleconnection
; Trends
中文摘要: Relationships are analysed between advection pathways and atmospheric composition at the high-mountain station of Mt. Cimone (Italy), between 1998 and 2011. Back-trajectory cluster analysis identifies eight main advection pathways. A connection is demonstrated between the seasonality of airmass transport and atmospheric composition. Temporal trends and correlation of variables, flow types and teleconnection indices show, among other, decreasing trends of 210Pb (a radionuclide of crustal origin; −0.008 mBq m−3 year−1) as well as PM10 (−0.15 μg m−3 year−1), indicating that previously observed downward PM10 trends in Europe may actually be attributable to a combination of meteorological factors and decreasing anthropogenic emissions. The detection of a positive (negative) correlation of these tracers with Western (Arctic) air masses, showing significant downward (upward) trends at the study site, further confirms our findings. Lastly, relationships between teleconnection indices and atmospheric transport types/atmospheric variables are further analysed, focusing on large-scale atmospheric circulation indices and regional low-frequency atmospheric circulation pathways, the Mediterranean Oscillation and the Western Mediterranean Oscillation. The analysis reveals the important influence of such regional indices on the advection pathways. © 2020 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160276
Appears in Collections: 气候变化与战略
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作者单位: Department of Physics and Astronomy DIFA, Alma Mater Studiorum University of Bologna, Bologna (BO), 40126, Italy; SCOLAb, Fisica Aplicada, Miguel Hernandez University, Elche, 03202, Spain; ISAC-CNR, Via Piero Gobetti, Bologna (BO), Italy; Environmental Chemistry and Radioactivity Laboratory, Department of Chemistry “G. Ciamician”, Alma Mater Studiorum University of Bologna, Bologna (BO), 40126, Italy
Recommended Citation:
Brattich E.,Orza J.A.G.,Cristofanelli P.,et al. Advection pathways at the Mt. Cimone WMO-GAW station: Seasonality, trends, and influence on atmospheric composition[J]. Atmospheric Environment,2020-01-01,234