DOI: 10.1016/j.atmosenv.2014.01.048
Scopus记录号: 2-s2.0-84896861930
论文题名: 3-year chemical composition of free tropospheric PM1 at the Mt. Cimone GAW global station - South Europe - 2165m a.s.l.
作者: Carbone C ; , Decesari S ; , Paglione M ; , Giulianelli L ; , Rinaldi M ; , Marinoni A ; , Cristofanelli P ; , Didiodato A ; , Bonasoni P ; , Fuzzi S ; , Facchini M ; C
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 87 起始页码: 218
结束页码: 227
语种: 英语
英文关键词: Chemical composition
; Free troposphere
; Mediterranean basin
; PM1 aerosol
; Po Valley
; Residual layers
Scopus关键词: Chemical compositions
; Free troposphere
; Mediterranean basin
; PO Valley
; Residual layers
; Aerosols
; Chemical analysis
; Inorganic chemicals
; River pollution
; Troposphere
; Atmospheric movements
; ammonia
; organic matter
; aerosol
; ammonium
; anticyclone
; atmospheric pollution
; chemical composition
; particulate matter
; river pollution
; troposphere
; acidity
; aerosol
; article
; chemical composition
; Eastern Europe
; Italy
; priority journal
; river basin
; Southern Europe
; summer
; trend study
; troposphere
; Western Europe
; winter
; Apennines
; Emilia-Romagna
; Italy
; Modena
; Mount Cimone
; Po Basin
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: Nocturnal organic and inorganic chemical characterization of fine (PM1) aerosol was carried out at the GAW global high mountain station of Mt. Cimone (CMN), from January 2009 to December 2011, in the framework of the EU-EUSAAR and ACTRIS programs. The station is located at the summit of the Northern Italian Apennines (2165m a.s.l.) overlooking the polluted Po river basin and is considered representative of background conditions for Southern Europe/Northern Mediterranean.The concentrations of carbonaceous and ionic aerosol follow a typical seasonal trend, with maxima during summer and minima during winter. The average PM1 mass apportioned by the chemical analyses ranged between 1.2±0.68μgm-3 (winter) and 5.0±2.7μgm-3 (summer), with ca. 80% and 60%, respectively, accounted for by organic matter, mainly water-soluble (yearly average WSOC/TC ratio 0.67±0.18), the remainder taking the form of ammonium salts. The fine fraction turned out to be mostly neutralized by ammonia, with a slight tendency to acidity during colder months.This seasonal cycle can be explained by the interplay between the local/mesoscale (vertical) and large-scale (advective) circulations. From mid-spring to late summer, stable anticyclonic conditions and increased turbulent mixing in the lower troposphere, associated to the thermal mountain wind system, induce convective/thermal uplift of air masses from the Po Valley to CMN, strongly altering the free tropospheric aerosol features. Conversely, higher vertical stability at the low levels and variable transport patterns related to the passage of synoptic disturbances over Northern Italy, determine a weaker influence of vertical transport of pollution on aerosol composition, during midfall-winter.At CMN, the synoptic-scale circulation regimes presented four principal contributions: Mediterranean, Western Europe, continental Europe and Eastern Europe. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80746
Appears in Collections: 气候变化事实与影响
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作者单位: Proambiente S.c.r.l., CNR Research Area, Bologna, Italy; Institute for Atmospheric Sciences and Climate (ISAC), National Research Council (CNR), Bologna, Italy; Italian Air Force Mountain Center, Sestola, Modena, Italy
Recommended Citation:
Carbone C,, Decesari S,, Paglione M,et al. 3-year chemical composition of free tropospheric PM1 at the Mt. Cimone GAW global station - South Europe - 2165m a.s.l.[J]. Atmospheric Environment,2014-01-01,87