3-year chemical composition of free tropospheric PM1 at the Mt. Cimone GAW global station - South Europe - 2165 m a.s.l. (Articolo in rivista)

Type
Label
  • 3-year chemical composition of free tropospheric PM1 at the Mt. Cimone GAW global station - South Europe - 2165 m a.s.l. (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.atmosenv.2014.01.048 (literal)
Alternative label
  • Claudio Carbone a, b, Stefano Decesari b, Marco Paglione b, Lara Giulianelli b, Matteo Rinaldi b, Angela Marinoni b, Paolo Cristofanelli b, Attilio Didiodato c, Paolo Bonasoni b, Sandro Fuzzi b, Maria Cristina Facchini b (2014)
    3-year chemical composition of free tropospheric PM1 at the Mt. Cimone GAW global station - South Europe - 2165 m a.s.l.
    in Atmospheric environment (1994)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Claudio Carbone a, b, Stefano Decesari b, Marco Paglione b, Lara Giulianelli b, Matteo Rinaldi b, Angela Marinoni b, Paolo Cristofanelli b, Attilio Didiodato c, Paolo Bonasoni b, Sandro Fuzzi b, Maria Cristina Facchini b (literal)
Pagina inizio
  • 218 (literal)
Pagina fine
  • 227 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 87 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • a Proambiente S.c.r.l., CNR Research Area, Bologna, Italy b Institute for Atmospheric Sciences and Climate (ISAC), National Research Council (CNR), Bologna, Italy c Italian Air Force Mountain Center, Sestola, Modena, Italy (literal)
Titolo
  • 3-year chemical composition of free tropospheric PM1 at the Mt. Cimone GAW global station - South Europe - 2165 m a.s.l. (literal)
Abstract
  • 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 (2165 m 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 ± 0.68 ?g m-3 (winter) and 5.0 ± 2.7 ?g m-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. (literal)
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