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Istituto sull'inquinamento atmosferico

Torna all'elenco Contributi in rivista anno 2010

Contributo in rivista

Tipo: Articolo in rivista

Titolo: Size-resolved aerosol chemical composition over the Italian Peninsula during typical summer and winter conditions

Anno di pubblicazione: 2010

Formato: Elettronico Cartaceo

Autori: Carbone, C.; Decesari, S; Mircea, M.; Giulianelli, L.; Finessi, E.; Rinaldi, M.; Fuzzi, S.; Marinoni, A.; Duchi, R.; Perrino, C.; Sargolini T.; Vardè, M.; Sprovieri, F.; Gobbi, G. P.; Angelini, F.; Facchini, M. C

Affiliazioni autori: - Istituto di Scienze dell'Atmosfera e del Clima - CNR, Bologna, Italy - Dipartimento Ambiente, Cambiamenti Globali e Sviluppo Sostenibile - ENEA, Bologna, Italy - Istituto sull'Inquinamento Atmosferico - CNR, Rome, Italy - Università di Roma Sapienza, Dipartimento di Scienze di Sanità Pubblica, Rome, Italy - Istituto sull'Inquinamento Atmosferico - CNR, Rende (Cosenza), Italy - Istituto di Scienze dell'Atmosfera e del Clima - CNR, Rome, Italy

Autori CNR:

  • FEDERICO ANGELINI
  • STEFANO DECESARI
  • MARIA CRISTINA FACCHINI
  • SANDRO FUZZI
  • GIAN PAOLO GOBBI
  • ANGELA MARINONI
  • CINZIA PERRINO
  • MATTEO RINALDI
  • TIZIANA SARGOLINI
  • FRANCESCA SPROVIERI
  • MASSIMILIANO VARDE'

Lingua: inglese

Abstract: In the frame of the MIUR-AEROCLOUDS project (Study of Direct and Indirect Aerosol Effects on Climate), night-time and daytime size-segregated aerosol samples were collected concurrently at five different sites (near-city, urban, rural, marine and mountain background sites). The paper reports on the daily evolution of the main aerosol chemical characteristics as a function of particle size in different environments over the Italian Peninsula, spanning from the Po Valley to the south Tyrrhenian coast. Two 4-day intensive observation periods (IOPs) were undertaken in July 2007 and February 2008, under meteorological conditions typical of the summer and winter climate for Italy. In the summer IOP, under stable atmospheric conditions, at the low-altitude continental sites the diurnal evolution of the planetary boundary layer (PBL), induces an atmospheric dilution effect driving the particulate matter (PM) concentrations, while, at the mountain site, it determines the upward motion of polluted air masses from the Po Valley PBL in daytime.The fine fraction was dominated by ammonium salts and carbonaceous matter (water-soluble organic matter, WSOM, and water-insoluble carbonaceous matter, WINCM). High concentrations of ammonium sulphate and WSOM due to enhanced photochemical activity constituted the background aerosol composition over the whole country, whereas, ammonium nitrate and WINCM were more associated to local emissions (e.g. urban site with concentrations peaking in the finest size range due to strong local traffic-related sources of ultrafine particles).During the winter IOP in the Po Valley, the shallow PBL depths and low wind velocity, especially at night, favoured the condensation of semi-volatile species (i.e. organic matter and ammonium nitrate), causing the high fine PM concentration observed at ground level.

Lingua abstract: inglese

Rivista:

Atmospheric environment Pergamon.
Paese di pubblicazione: Regno Unito
Lingua: inglese
ISSN: 1352-2310

DOI: 10.1016/j.atmosenv.2010.08.008

Referee: Sì: Internazionale

Indicizzato da:

  • ISI Web of Science (WOS) [WOS:000284661600025]
  • Scopus [2-s2.0-78049278345]

Parole chiave:

  • Aerosol
  • Chemical composition
  • Italy
  • Po valley
  • Size-segregated

Strutture CNR:

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