Urban and rural aerosol characterization of summer smog events during the PIPAPO field campaign in Milan, Italy
Vorschaubild nicht verfügbar
Autor:innen
Baltensperger, Urs
Streit, Niklaus
Nyeki, Stephan
Prévôt, André S.H.
Van Dingenen, Rita
Virkkula, Aki
Putaud, Jean-Philippe
Even, A.
ten Brink, Harry
Autor:in (Körperschaft)
Publikationsdatum
2002
Typ der Arbeit
Studiengang
Typ
01A - Beitrag in wissenschaftlicher Zeitschrift
Herausgeber:innen
Herausgeber:in (Körperschaft)
Betreuer:in
Übergeordnetes Werk
Journal of Geophysical Research: Atmospheres
Themenheft
DOI der Originalpublikation
Link
Reihe / Serie
Reihennummer
Jahrgang / Band
107
Ausgabe / Nummer
D22
Seiten / Dauer
LOP 6-1-LOP 6-14
Patentnummer
Verlag / Herausgebende Institution
Wiley
Verlagsort / Veranstaltungsort
Hoboken
Auflage
Version
Programmiersprache
Abtretungsempfänger:in
Praxispartner:in/Auftraggeber:in
Zusammenfassung
A comprehensive range of aerosol parameters was measured at an urban and a rural site in the Milan, Italy metropolitan region during summer smog events in summer 1998. Measurements were performed as part of the Pianura Padana Produzione di Ozono (PIPAPO) field campaign to determine the sensitivity of O3 production to NOₓ and volatile organic carbon concentrations at several ground stations. Primary aerosol parameters (i.e., direct emissions) such as aerosol black carbon showed a distinct diurnal variation with maxima at about 0000 and 0800 central European summer time (CEST), in contrast to secondary aerosol parameters such as sulfate and nitrate. Aerosol number size distributions were measured under ambient conditions as well as after conditioning with volatility and hygroscopicity systems. A mode at d = 20–30 nm in the number concentration was found at 0800 CEST and exhibited high volatility at 110°C (∼80% volume lost upon heating) but no hygroscopic behavior. Based on these measurements, small particles (d < 40 nm) are thought to consist mainly of hydrophobic particulate organic matter, rather than soot or H2SO4 aerosols. Two distinct hygroscopic modes with average growth factors d/d0 ∼ 1.02 and 1.21–1.28 were found for particles with dry (relative humidity of <30%) diameters d0 = 50–200 nm. Submicrometer aerosols exhibited lower volatility at the rural than at the urban site, which is attributed to additional particulate mass produced by secondary particle formation.
Schlagwörter
Fachgebiet (DDC)
550 - Geowissenschaften
624 - Ingenieurbau und Umwelttechnik
624 - Ingenieurbau und Umwelttechnik
Veranstaltung
Startdatum der Ausstellung
Enddatum der Ausstellung
Startdatum der Konferenz
Enddatum der Konferenz
Datum der letzten Prüfung
ISBN
ISSN
2169-897X
2169-8996
2169-8996
Sprache
Englisch
Während FHNW Zugehörigkeit erstellt
Nein
Publikationsstatus
Veröffentlicht
Begutachtung
Peer-Review der ganzen Publikation
Open Access-Status
Closed
Lizenz
Zitation
BALTENSPERGER, Urs, Niklaus STREIT, Ernest WEINGARTNER, Stephan NYEKI, André S.H. PRÉVÔT, Rita VAN DINGENEN, Aki VIRKKULA, Jean-Philippe PUTAUD, A. EVEN, Harry TEN BRINK, Andreas BLATTER, Albrecht NEFTEL und Heinz W. GÄGGELER, 2002. Urban and rural aerosol characterization of summer smog events during the PIPAPO field campaign in Milan, Italy. Journal of Geophysical Research: Atmospheres. 2002. Bd. 107, Nr. D22, S. LOP 6–1–LOP 6–14. DOI 10.1029/2001jd001292. Verfügbar unter: https://irf.fhnw.ch/handle/11654/46838