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Chemical composition of free tropospheric aerosol for PM1 and coarse mode at the high alpine site Jungfraujoch

Cozic, J. und Verheggen, B. und Weingartner, E. und Crosier, J. und Bower, K. und Flynn, M. und Coe, H. und Henning, S. und Steinbacher, M. und Collaud Coen, M. und Petzold, A. und Baltensperger, U. (2008) Chemical composition of free tropospheric aerosol for PM1 and coarse mode at the high alpine site Jungfraujoch. Atmospheric Chemistry and Physics, 8, Seiten 407-423.

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Offizielle URL: http://www.atmos-chem-phys.net/8/407/2008/

Kurzfassung

The chemical composition of submicron (fine mode) and supermicron (coarse mode) aerosol particles has been investigated since 1999 within the GAW aerosol monitoring program at the high alpine research station Jungfraujoch (3580 m a.s.l., Switzerland). Clear seasonality was observed for all major components in the last 9 years with low concentrations in winter (predominantly free tropospheric aerosol) and higher concentrations in summer (enhanced vertical transport of boundary layer pollutants). In addition, mass closure was attempted during intensive experiments in March 2004, February–March 2005 and August 2005. Ionic, carbonaceous and refractory components of the aerosol were quantified as well as the PM1 and coarse mode total aerosol mass concentrations. A relatively low conversion factor of 1.8 for organic carbon (OC) to particulate organic matter (OM) in winter (February–March 2005) was found. Organics, sulfate, ammonium, and nitrate were the major identified components of the fine aerosol fraction, while calcium and nitrate were the two major measured components in the coarse mode. The aerosol mass concentrations for fine and coarse mode aerosol during the intensive campaigns were not typical of the long term seasonality due largely to dynamical differences. Average fine and coarse mode concentrations during the intensive field campaigns were 1.7 μg m-3 and 2.4 μg m-3 in winter and 2.5 μg m-3 and 2.0 μg m-3 in summer, respectively. The mass balance of aerosols showed higher contributions of calcium and nitrate in the coarse mode during Saharan dust events (SDE) than without SDE.

Dokumentart:Zeitschriftenbeitrag
Titel:Chemical composition of free tropospheric aerosol for PM1 and coarse mode at the high alpine site Jungfraujoch
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Cozic, J.PSI, Villigen, CH
Verheggen, B.PSI, Villigen, CH
Weingartner, E.PSI, Villigen, CH
Crosier, J.Univ. of Manchester, UK
Bower, K.Univ. of Manchester, UK
Flynn, M.Univ. of Manchester, UK
Coe, H.Univ. of Manchester, UK
Henning, S.Leibniz-Inst. for Tropospheric Research, Leipzig
Steinbacher, M.Empa, Dübendorf, CH
Collaud Coen, M.MeteoSwiss, Payerne, CH
Petzold, A.NICHT SPEZIFIZIERT
Baltensperger, U.PSI, Villigen, CH
Datum:2008
Erschienen in:Atmospheric Chemistry and Physics
Referierte Publikation:Ja
In Open Access:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:8
Seitenbereich:Seiten 407-423
Status:veröffentlicht
Stichwörter:chemical composition, tropospheric aerosol, coarse mode, Jungfraujoch
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:L VU - Luftverkehr und Umwelt (alt)
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L VU - Luftverkehr und Umwelt
DLR - Teilgebiet (Projekt, Vorhaben):L - Luftverkehr und Wetter (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre > Atmosphärische Spurenstoffe
Hinterlegt von: Jana Freund
Hinterlegt am:12 Sep 2007
Letzte Änderung:20 Okt 2014 14:32

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