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

Cozic, J. and Verheggen, B. and Weingartner, E. and Crosier, J. and Bower, K. and Flynn, M. and Coe, H. and Henning, S. and Steinbacher, M. and Collaud Coen, M. and Petzold, A. and 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, pp. 407-423.

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

Abstract

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.

Document Type:Article
Title:Chemical composition of free tropospheric aerosol for PM1 and coarse mode at the high alpine site Jungfraujoch
Authors:
AuthorsInstitution or Email of Authors
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.UNSPECIFIED
Baltensperger, U.PSI, Villigen, CH
Date:2008
Journal or Publication Title:Atmospheric Chemistry and Physics
Refereed publication:Yes
In Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:8
Page Range:pp. 407-423
Status:Published
Keywords:chemical composition, tropospheric aerosol, coarse mode, Jungfraujoch
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Air Traffic and Weather (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Trace Species
Deposited By: Jana Freund
Deposited On:12 Sep 2007
Last Modified:20 Oct 2014 14:32

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