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Aircraft-based operation of an aerosol mass spectrometer: Measurements of tropospheric aerosol composition

Schneider, Johannes and Hings, Silke S. and Nele Hock, B. and Weimer, Silke and Borrmann, Stephan and Fiebig, Markus and Petzold, Andreas and Busen, Reinhold and Kärcher, Bernd (2006) Aircraft-based operation of an aerosol mass spectrometer: Measurements of tropospheric aerosol composition. Journal of Aerosol Science, 37, pp. 839-857. DOI: 10.1016/j.jaerosci.2005.07.002.

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Official URL: http://www.elsevier.com/locate/jaerosci

Abstract

The Aerodyne quadrupole aerosol mass spectrometer was deployed on the Falcon twin jet research aircraft operated by Deutsches Zentrum für Luft- und Raumfahrt (DLR). This was the first deployment of an AMS in a jet aircraft. Aerosol mass concentration measurements in the troposphere up to altitudes of about 11 km were performed within two measurement flights on 12 and 14 May 2003 over southern Germany. Background aerosol data were gained up to 6 km, while aircraft exhaust aerosol was be sampled at higher altitudes on 14 May, indicating the presence of sulfuric acid and unburned hydrocarbons in the exhaust particles. The boundary layer aerosol on 12 May was found to be composed of 49% organics, 12% sulfate, 15% ammonium, and 24% nitrate by mass. The upper edge of the boundary layer was marked by a sharp decrease of nitrate and ammonium at an altitude of 3 km, while sulfate and organics decreased to a much lesser degree. On 14 May, the boundary layer aerosol was composed of 23% organics, 20% sulfate, 24% ammonium, and 33% nitrate by mass, and the boundary layer reached up to about 5000m and had no sharp upper edge. The size distributions indicated internal mixtures of ammonium sulfate and –nitrate in the boundary layer, while the organics were externally mixed. Additionally, a smaller mode consisting only of ammonium sulfate, was detected. This bimodal structure of ammonium sulfate was also detected above the boundary layer in 6 km altitude on 14 May.

Document Type:Article
Title:Aircraft-based operation of an aerosol mass spectrometer: Measurements of tropospheric aerosol composition
Authors:
AuthorsInstitution or Email of Authors
Schneider, JohannesMPI, Mainz
Hings, Silke S.MPI, Mainz
Nele Hock, B.MPI, Mainz
Weimer, SilkeMPI, Mainz
Borrmann, StephanUNSPECIFIED
Fiebig, MarkusUNSPECIFIED
Petzold, AndreasUNSPECIFIED
Busen, ReinholdUNSPECIFIED
Kärcher, BerndUNSPECIFIED
Date:2006
Journal or Publication Title:Journal of Aerosol Science
Refereed publication:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:37
DOI:10.1016/j.jaerosci.2005.07.002
Page Range:pp. 839-857
Status:Published
Keywords:Aircraft measurements, Aerosol chemical composition, Aerosol mass spectrometry
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Atmosphären- und Klimaforschung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Trace Species
Institute of Atmospheric Physics > Atmospheric Dynamics
Deposited By: Jana Freund
Deposited On:12 Jul 2006
Last Modified:11 Nov 2014 21:56

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