Properties of jet engine combustion particles during the PartEmis experiment. Hygroscopic growth at supersaturated conditions

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Authors
Hitzenberger, Regina
Giebl, Heinrich
Petzold, Andreas
Gysel, Martin
Nyeki, Stephan
Baltensperger, Urs
Wilson, C. W.
Author (Corporation)
Publication date
31.07.2003
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01A - Journal article
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Geophysical Research Letters
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30
Issue / Number
14
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Wiley
Place of publication / Event location
Hoboken
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Abstract
During the EU Project PartEmis, the microphysical properties of aircraft combustion aerosol were investigated. This study is focused on the ability of exhaust aerosols to act as cloud condensation nuclei (CCN). The combustor was operated at two different conditions representing old and modern aircraft engine technology. CCN concentrations were measured with the University of Vienna CCN counter [Giebl et al., 2002] at supersaturations around 0.7%. The activation ratio (fraction of CCN in total aerosol) depended on the fuel sulphur content (FSC) and also on the operation conditions. CCN/CN ratios increased from 0.93 through 1.43 to 5.15*10ˉ³ (old cruise conditions) and 0.67 through 3.04 to 7.94*10ˉ³ (modern cruise conditions) when FSC increased from 50 through 410 to1270 μg/g. The activation behaviour was modelled using classical theories and with a semi-empirical model [Gysel et al., 2003] based on measured hygroscopicity of the aerosol under subsaturated conditions, which gave the best agreement.
Keywords
Subject (DDC)
550 - Geowissenschaften
620 - Ingenieurwissenschaften und Maschinenbau
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0094-8276
1944-8007
Language
English
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No
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Published
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Peer review of the complete publication
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Citation
HITZENBERGER, Regina, Heinrich GIEBL, Andreas PETZOLD, Martin GYSEL, Stephan NYEKI, Ernest WEINGARTNER, Urs BALTENSPERGER und C. W. WILSON, 2003. Properties of jet engine combustion particles during the PartEmis experiment. Hygroscopic growth at supersaturated conditions. Geophysical Research Letters. 31 Juli 2003. Bd. 30, Nr. 14. DOI 10.1029/2003gl017294. Verfügbar unter: https://irf.fhnw.ch/handle/11654/46810