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Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-30301
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dc.contributor.authorTesta, Baptiste-
dc.contributor.authorDurdina, Lukas-
dc.contributor.authorAlpert, Peter A.-
dc.contributor.authorMahrt, Fabian-
dc.contributor.authorDreimol, Christopher H.-
dc.contributor.authorEdebeli, Jacinta-
dc.contributor.authorSpirig, Curdin-
dc.contributor.authorDecker, Zachary C. J.-
dc.contributor.authorAnet, Julien-
dc.contributor.authorKanji, Zamin A.-
dc.date.accessioned2024-03-16T11:11:42Z-
dc.date.available2024-03-16T11:11:42Z-
dc.date.issued2023-11-06-
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/30301-
dc.description.abstractIce nucleating particles catalyse ice formation in clouds, affecting climate through radiative forcing from aerosol-cloud interactions. Aviation directly emits particles into the upper troposphere where ice formation conditions are favourable. Previous studies have used proxies of aviation soot to estimate their ice nucleation activity, however the investigations with commercial aircraft soot from modern in-use aircraft engine have not been quantified. In this work, we sample aviation soot particles at ground level from different commercial aircraft engines to test their ice nucleation ability at temperatures ≤ 228 K, as a function of engine thrust and soot particle size. Additionally soot particles were catalytically stripped to reveal the impact of mixing state on their ice nucleation ability. Particle physical and chemical properties were further characterised and related to the ice nucleation properties. The results show that aviation soot nucleates ice at or above relative humidity conditions required for homogeneous freezing of solution droplets (RHhom).We attribute this to a mesopore paucity inhibiting pore condensation and the sulfur content which suppresses freezing. Only large soot aggregates (400 nm) emitted under 30–100 % thrust conditions for a subset of engines (2/10) nucleate ice via pore condensation and freezing. For those specific engines, the presence of hydrophilic chemical groups facilitates the nucleation. Aviation soot emitted at thrust ≥100 % (sea level thrust) nucleates ice at or above RHhom. Overall our results suggest that aviation soot will not contribute to natural cirrus formation and can be used in models to update impacts of soot-cirrus clouds.de_CH
dc.format.extent47de_CH
dc.language.isoende_CH
dc.publisherEuropean Geosciences Unionde_CH
dc.rightshttp://creativecommons.org/licenses/by/4.0/de_CH
dc.subject.ddc629: Luftfahrt- und Fahrzeugtechnikde_CH
dc.titleSoot aerosol from commercial aviation engines are poor ice nucleating particles at cirrus cloud temperaturesde_CH
dc.typeWorking Paper – Gutachten – Studiede_CH
dcterms.typeTextde_CH
zhaw.departementSchool of Engineeringde_CH
zhaw.organisationalunitZentrum für Aviatik (ZAV)de_CH
zhaw.publisher.placeMunichde_CH
dc.identifier.doi10.5194/egusphere-2023-2441de_CH
dc.identifier.doi10.21256/zhaw-30301-
zhaw.funding.euinfo:eu-repo/grantAgreement/EC/H2020/875036//Advancing the Science for Aviation and ClimAte/ACACIAde_CH
zhaw.originated.zhawYesde_CH
zhaw.author.additionalNode_CH
zhaw.display.portraitYesde_CH
zhaw.relation.referenceshttps://doi.org/10.3929/ethz-b-000634341de_CH
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Testa, B., Durdina, L., Alpert, P. A., Mahrt, F., Dreimol, C. H., Edebeli, J., Spirig, C., Decker, Z. C. J., Anet, J., & Kanji, Z. A. (2023). Soot aerosol from commercial aviation engines are poor ice nucleating particles at cirrus cloud temperatures. European Geosciences Union. https://doi.org/10.5194/egusphere-2023-2441
Testa, B. et al. (2023) Soot aerosol from commercial aviation engines are poor ice nucleating particles at cirrus cloud temperatures. Munich: European Geosciences Union. Available at: https://doi.org/10.5194/egusphere-2023-2441.
B. Testa et al., “Soot aerosol from commercial aviation engines are poor ice nucleating particles at cirrus cloud temperatures,” European Geosciences Union, Munich, Nov. 2023. doi: 10.5194/egusphere-2023-2441.
TESTA, Baptiste, Lukas DURDINA, Peter A. ALPERT, Fabian MAHRT, Christopher H. DREIMOL, Jacinta EDEBELI, Curdin SPIRIG, Zachary C. J. DECKER, Julien ANET und Zamin A. KANJI, 2023. Soot aerosol from commercial aviation engines are poor ice nucleating particles at cirrus cloud temperatures. Munich: European Geosciences Union
Testa, Baptiste, Lukas Durdina, Peter A. Alpert, Fabian Mahrt, Christopher H. Dreimol, Jacinta Edebeli, Curdin Spirig, Zachary C. J. Decker, Julien Anet, and Zamin A. Kanji. 2023. “Soot Aerosol from Commercial Aviation Engines Are Poor Ice Nucleating Particles at Cirrus Cloud Temperatures.” Munich: European Geosciences Union. https://doi.org/10.5194/egusphere-2023-2441.
Testa, Baptiste, et al. Soot Aerosol from Commercial Aviation Engines Are Poor Ice Nucleating Particles at Cirrus Cloud Temperatures. European Geosciences Union, 6 Nov. 2023, https://doi.org/10.5194/egusphere-2023-2441.


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