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The Influence of Chemical and Mineral Compositions on the Parameterization of Immersion Freezing by Volcanic Ash Particles

Umo, N. S. 1; Ullrich, R. ORCID iD icon 1; Maters, E. C.; Steinke, I. 1; Benker, N.; Höhler, K. ORCID iD icon 1; Wagner, R. 1; Weidler, P. G. 2; Hoshyaripour, G. A. ORCID iD icon 3,4; Kiselev, A. 1; Kueppers, U.; Kandler, K.; Dingwell, D. B.; Leisner, T. ORCID iD icon 1; Möhler, O. 1
1 Institut für Meteorologie und Klimaforschung – Atmosphärische Aerosolforschung (IMK-AAF), Karlsruher Institut für Technologie (KIT)
2 Institut für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT)
3 Institut für Meteorologie und Klimaforschung – Forschungsbereich Troposphäre (IMK-TRO), Karlsruher Institut für Technologie (KIT)
4 Institut für Meteorologie und Klimaforschung (IMK), Karlsruher Institut für Technologie (KIT)


Volcanic ash (VA) from explosive eruptions contributes to aerosol loadings in the atmosphere. Aside from the negative impact of VA on air quality and aviation, these particles can alter the optical and microphysical properties of clouds by triggering ice formation, thereby influencing precipitation and climate. Depending on the volcano and eruption style, VA displays a wide range of different physical, chemical, and mineralogical properties. Here, we present a unique data set on the ice nucleation activity of 15 VA samples obtained from different volcanoes worldwide. The ice nucleation activities of these samples were studied in the Aerosol Interaction and Dynamics in the Atmosphere (AIDA) cloud simulation chamber as well as with the Ice Nucleation Spectrometer of the Karlsruhe Institute of Technology (INSEKT). All VA particles nucleated ice in the immersion freezing mode from 263 to 238K with ice nucleation active site (INAS) densities ranging from ∼10$^{5}$ to 10$^{11}$ m$^{-2}$, respectively. The variabilities observed among the VA samples, at any given temperature, range over 3.5 orders of magnitude. The ice-nucleating abilities of VA samples correlate to varying degrees with their bulk pyroxene and plagioclase contents as a function of temperature. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000137159
Veröffentlicht am 30.04.2022
DOI: 10.1029/2020JD033356
Zitationen: 3
Web of Science
Zitationen: 3
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Aerosolforschung (IMK-AAF)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 16.09.2021
Sprache Englisch
Identifikator ISSN: 2169-897X, 2169-8996
KITopen-ID: 1000137159
HGF-Programm 12.11.26 (POF IV, LK 01) Aerosol-Cloud-Climate-Interaction
Erschienen in Journal of geophysical research / D
Verlag John Wiley and Sons
Band 126
Heft 17
Seiten e2020JD033356
Vorab online veröffentlicht am 27.08.2021
Schlagwörter Cloud, Ice Nucleation, Aerosol, Volcanic Ash
Nachgewiesen in Web of Science
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