Articles | Volume 21, issue 13
https://doi.org/10.5194/acp-21-10779-2021
https://doi.org/10.5194/acp-21-10779-2021
Research article
 | 
16 Jul 2021
Research article |  | 16 Jul 2021

Ice nucleation ability of ammonium sulfate aerosol particles internally mixed with secondary organics

Barbara Bertozzi, Robert Wagner, Junwei Song, Kristina Höhler, Joschka Pfeifer, Harald Saathoff, Thomas Leisner, and Ottmar Möhler

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Latest update: 12 Jul 2024
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Short summary
Internally mixed particles composed of sulfate and organics are among the most abundant aerosol types. Their ice nucleation (IN) ability influences the formation of cirrus and, thus, the climate. We show that the presence of a thin organic coating suppresses the heterogeneous IN ability of crystalline ammonium sulfate particles. However, the IN ability of the same particle can substantially change if subjected to atmospheric processing, mainly due to differences in the resulting morphology.
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