Atmos. Chem. Phys. Discuss., 4, 3077-3088, 2004
www.atmos-chem-phys-discuss.net/4/3077/2004/
doi:10.5194/acpd-4-3077-2004
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This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
Laboratory evidence for volume-dominated nucleation of ice in supercooled water microdroplets
D. Duft and T. Leisner
Institut für Physik, Technische Universität Ilmenau, 98684 Ilmenau, Germany

Abstract. We report on measurements of the rate of homogeneous ice nucleation in supercooled water microdroplets levitated in an electrodynamic balance. By comparison of the freezing probability for droplets of radius 49 µm and 19 µm, we are able to conclude that homogeneous freezing is a volume-proportional process and that surface nucleation might only be important, if at all, for much smaller droplets.

Citation: Duft, D. and Leisner, T.: Laboratory evidence for volume-dominated nucleation of ice in supercooled water microdroplets, Atmos. Chem. Phys. Discuss., 4, 3077-3088, doi:10.5194/acpd-4-3077-2004, 2004.
 
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