Atmos. Chem. Phys. Discuss., 3, 3361-3372, 2003
www.atmos-chem-phys-discuss.net/3/3361/2003/
doi:10.5194/acpd-3-3361-2003
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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.
Comment on evidence for surface-initiated homogenous nucleation
J. E. Kay1, V. Tsemekhman2, B. Larson1, M. Baker1, and B. Swanson1
1Department of Earth and Space Sciences, University of Washington, Seattle, USA
2Applied Physics Laboratory, University of Washington, Seattle, USA

Abstract. We investigate theoretical, laboratory, and atmospheric evidence for a recently proposed hypothesis: homogenous ice nucleation occurs at the surface, not in the volume, of supercooled water drops. Using existing thermodynamic arguments, laboratory experiments, and atmospheric data, we conclude that ice embryo formation at the surface cannot be confirmed or disregarded. Ice nucleation rates measured as a function of drop size in an air ambient could help distinguish between volume and surface nucleation rates.

Citation: Kay, J. E., Tsemekhman, V., Larson, B., Baker, M., and Swanson, B.: Comment on evidence for surface-initiated homogenous nucleation, Atmos. Chem. Phys. Discuss., 3, 3361-3372, doi:10.5194/acpd-3-3361-2003, 2003.
 
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