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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
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Volume 3, issue 5 | Copyright
Atmos. Chem. Phys., 3, 1439-1443, 2003
https://doi.org/10.5194/acp-3-1439-2003
© Author(s) 2003. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

  22 Sep 2003

22 Sep 2003

Comment on evidence for surface-initiated homogeneous nucleation

J. E. Kay1, V. Tsemekhman2, B. Larson1, M. Baker1, and B. Swanson1 J. E. Kay et al.
  • 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: homogeneous ice nucleation initiates 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.

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