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    An improved method of ice nucleus measurement

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    Author
    Shih, Chi-Fan G.
    Keyword
    Ice nuclei
    Metadata
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    URI
    http://hdl.handle.net/11122/7670
    Abstract
    Ice nuclei, which initiate the ice nucleation process at a higher temperature than the homogeneous nucleation temperature, are essential for the initiation of the ice phase in clouds. Unfortunately, no standard method has been established for the measurement of ice nucleus concentration. The filter technique is a promising candidate if the tendency for ice nucleus concentrations to decreases as the volume sampled increases can be explained. For this study, an improved ventilation method for the development of exposed filters was developed and tested. The results were compared with results obtained in a static diffusion chamber. The volume effect was observed to be less with the new dynamic system. Further work needs to be done to find the optimum flow rate in order to reduce the vapor depletion problem to a minimum. The ratio of total counts of dynamic and static system appears to be a promising evaluation index.
    Description
    Thesis (M.S.) University of Alaska Fairbanks, 1982
    Date
    1982-09
    Type
    Thesis
    Collections
    Atmospheric Sciences

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