A Numerical Study of the Effect of Electric Charges on the Efficiency with which Planar Ice Crystals Collect Supercooled Cloud Drops
Open Access
- 1 November 1981
- journal article
- Published by American Meteorological Society in Journal of the Atmospheric Sciences
- Vol. 38 (11) , 2462-2469
- https://doi.org/10.1175/1520-0469(1981)038<2462:ansote>2.0.co;2
Abstract
A theoretical model is presented which allows determination of the efficiency with which electrically charged, simple planar ice crystals collide with electrically charged supercooled cloud drops. The calculations are carried out for ice crystal plates of diameter between 100 and 1300 μm colliding with cloud drops of diameters between 2 and 170 μm. The electric charges Q (esu) residing on the drops and ice crystals were assumed to vary with the radius a (cm) of the drop or crystal according to Q=qa2, with 0≤q≤2.0. Our results show that the efficiency with which supercooled drops the collected by simple Planar ice crystals is enhanced by electric charges, in particular, if q>0.8, where q=0.8 represents an electric charge still considerably below thunderstorm charge.Keywords
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