Thunderstorm Electrification—Inductive or Non-Inductive?
| Autor: | Zev Levin, J. Doyne Sartor, Joachim P. Kuettner |
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| Rok vydání: | 1981 |
| Předmět: | |
| Zdroj: | Journal of the Atmospheric Sciences. 38:2470-2484 |
| ISSN: | 1520-0469 0022-4928 |
| DOI: | 10.1175/1520-0469(1981)038<2470:teoni>2.0.co;2 |
| Popis: | Most of the precipitation related theories on charge generation in thunderstorms fall into one of two categories: the inductive or polarization mechanism initiated by the ambient fair-weather field, and the non-inductive mechanism connected with certain electrochemical or thermoelectric particle characteristics. Our numerical study addresses the question of which mechanism gives more realistic results with regard to charge distribution and hold strength and what effect a combination of the two processes produces. The investigation is a first attempt using a simplified model. In this model the microphysical processes of particle growth and simultaneous electrification are embedded in a steady state two-dimensional vortex circulation with and without vertical wind shear. The net space charge and potential are obtained everywhere in the cloud and the resulting electric fields are calculated. Computations are made for the collisions of growing solid precipitation (graupel) particles with either super... |
| Databáze: | OpenAIRE |
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