A Modeling Study of the Impact of Ice Particle Sizes and Relative Velocity on Non-inductive Charge Transfer
Theoretical investigations on the impact of ice particle sizes and relative velocity on the sign of non-inductive charge transfer during graupel/ice crystal interactions in thunderstorms are performed. The numerical simulations are carried out based on the concept of the Relative Growth Rate Hypothesis that the ice surface growing faster by water vapor diffusion charges positively. Diffusional growth rates of ice crystals and riming graupel particles are calculated for various particle sizes and velocities, and the sign of the non-inductive charging during crystal/graupel collisions is determined. Our study reveals that increasing the graupel particle size favors negative graupel charging, while increasing ice crystal size, or the relative velocity, favors positive graupel charging.
B. Tsenova R. Mitzeva C. Saunders
National Institute of Meteorology and Hydrology, Bulgarian Academy of Sciences, Bulgaria Department of Meteorology, Faculty of Physics, University of Sofia, Bulgaria School of Earth, Atmospheric and Environmental Sciences, The University of Manchester, England
国际会议
第13届国际大气电学会议(The 13th International Conference on Atmospheric Electricity)
北京
英文
2007-08-13（万方平台首次上网日期，不代表论文的发表时间）