Effects of Image Charges on the Scavenging of Aerosol Particles by Cloud Droplets and on Droplet Charging and Possible Ice Nucleation Processes

摘要: Abstract Previous calculations of the rate at which falling droplets in clouds collide with aerosols have led to conclusion that except thunderclouds any electrical charges on or little effect collision rate. However, it had been assumed would only a few elementary them, whereas is now known tops nonthunderstorm evaporating may several hundred them and much this charge remains residual aerosol for 5 min so after evaporation. Also, most previous neglected image forces provide strong attraction close range even when droplet same sign comparable magnitude. The authors present numerical showing effects dominate rates charged evaporation aerosols. are size 0.1- 1.0-μm radius efficiency co...