Abstract
This study conducted experimental simulations of cloud seeding on torrential rains with the forced-cooling technique in order to examine the mitigation effect and acceleration risk on precipitation. Some severe rainfall events including linear convective systems were simulated using a mesoscale meteorological model. Results of this study clarified that relatively small-scale cloud seeding as the discrete or dynamic seeding can produce some mitigation effects on precipitation. The mitigation and acceleration ratios calculated in all nine events and in four linear convective systems showed that precipitation from the latter events can be more readily decreased with the lower acceleration risk than other events by cloud seeding in the early stage of cloud development.
