Recent Results in Thunderstorm Electrification - Figure 2
Fig. 2. One-cloud experiments operate differently to two-cloud experiments. In a one-cloud experiment, the target rod rotates in a cloud of supercooled water droplets and ice crystals. In a two-cloud experiment, separate clouds of droplets and crystals are grown and are then mixed together briefly before interacting with the target. We found this affects the surface properties of the ice crystals prior to interaction with the target in accordance with the Relative Growth Rate theory. Results from one-cloud experiments are therefore fundamentally different from and unresolvable with those from two-cloud experiments, owing to the different microphysics involved.