Laboratory Measurement of Falling Velocity of Individual Ice crystals

Abstract

Measurements of falling velocity of individual ice crystals produced by dry ice seeding were made in a cold room. The falling velocity was measured by stroboscopic photographs of falling ice crystals and each crystal was replicated to observe the shape and size.
The relationship between the falling velocity and the dimension of crystals was obtained for the plane and the columnar type of crystals. Moreover, the measured falling velocity was generally explained by the computation method which use the drag coefficient obtained from the model experiment.