Development of Instrumentation for the Property of Snow Flakes

Abstract

A new detecting system for size of falling snow flakes is studied by optical sensing method. This system continuously covers 1 mm through 5 mm in radius. Falling velocity of snow flakes affects the system sensitivity, we tune it to about 60 cm/s in velocity. Test observation, performed for 1988's winter, shows that the new system works well and may be useful to detect the intensity of snow fall.