Abstract
A special sonde for measuring cloud particles has been developed. The sonde has a small TV camera, and is called a Cloud Particle Video Sonde (CPVS). The CPVS transmits images of cloud particles from 7μm to 1000μm diameter over a 1.6 GHz microwave link to a ground station. Observations have shown that the CPVS provides highly quality images of cloud particles at altitudes up to 12km MSL. Using the collection efficiency of the CPVS for water droplets determined from a laboratory experiment, the number concentration of cloud particles and the variation of their size distribution with height can be calculated.
