Structure and Modification of Clouds and Fogs.
Annual summary rept. no. 3,
STATE UNIV OF NEW YORK ALBANY RESEARCH FOUNDATION
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Considerable investigation of electric field-water droplet interaction has been conducted and may offer a mechanism for the rain gush. Charge separation by precipitation and the production of aerosols from charged electrodes at potentials below breakdown have also been investigated. The research into electrical tornado mechanisms and the field study of point discharge current previously reported have been continued. Studies have been conducted on water-to-air transfer of bacteria. Experimental studies of droplet breakup, freezing, and wake effect have been carried out. A new model of hail growth is proposed which does not require wind shear to maintain the hailstone aloft for extended periods of time. A cloud model has been computer tested to ascertain the feasibility of extensive cloud production by silver iodide seeding. The large vertical wind tunnel has been further refined, and the dropsonde, intended to obtain drop size and concentratio spectra, has been field tested, as has an ice crystal detector for aircraft use. An optical lightning detector has been developed. Author