Research into the condition of air-mass frontal layered cloudiness above the North-West Region of Russia in respect to the problem of active modifications of clouds
The research of the phase structure of air-mass and frontal layered cloudiness aimed at artificial precipitation control during both warm and cold season of the year is completed. The results are based on the data, collected during 8000 flights of meteorological reconnaissance aircrafts, equipped with special devices, within the period from 1953 till 1964. It is shown that nephystems are either overchilled (liquid-drop) or mixed in winter and in summer, repeating in 95-100 %. The crystalline phase is marked in single occasions reaching only 2 %. The research of the phase structure of winter clouds provides the ground for substantiation of the possibility of using traditional reagents (solidified carbon dioxide, liquid nitrogen, silver iodide etc.) in order to prevent (change intensiveness) of winter snowfalls that effect public services of megacities and cause damage to traffic lines. Introduction of a small amount of reagents facilitates changing of the phase condition of clouds. That allows to perform active modifications of air-mass and frontal nephystems aimed at artificial precipitation control during the entire calendar year.