Meteorological investigations of the effects of seeding clouds for increasing precipitation

TitleMeteorological investigations of the effects of seeding clouds for increasing precipitation
Publication TypeConference Proceedings
Year of Conference1950
AuthorsGrant, L. O.
Conference Name18th Annual Western Snow Conference
Series TitleProceedings of the 18th Annual Western Snow Conference
Date PublishedApril 1950
PublisherWestern Snow Conference
Conference LocationBoulder City, Nevada
KeywordsWeather research
Abstract

Techniques for segregating the effects on precipitation of cloud seeding with dry ice and silver iodide are investigated. Weather records of Phoenix, Arizona for 1937-1947 were studied with respect to temperatures at different levels, stability of the atmosphere, winds, pressures at different levels, tropopause heights, and surface dewpoints. The weather records were compared with the result of seeding clouds during July 1948, Rain was observed after several of the seeding operations. Ground generators of silver iodide have given more consistent positive results than seeding by aeroplane.