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<br />I. <br /> <br />FUTURE RESEARCH NEEDS <br /> <br />Man has attempted to control the weather for centuries. Weather modification <br />as researched and practiced today began with the 1946 experiments of Irving <br />Langmuir and Vincent Schaefer at the General Electric Laboratories in <br />Schenectady, New York. They discovered that certain clouds and precipitation <br />processes could be altered with application of either silver iodide or dry ice. <br /> <br />Since those early days of "rainmaking", weath€~r modification has been used to <br />varying degrees in Colorado to increase rain, decrease hail and augment winter <br />mountain snowpack. Although still controversial, utilization of cloud seeding <br />technology in Colorado has found increased acceptance. As a newly developing <br />SC1.ence it prompts continual questioning. Studies indicate that winter cloud <br />seeding to increase mountain snowpack is the closest of cloud seeding <br />technologies to pr~ctical widespread conunerci8ll application.l[l] Winter <br />seeding has significant potential use in Colorado because of the state's <br />mountain topography. <br /> <br />Interest in Winter Snow pack Augmentation <br /> <br />Due to the current interest 1.n the commercial application of winter cloud <br />seeding in Colorado and the program proposed by the Bureau of Reclamation to <br />augment the flow of the Colorado River, the research needs identified in this <br />report relate to winter seeding. The goal of the Bureau program, entitled <br />~olorado River Enhanced Snowpack Test (CREST), is augmentation of the flow of <br />the Colorado River to meet the obligation of the United States to supply water <br />to Mexico and the growing demands for water in the basin. <br /> <br />Strong interest in studying the physical aspects of snow producing clouds and <br />the impacts of snow on society exists 1.n the weather modification conununity. <br />Issues raised by those engaged in the study of weather modification are <br /> <br />1 - Numbers 1.n brackets refer to entries in the bibliography. <br /> <br />1 <br /> <br />-- , <br />~----_._._- <br />