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Cloud Seeding Research

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Cloud Seeding Research
As early as the 1940s, scientists and engineers have been conducting experimental trials, analyzing statistics, and searching to find specific methods that will result in increasing and augmenting natural rainfall and snowfall within different geographical areas of our planet. Despite extensive research over the years, up to only a few years ago statistical analysis of these weather and precipitation modification efforts commonly referred to as cloud seeding had not produced the scientifically convincing proof that is required to reach pertinent and reasonably accurate conclusions about the true effectiveness of cloud seeding efforts. This has changed with recent advances in instrumentation technology, additional study time, and the use of different statistical procedures to analyze cloud seeding data results over the last several decades (Morrison, Siems, Manton, & Nazarov, 2009).
The process of cloud seeding involves the introduction of chemicals and substances such as silver iodide, acetone, dry ice, and liquefied propane to increase ice crystals with specific clouds prior to storm activity that in theory result in greater precipitation in the form of rain or snow in a specific geographical area. Any practically significant cloud seeding project attempts to increase precipitation over a region and provide some type of economic significance, for example as in the case of increased snowfall for a ski resort or increased water availability for farmers to plant and irrigate additional crops. Cloud seeding projects are currently operating in various areas of the world, including Israel, Thailand, northern Arizona, the western half of Colorado, Montana, Washington, and northern Utah (Morrison, Siems, Manton, & Nazarov, 2009). The Sierra Nevada and Carson mountain ranges in northern California and northern Nevada has been the location of the

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