Climatic Trends of Sierra Nevada Cloud Seeding Potential

Thomas F Lee

Abstract


Seasonal and interannual variations in Sierra Nevada winter storms are discussed with reference to cloud seeding potential. Seasonal variations occur with respect to snow level, storm type, vertical cloud distribution and mesoscale precipitation systems. Snowmelt and runoff may compound the importance of these seasonal variations. Interannual fluctuations, based on eight years of data from the American River Basin, suggest that seedable conditions are more frequent in years of normal and below-normal precipitation than in above-normal years.

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