Santa Clara Valley Weather Modification Programby A. D. Saah,
Abstract: This report describes a significant advancement in the Santa Clara Valley Water District's knowledge and understanding of its weather modification (cloudseeding) program, begun in 1955. This paper describes the following findings: 1. Cloudseeding is cost effective in increasing rainfall. The benefit/cost ratio is more than six. 2. There is an identifiable level of silver iodide injection (expressed in kilograms of silver iodide per storm) above which rainfall can occur. This level is referred to as the silver iodide injection threshold (IT). This paper is limited to the analysis of recorded observations and the statistical quantification of the effects of silver iodide injection.
Subject Headings: Regression analysis | Rainfall | Storms | Water management | Information Technology (IT) | Economic factors
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