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<br />What wind speeds, directions and direction fluctuations <br />accompany the apparently seedable situations (related <br />to seeding generator placement and spacing)? <br /> <br />The sections that follow attempt to provide some insight <br />into the characteristics of the Arizona winter storms that <br />were studied during the field program. A preliminary winter <br /> <br />. <br />storm climatology, primarily of a few storm types and their <br />composition in regard to SLW and precipitation amount, is <br />presented along with some general statistics of winter storm <br />durations and frequencies. It would be presumptuous to assume <br />that sampling periods during two months of one winter season <br />is going to provide all the necessary information to determine <br />completely whether cloud seeding would be an effective means <br />of augmenting Arizona's water supply. On the other hand, <br />as a first look it does provide some basic information that <br />will be useful in answering the question as to whether SLW <br />was present at all and therefore whether there was any possibility <br />that cloud seeding technology might be effective. The knowledge <br />gained will be very useful in designing a follow-up program. <br /> <br />3.1 Preliminary Winter storm Climatology of the Arizona Mogollon <br />Rim <br /> <br />3.1.1 <br /> <br />Background <br /> <br />In January, 1987, the Division of Atmospheric Resources <br />Research (DARR) of the Bureau of Reclamation (the Bureau) <br />published a document for the Arizona Department of Water Resources <br />entitled Feasibility Study on Wintertime Cloud Seeding to <br />Augment Arizona Water Supplies. This document was authored <br />by several Bureau personnel including Mr. Jonnie Medina, who <br /> <br />3-3 <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />t <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />