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Last modified
7/28/2009 2:28:14 PM
Creation date
10/1/2006 2:14:38 PM
Metadata
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Template:
Weather Modification
Contract/Permit #
#94-6
Applicant
North American Weather
Project Name
Willow Creek Basin
Date
11/1/1993
Weather Modification - Doc Type
Report
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<br />J <br /> <br />shown that minute particles of silver iodide begin to act effectively as ice nuclei at <br />temperatures colder than -50C (Dennis, 1980). <br /> <br />\ <br /> <br />Since there is a paucity of natural ice nuclei in the atmosphere at temperatures in <br />the range of _50 to -150C, most clouds are highly inefficient in converting water droplets <br />to ice crystals. The addition of silver iodide nuclei to these cloud regions can provide <br />additional ice crystals which, under the right conditions, gro\V and fall out of the cloud <br />as either snow or rain. Rain results from the melting of such crystals when they fall <br />through the subfreezing layer of air near the ground. This increase in efficiency is <br />usually referred to as a static seeding effect. <br /> <br />I i <br /> <br />, <br />, <br /> <br />} <br /> <br />2-2 <br />
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