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Last modified
7/28/2009 2:32:39 PM
Creation date
1/8/2008 12:16:50 PM
Metadata
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Template:
Weather Modification
Applicant
Thompson, J.R., G.W. Wilderson, and D.A. Griffith, North American Weather Consultants
Sponsor Name
USBR
Title
Cloud Seeding Data Collection, and Analysis Assoc. with the Colo River Augmentation Demonstration Program
Prepared For
USBR, Divison of Atmospheric Research
Prepared By
Thompson, Wilderson, Griffith
Date
12/1/1987
State
AZ
Weather Modification - Doc Type
Scientific Study
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<br />ground sites upwind of the high plateau to simulate <br />the release of cloud seeding material from ground-based <br />generators. <br /> <br />7) An aspirated PMS 2D-C ground probe to record two- <br />dimensional images of rain or snow particles at <br />ground level. These observations were supplemented <br />with high resolution photographs of ice crystals. <br /> <br />8) A network of seven high resolution recording precipi- <br />tation gauges. <br /> <br />9) Cameras at two sites to provide periodic daytime <br />photographs of the cloud cover over the Rim. One <br />site included a 16 rom time-lapse camera system. <br /> <br />The above observations were supplemented by National <br />Weather Service (NWS) satellite imagery of cloud characteristics <br />and patterns over the area plus facsimile copies of standard <br />NWS synoptic charts which were used to make real-time operating <br />decisions or for planning future operations. They were also <br />used as an aid in post-season analyses of the case studies <br />of particular interest. <br /> <br />Some of the instrumentation systems were installed as <br />early as the November-December 1986 period and all systems <br />were installed and operating prior to mid-January 1987. The <br />field program officially started operations on January 21, <br />1987, (with the arrival of the instrumented aircraft) and <br />extended through March 17, 1987. However, some data were <br />collected prior to the January 21st date. <br /> <br />2-5 <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />, <br />I <br />I <br />I <br />I <br />t <br />I <br />, <br />I <br />I <br />I <br />a <br />1 <br />
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