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Last modified
7/28/2009 2:29:02 PM
Creation date
2/12/2007 10:40:38 AM
Metadata
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Template:
Weather Modification
Project Name
Evaluation of Operational Seeding in Western Kansas
Title
Evaluation of Perational Cloud Seeding in Western Kansas
Prepared For
State of Kansas
Prepared By
USBR
Date
11/1/1987
State
KS
Weather Modification - Doc Type
Report
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<br />TABLES <br /> <br />2.1 Counties participating in the project ............................... 5 <br />2.2 Bases for deployment of seeding aircraft ............................ 6 <br />2.3 Summary of project operations .................................. 6 <br />2.4 Seeding devices used in the project ................................ 7 <br />3.1 Mean seasonal (May-August) rainfall (inches) for target and <br /> <br />control areas ...............,............................. 18 <br /> <br />3.2 Double ratio results for the northwest control, the west control, <br />and the statistical control ..................................... 19 <br /> <br />FIGURES <br /> <br />1.1 Study area for the Western Kansas Weather Modification Project ........... 2 <br />2.1 Western third of Kansas, showing counties that participated in the <br />project and towns at which project aircraft were located .................. 4 <br />2.2 Distribution of all seeding agents, May-August 1977-85 . . . . . . . . . . . . . . . . . . 9 <br />2.3 Distribution of silver iodide only, May-August 1977-85.....,..........,. 10 <br />2.4 Distribution of dry ice only, May-August 1977-85 . . . . . . . . . ., . . . . . . . . . . . . .11 <br />3.1 Target area and northwest and west control areas . . . . . . . . . . . . . . . . . . . . . .. 12 <br />3.2 Average May-August rainfall, 1948-1974 . . . . . . . . . . . . . . . . . . . . . . . . . . .. 14 <br />3.3 Average May-August rainfall, 1975-1985 . . . . . . . . . . . . . . . . . . . . . . . . . . .. 15 <br />3.4 Average July rainfall, 1948-1974 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 <br />3.5 Average July rainfall, 1975-1985 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . 17 <br />3.6 Ratio of average May-August rainfall during seed years (1975-85) to average <br />May-August rainfall during no-seed years (1948-74) . . . . . . . . . . . . . . . . . . . . 20 <br />3.7 Regions (shaded) where May-August rainfall during seed years (1975-85) <br />was significantly different than that during no-seed years . . . . . . . . . . . . . . . . . . . 22 <br />3.8 Ratio of average July rainfall during seed years (1975-85) to average July <br />rainfall during no-seed years (1948-74) . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 23 <br />3.9 Regions (shaded) where July rainfall during seed years was significantly <br />different from that during no-seed years . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 24 <br />4.1 Average loss-cost ratio for the years 1948-1974 ....................... 27 <br />4.2 Ratio of average loss-cost during seed years to average loss-cost during <br /> <br />no-seed years .............................................. 29 <br /> <br />4.3 Probability that loss-cost ratios during seed years were greater than those <br />during no-seed years, as calculated by the Wilcoxon rank-sum test. . . . . . . . . .. 30 <br />4.4 Relative numbers of tall thunderstonns moving from directions from south <br />through west to north across western Kansas ..................,....... 32 <br />4.5 Double ratio calculated to detennine relative importance of hail as contributor <br />to total precipitation during seed and no-seed years ..................... 34 <br /> <br />~. <br /> <br />e <br />
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