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<br />Method to be used by applicant to achieve said objective
<br />is the introduction of silver iodide from ground-based gen-
<br />erators into all storms and cloud systems favorable for
<br />. significant precipitation increase.AgI plume width charts,
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<br />.. .... AgI..rising rate charts" seeding. indexes, and all i.n conjunc-
<br />tion with detailed-analysis of rasondes representative of
<br />... the air .'masses forecast to ..influence the target will be used.
<br />As soon as the AgI plumes are deve.loped,the appropriate
<br />generator operators are phoned and told to turn on their
<br />generators and on the same call, a turn-off time' is given
<br />..subject.to change from the control laboratory. A continuous
<br />monitor of the data makes it possible to modifythe.operation
<br />as'weather changes occur. A field technician located near
<br />the target handles.the installation and maintenance of gener-
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<br />4.) Description.of'the seeding devices, materials and
<br />seeding rates, etc.
<br />
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<br />,:. This particular Model 17 (30) was developed specifically for
<br />rain and'snow ihcrease operations. It has proven efficient,
<br />'safe and needs little maintenance. The output of 0.5 grams
<br />of silver iodide per unit per houris in the..range for..
<br />.:. optimum . efficiency.,... This.. particular, .model ha.sbeen used.: .for
<br />cloudseeding in Colorado since the mid-50s.
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<br />,The output of ice nuclei is approximately ~.68 x 1014 per
<br />..gram at about -17 degrees C. . An electric arc. vaporiz.es .
<br />. .silver iodide electrodes. A fan. holds the arc ,in position
<br />and quickly blows the nuclei outside the generator.
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<br />CLient operates a minimum of four seasons out.
<br />In consultation with the client, WRDC makes a
<br />. seed or' I,ot,seed for'any given year, based on
<br />., tions and .our long range. weather 'forecast for
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<br />'A 'fe~sibility study. is prepared based. on antec';dent meteor-
<br />ological conditions, current -water storage, and the' number
<br />.of favorable seeding situations anticipated for the season.
<br />This ,study aids in location of the generators.
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