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<br />OfflQhq <br />UU.p!., <br /> <br /> <br />Expenditures under the Atmospheric Water Resources Program for <br /> <br /> <br />fiscal years 1962 through 1966 are tabulated in Table 1. This initial <br /> <br /> <br />program is an operationally oriented engineering research effort, <br /> <br /> <br />aimed at learning the circumstances under which precipitation modi- <br /> <br /> <br />fication techrliques may increase inflow into water supply systems, <br /> <br /> <br />and at developing a practical capability to do so. <br /> <br />~. <br />~~~~~ <br />i"t'-";'<",,;'iJ, <br /> <br />The program has been empirical, based on knowledge and experience <br /> <br /> <br />already available, Techrlical systems are now available for meas- <br /> <br /> <br />uring the physical characteristics of the atmosphere, delivering seed- <br /> <br /> <br />ing materials, and evaluating the results. Field experiments using <br /> <br /> <br />these systems are constantly providing additional knowledge of the <br /> <br /> <br />atmospheric data and experience for improving future systems and <br /> <br /> <br />techrliques. <br /> <br /> <br />Field experiments to date have been concentrated on types of cloud <br /> <br /> <br />formations known to occur regularly in certain areas over extended <br /> <br /> <br />periods of time. Field laboratories have been established in some <br /> <br /> <br />of the most promising of these areas. Research and practical exper- <br /> <br /> <br />iments conducted at these locations offer the best immediate oppor- <br /> <br /> <br />tunities for gaining added experience and knowledge in precipitation <br /> <br /> <br />modification techniques, The knowledge gained will be applicable in <br /> <br /> <br />the future to develop techniques for the treatment of other cloud types <br /> <br /> <br />in other areas. The Atmospheric Water Resources Program has <br /> <br /> <br />attracted imaginative and practical scientists and technicians who <br /> <br /> <br />believe that this approach will develop the capability to augment <br /> <br />i'$.' <br />~ <br />~ /~ <br /> <br /> <br />. - -, -':~.~-.' ".".' <br />:<+.F~;;<::~\ <br />17 -~.;,.-., ;"" ,-r <br />'ti~j6>;': <br />i~::i?~;:~~~:: ~::;.~ <br />:"-~:_~:-.- ">.:;:-.' .. <br />,: -.- .~~~.::.,--";.;/ <br />-".:_;. - ~:.-;:::.' <br /> <br /> <br />'r~~~~~~~!~i~?~iIsf~~~]1Jj2~;J~~~i~~:J~~1~b~;~i~~lf~~~J~~[f!~ii;~1t~~j?[f~'I!;!;"~~E!f:r~':;!~~l~;~t~j~;!~;;~'~~~!~! <br />