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<br />with emphasis on answering those questions that should be resolved before <br /> <br />the randomized experiment design is finalized. <br /> <br />B, Experimental Area and Facilities <br /> <br />The experimental area for the 1978 field' season is shmm in Figure 1. <br /> <br />The locations of towns and major streams are indicated, together with a <br /> <br />150-km radius circle around the }liles City radar, Precipitation echoes can <br /> <br />be identified at radar ranges beyond 150 km. However, the ability to <br /> <br />quantify precipitation rate seriously degrades with increased range. Conse- <br /> <br />quentlYJ experimental activities are generally not conducted beyond 150 km <br /> <br />from Miles City. <br /> <br />The major facilities to be utilized during the 1978 field season include <br /> <br />a new high-performance cloud physics aircraft (University of Wyoming (ffil) <br /> <br />King-Air Super 200), a Learjet seeding aircraft (Colorado International <br /> <br />Corporation (CIC), a 5-cm digitized radar with cloud physics measurement <br /> <br />capabilities, an automatic tracking RD-65A rawinsonde system, and ground- <br /> <br />based time-lapse cameras for cloud photography, all at Miles City. Additional <br /> <br />facilities at the HIPLEX offices, laboratories, and shops at the ~1i1es City <br /> <br />airport, include a remote job entry terminal and time-share terminals to <br /> <br />the CYBER computer system in Denver, and forecasting facilities including <br /> <br />teletype, facsimile, and laserfax for satellite photos, <br /> <br />The dense 109 site raingage network operated in 1976 and 1977 will <br /> <br />- - <br />not be operated in 1978, Instead, MDNRC (Montana Department of Natural <br /> <br />-Resources and Conservation) -will install anew, -expended. network of <br /> <br />approximately 250 gages during the summer and fall. <br /> <br />1-,3 <br />