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<br />3. Continue to develop climatologies of microphysical and <br />dynamical cloud properties and mesoscale cloud patterns which <br />bear on the potential for weather modification. <br /> <br />e <br /> <br />" <br /> <br />4. Obtain data to evaluate whether radar alone, precipitation <br />gages alone, or some combination of the two provide the most <br />accurate and reliable method of obtaining precipitation measure- <br />ments for evaluation of cloud seeding. <br /> <br />" <br /> <br />5. Obtain data from two acoustic sounders to determine if remote <br />sensing techniques can be used to observe and predict the degree <br />of vertical mixing available to seeding agents released from the <br />ground or air. <br /> <br />Preliminary results of the studies conducted during the past 2 years <br />indicate that: <br /> <br />e <br /> <br />1. The feasibility of using the Skywater 5-cm radar as an <br />instrument for the observation and analysis of winter orographic <br />storms has been demonstrated. The radar site has proven to be a <br />good location for eliminating ground clutter without major <br />blockage. <br /> <br />2. Sierra Nevada storms are strongly banded. Almost all bands <br />form over the Pacific or the coastal range and move across the <br />Sacramento-San Joaquin Valley, up the west slope of the Sierra <br />Nevada, and across into Nevada. Major intensification of the <br /> <br />- <br /> <br />1-8 <br />