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<br />gauge that had an orifice area five times that of the standard <br />20.3-cm gauge. Two sites also had 28.7-cm-diameter orifice <br />gauges. <br /> <br />A new PMS 2D-C ground station was obtained late in the <br />winter. This station was thoroughly tested, and was used for <br />interesting intercomparisons between a truck-mounted mode, <br />driven at a known speed, and a fixed, vertical aspirated mode. <br />However, no ice particle observations were made on Grand <br />Mesa. <br /> <br />A tethersonde balloon system was obtained late in the winter. <br />Some preliminary data were collected on wind shear In the <br />lowest few hundred meters above the Mesa. However, the <br /> <br />primary use of the system was for personnel familiarization <br />and equipment testing. <br /> <br />1.6 Analyses <br /> <br />Sections 2 through 7 discuss various analyses performed with <br />the data base available from the instrumentation systems <br />described, and are actually summaries of more detailed <br />memos and research papers, that are listed in the Bibliog- <br />raphy, section 8. Section 2 describes the SLW investigations, <br />section 3 covers precipitation investigations, section 4 dis- <br />cusses ice crystal studies and their implications, section 5 <br />considers airflow studies, section 6 describes specific instru- <br />mentation tests or intercomparisons, and section 7 contains <br />a summary and recommendations. <br /> <br />J <br /> <br />.. <br /> <br />" <br /> <br />4 <br />