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<br />. <br /> <br />. <br /> <br />e <br /> <br />CHAI?I'ER I I I <br /> <br />. <br /> <br />DATA ACQUISITION <br /> <br />3.1 GENERAL BJ\CKGROONI) OF THE OCPP EXPER1MElfi'AL ARFA <br /> <br />. <br /> <br />.e <br /> <br />The SCPP research area is shown in Fig. 3.1. The contours <br /> <br />500 - 2500 m southwest of Lake Tahoe const i tute the A:nerican Ri ver <br /> <br /> <br />Basin. The slope of the western range is "'3%. The barrier is <br /> <br /> <br />or iented in a north-northwest to south-southeast direction. <br /> <br />Fig. 3.2 illustrates the orientation of the barrier and the <br /> <br /> <br />coordinate axes used in this study. The mean barrier height <br /> <br /> <br />decreases along the barrier fran south to north. In the south it <br /> <br /> <br />averages near 3960 m (13,000 ft) above mean sea level (MSL); <br /> <br />whereas in the north it decreases to approximately 1830-2130 m <br /> <br />(6000-7000 ft) above MSL. <br /> <br />. <br /> <br />-e <br /> <br />. <br /> <br />3.2 AIRCRAFT HFASUREMENrS <br /> <br />e <br /> <br />The University of Wyaning Super King Air is a twin engine <br /> <br /> <br />turboprop instrumented for measuranents of cloud microphysical and <br /> <br />kinematic variables in this project. Appendix (A) lists the <br /> <br />instruments on the Kinq Air. Most data were stored on magnetic <br /> <br />tape. Ice crystals were collected and preserved in silicone oil <br /> <br />. <br /> <br />. <br /> <br />. <br />