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<br />~. <br />~ ~ <br /> <br />~ <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />2,2 <br /> <br />the guidelines described in the sCPP 1986-87 Operations-Plan and in- <br />cludes the mandatory l8-hour downtime before continued operations. <br />The radar data will provide background information for assessing the <br />effects of area wide ground-based seeding, <br /> <br />The radar will be prepared for the field season during the month <br />of October 1986, The radar is installed in a camper shell mounted on <br />a Dodge 4x4 pickup truck, The camper roof has recently been completely <br />renovated and reinforced so we do not anticipate problems with water <br />leakage this season, The video system has been modified to correct <br />the video noise problem, The R/T unit will be checked and calibrated <br />and a new magnetron and matched receiver crystals will be installed, <br /> <br />Data processing will progress in parallel with field operations <br />to minimize the time delay in making the data available for general <br />use, Data acquisition and recording are controlled by an Apple 11+ <br />computer, Raw data are saved on magnetic tape (9T, 1600 bpi), After <br />each experimental period the magnetic tapes will be taken to DR1 where <br />they will be transferred (after a quality control check) to an archive <br />format which includes valid calibration data. The real-time, high- <br />resolution, range-corrected color display is recorded on video tape <br />and this is available for post-storm perusal, Data reduction and <br />display software is now well established for the radar. The software <br />is available on the DR1 VAX 11/780 and produces tabulated and graphic <br />displays of the data (see Figures 1 and 2), <br /> <br />The analysis will examine the Ka-band radar data alone and in <br />conjunction with data from other instrumentation, The analysis of <br />the radar data alone will focus on time-height displays of equivalent <br />reflectivity factor, The radar collects these data in the zenith <br />direction and they can reveal much about a winter storm. The cloud <br />top altitude and the cloud top temperature will be two variables <br />