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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />C. RAWINSONDE OBSERVATIONS AND EQUIPMENT MAINTENANCE <br />This season two CLASS (Cross-chain Loran Atmospheric Sounding System) rawin- <br />sonde systems provi ded by NCAR wi 11 be operated by contractor personnel at <br />Sheridan and Kingvale, California. NCAR will provide all expendable rawin- <br />sonde supplies. NCAR will also be responsible for maintaining the systems. A <br />contractor wi 11 provi de operators for the proj ect rawi nsondes at all times <br />during the operational field season. A rawinsonde operations coordinator will <br />be provided by the contractor. <br /> <br />1. Rawinsonde Release Schedule <br />The rawinsonde network will be operational from November 3, 1986 to January 9, <br />1987, (refer back to figure 1-1 for location of the network). A I-week shake- <br />down period will be initiated beginning October 20, 1986. During the inten- <br />sive field season rawinsonde releases at Sheridan and Kingvale will be made <br />approximately 6 hours prior to any forecast storm-arrival time, with 3-hourly <br />soundings, 24 hours per day made during all storm episodes. Some modification <br />of this schedule is possible based on the time of aircraft launches. All <br />rawinsondes will be tracked to the 100 mb level. Up to 30 additional rawin- <br />sonde releases per site may be made during special periods of interest. These <br />releases should not interfere with the regular 3-hourly schedule. Surface <br />observations will be taken and recorded for each rawinsonde launch. <br /> <br />2. Rawinsonde Maintenance <br />Because the SCPP systems are being obtained from NCAR, NCAR wi 11 provide a <br />qualified engineer to perform system maintenance, calibration, and operational <br />training for personnel prior to the 1986-87 field season. <br /> <br />II 1-13 <br />