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<br />1 <br /> <br />1. INTRODUCTION <br /> <br />~'!I <br /> <br />A. Background <br /> <br />During the winter seasons of 1976-77 and 1977-78, CSU (under <br /> <br />'" <br />. <br /> <br />Contract 6-07-DR-20020) collected digital imagery from the SMS-2 geo- <br /> <br />stationary satellite for analysis in support of the Sierra Cooperative <br /> <br />Pilot Project (SCPP) being conducted by the U.S. Bureau of Reclamation. <br /> <br />The intent of this project was to study in detail the application of <br /> <br />digital geosynchronous satellite imagery to the SCPP. An earlier report <br /> <br />(Reynolds, 1977) contained preliminary results for the 1976-77 field <br /> <br />program. This current report includes final results for the 1976-77 <br /> <br />period plus results from the 1977-78 field program. The target area <br /> <br />over which these studies have been carried out is shown in Fig. 1. <br /> <br />-~ <br /> <br />This area will be referred to throughout this report when discussing <br /> <br />the results of this study. <br /> <br />....' <br /> <br />B. Scientific Objectives <br /> <br />Certain specific tasks were set forth in the initially proposed <br /> <br />satellite studies. These tasks were sometimes expanded upon or modified <br /> <br />or deleted depending upon data availability and changing needs of the <br /> <br />SCPP. A list of the major studies undertaken in this report are: <br /> <br />1) To determine the ability of geosynchronous digital satellite <br /> <br />data to quantitatively measure cloud top temperatures (CTT) over the <br /> <br />Sierra Nevada and SCPP target area. This includes determining percentage <br /> <br />of time upper-level detached cirrus may interfere with observations. <br /> <br />Using all available "cloud" truth data (Le. aircraft, raobs, radar) <br /> <br />the accuracy to which these CTT's can be measured from satellites will <br /> <br />, <br /> <br />be determined. <br />