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<br />9 <br /> <br />V. INTERPRETATIVE ANALYSES <br /> <br />"" <br /> <br />A. Scope of Present Interpretative Analysis <br /> <br />The full Utah analysis plan provides for integrated analyses of <br /> <br />the spatial and temporal distribution of liquid water based on remote <br /> <br />radiometric liquid water observations, cloud physics aircraft FSSP <br /> <br />and JW liquid water content observations, and mountaintop liquid <br /> <br />water measurements. These measurements when combined with the <br /> <br />radar reflectivity observations (primarily ice particles), vapor ehanne1 <br /> <br />radiometric observations, and rawinsonde observations can be used to <br /> <br />perform calculations of cloud water budgets for each of the respective water <br /> <br />phases: vapor, liquid, and ice. The basic data for such calculations were <br /> <br />obtained for a limited number of episodes .of Tushar Mountain cloud systems. This <br /> <br />section of this report presents analyses of the distribution and character- <br /> <br />istics of clouds and cloud liquid water based on aircraft, radar, rawinsonde, <br /> <br />and surface data collected during two storm events that occurred in February <br /> <br />1983. Integration of these analyses with future analyses of cloud liquid water <br /> <br />from the radiometer and 1idar, with aircraft ice crystal observations, and with <br /> <br />model simulations should provide a reliable picture of the formation and growth <br /> <br />of cloud particles and the efficiency of precipitation or evaporation of cloud <br /> <br />condensate for these storm periods. This integration of observations will be <br /> <br />undertaken following the completion of the planned radiometer analyses and <br /> <br />radiosonde based model calculations during the 1983-84 analysis period. <br /> <br />B. Storm Systems Covered by the Present Analyses <br /> <br /> <br />Before presenting the initial case studies for the two storms, it is important <br /> <br />to consider the two events in perspective of the types of storms that <br /> <br /> <br />affect the Tushar Mountains and in terms of their wl~ather modification <br /> <br />potential. North American Weather Consultants, as part of this ongoing <br /> <br />analysis, has defined and documented, using the C-band radar, five precipi- <br /> <br />tation echo types (PETS) for the Tushar Mountains. These include (1) area-wide <br /> <br />~ <br /> <br />.. <br />