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<br />energy of cloud growth and precipitation. This study examines the <br />following questions: <br /> <br />a. What are the temporal and spatial effects of lifting on the <br />observed vertical profiles of stability and moisture on the meso- <br />scale? <br /> <br />b. How are these changes related to the mesoscale kinematic <br />fields? <br /> <br />c. How do these changes in stability and moisture affect the <br />available buoyant energy and convective cloud growth and rainfall? <br /> <br />d. Are these temporal and spatial variations correlated with <br />radar and rain gage estimates of precipitation? <br /> <br />e. What is the degree of spatial and temporal continuity within <br />small mesoscale systems? <br /> <br />f. Can a simple model simulate the net observed effects of <br />lifting in convective systems? <br /> <br />1.4 Historical Context <br /> <br />1.4.1 Observational Studies <br /> <br />Although much of our current understanding of convective cloud <br />development and thunderstorm life-cycles was obtained in the Thunder- <br />storm Project (Byers and Braham, 1949), several observational prob- <br />lems arose in that early experiment that remain largely unresolved. <br />Initial triggering mechanisms and internal storm dynamics were the <br />most difficult to measure. Our understanding of storm circulations <br />9 <br />