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<br />Figure 32: Mean aloud top wind <br />speeds (meters/seaond) averaged <br />overall direations for seedable <br />ups lope episodes. <br /> <br />UPSLOPE' 'SEEDABLE' SITUATIONS <br /> <br /> <br />Moist La'yer Top <br />Wind Speed (meters/see) <br /> <br />The heights of cloud bases and tops vary from episode to <br /> <br />episode and from station to station, Therefore, these statistics <br /> <br />should be interpreted as average values of wind speed for each of the <br />stations at the average height of the cloud base or top. <br /> <br />5. CONCLUSION <br /> <br />A simple model for recognizing seeding opportunities has been <br /> <br />presented; its basis is a vertical profile of temperature and humidity. <br /> <br />A sample of the population of shallow upslope cloud systems in the <br />High Plains that met the seedability criteria specified in the model <br /> <br />was statistically analyzed. Characteristics of these cloud systems <br /> <br />and their distribution in space and time were determined from 10 years <br /> <br />35 <br />