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<br />Klimowski, B. A., and J. D. Marwitz, 1990: Single Doppler analyses of a severe squall line and gust front.
<br />Preprints, 16th Conference on Severe Local Stonns, Kananaskis Provincial Park, Alberta, Canada.
<br />October 22-26, 1990. American Meteorological Society, Boston, MA, 252-255.
<br />
<br />No abstract.
<br />
<br />Knapp, H. Y., A. Durgunoglu, and S. A. Changnon, 1988: Effects of added summer rainfall on the hydrologic
<br />cycle of Midwestern watersheds. Journal of Weather Modification, 20:67-74.
<br />
<br />The effects of added summer rainfall on agricultural areas in lllinois and the Midwest were investigated
<br />by using a quasi-distributed-parameter watershed model. Increases in summer' convective rainfall during
<br />July-August were simulated and used in the model to describe the changes in soil moisture, crop water
<br />use, shallow ground water, and streamflow conditions which could potentially result from precipitation
<br />augmentation practices. Two periods, representing very dry and very wet conditions, were used in the
<br />simulations with 10% to 25% precipitation increases. Results suggest that the greatest proportion of
<br />additional summer rainfall eventually percolates into ground water, and that less than 25% of the
<br />precipitation increase is used by the crops. Simulated increases in summer rainfall offer limited utility
<br />in reducing crop water stress because the rainfall events do not always coincide with the period of
<br />greatest crop water need. Methods, such as irrigation, which provide additional water at a specified
<br />time and amount can produce significant benefits to the plants.
<br />
<br />Knight, C. A., and L. J. Miller, 1990: First 5-cm radar echoes at low dBZ values in convective clouds.
<br />Preprints, Conference on Cloud Physics, San Francisco, CA, July 23-27, 1990. American
<br />Meteorological Society, Boston, MA, 716-721.
<br />
<br />No abstract.
<br />
<br />Kopp, F. J., and H. D. Orville, 1990: The use of a cloud model to predict convective and stratifonn clouds and
<br />precipitation. Preprints, 16th Conference on Severe Local Stonns, Kananaskis Provincial Park, Alberta,
<br />Canada, October 22-26, 1990. American Meteorological Society, Boston, MA, 322-327.
<br />
<br />No abstract.
<br />
<br />Kopp, F. J., H. D. Orville, J. A. Jung, and R. T. McNider, 1990: A parameterization ofradiation heating at the
<br />surface in a numerical cloud model. Preprints, Conference on Cloud Physics, San Francisco, CA,
<br />July 23-27, 1990. American Meteorological Society, Boston, MA, J81-J84.
<br />
<br />No abstract.
<br />
<br />Kopp, F. J., 1988: A preliminary numerical experiment in simulating the dispersion of SF6. Journal of Weather
<br />Modification, 20:75-81.
<br />
<br />A numerical simulation of an SF6 tracer experiment conducted on July 19, 1985, in North Dakota has
<br />been made. Both SF6 and AgI seeding are simulated in the model, although not concurrently. Only one
<br />seeding agent is simulated in a particular run of the model. The numerical experiments show that,the
<br />SF6 and AgI will disperse in a similar fashion initially but; as the AgI is activated inside the cloud, there
<br />will be some differences. The development of detectable ice and precipitation as a result of AgI seeding
<br />will likely diverge somewhat from the SF6 dispersion.
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