"Westerly Flow Cold Air Outbreak over Lake Michigan during Lake-ICE." Department of Atmospheric Sciences, University of Illinois , Champaign , (November 2002).
"Coherent Structures and Transitional Patterns in Convective Boundary Layers." 14th Symposium on Boundary Layers and Turbulence, Aspen , Colorado , (August 2000).
"Tornadoes." Gala Week Talk, Purdue, (April 1999).
"2-D or not 2-D: That is the Question." 13th Symposium on Boundary Layers and Turbulence, Dallas, Texas, (January 1999).
"Tornadoes," Indianapolis Chapter of the Purdue Alumni Club, Indianapolis, IN (May 1998)
"Mesoscale Cellular Convection over the Oceans." University of South Carolina, Columbia, South Carolina, (April 1998).
"Mesoscale Cellular Convection over the Oceans." University of Kentucky, Lexington, Kentucky, (February 1998).
"Large Eddy Simulation of Convective Marine Boundary Layers." Ninth Conference on Interaction of the Sea and Atmosphere, Phoenix, Arizona, (January 1998).
"Mesoscale Cellular Convection: From Observations to Models." University of Illinois, Champaign, IL (October 1997)
"Sensitivities in Turbulent Fields within LES of Convective PBLs." 12th Symposium on Boundary Layers and Turbulence, Amer. Meteor. Soc., Vancouver, British Columbia, Canada, (July 1997)
"Tornadoes," Optimist Club, West Lafayette, IN (October 1996)
"Tornadoes," Kiwanis Club, West Lafayette, IN (July 1996)
"Tornadoes," Wabash Area Lifetime Learning Association (WALLA), Lafayette, IN (March 1996)
"The Nuts and Bolts of Global Climate Change," Midwest Gas Association, Indianapolis, IN (May 1995)
"Large Eddy Simulation of Turbulent Flow in a Wintertime Marine Convective Boundary Layer." Fourth Conference on Polar Meteorology and Oceanography, Amer. Meteor. Soc., Dallas, TX. (January 1995)
Invited Participant, IBM Environmental Research Program Symposium, Washington, D.C. (September 1994)
"Tornadoes," Lafayette Rotary Club, Lafayette, IN (July 1994)
"Large Eddy Simulation Model Structures in Type I and Type II Cloud-Topped Boundary Layers," Ninth Conference on Atmospheric and Oceanic Waves and Stability, American Meteorological Society (May 1993)
Invited Participant, Congressional Forum on Oceans and the Atmosphere: Economic Security and Environmental Sustainability. Sponsored by Joint Oceanographic Institute and University Corporation for Atmospheric Research, Washington, D.C. (March 1993)
Invited Participant, University Colloquium on Environmental Research and Education. Sponsored by Sigma Xi, Raleigh, NC (September 1992)
"Turbulence Fields in a Wintertime Convectively-Mixed Boundary Layer over Lake Michigan," 35th Annual Conference on Great Lakes Research, Waterloo, Ontario, Canada (June 1992)