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<br />I <br /> <br />I <br /> <br />4. Professional Activities <br /> <br />I <br /> <br />Harry served his primary professional society, <br />the American Meteorological Society, in various <br />capacities. He was an AMS councilor and member of <br />the Executive Committee from 1983-1986, and served <br />as the Scientific and Technical Activities Commissioner <br />from 1989-1996. In addition, he chaired the AMS <br />Committee on Weather Modification on two different <br />occasions and also served on the Committees on Cloud <br />Physics and on Severe Local Storms. He was an editor <br />of the Journal of Atmospheric Sciences from 1978- <br />1985. The contributions of Carol Hirsch as his Editorial <br />Assistant,. as well as in so many other ways, deserve <br />mention here. His essay on the history of cloud physics <br />and dynamics appears in the American Meteorological <br />Society's diamond anniversary history volume edited <br />by James Fleming. <br /> <br />I <br />I <br /> <br />I <br />I <br /> <br />I <br />I <br /> <br />Harry lectured by invitation at the British <br />Meteorological Office during the summer of 1969. He <br />was a member of the International Commission on <br />Cloud Physics from 1971 to 1980. He spent the <br />academic year 1972-73 working with the NOAA Office <br />of Environmental Modification, dealing with their <br />weather modification programs, and a 1982 sabbatical <br />working in the Weather Modification Office at the <br />World Meteorological Organization headquarters in <br />Geneva. He later chaired the WMO Executive Council <br />Panel of Experts/Committee on Atmospheric Sciences <br />Working Group on the Physics and Chemistry of <br />Clouds and Weather Modification Research from 1991- <br />1997. He chaired the organizing committees for WMO <br />scientific conferences on weather modification in Italy <br />(1994) and Thailand (1999), and was instrumental in <br />initiating the series of International Cloud Modeling <br />Workshops conducted under WMO auspices. He was a <br />member of the National Science Foundation Advisory <br />Committee for Atmospheric Sciences, and served on <br />several other NSF, National Research Council, National <br />Center for Atmospheric Research, and University <br />Corporation for Atmospheric. Research panels. He <br />continues to serve on the Editorial Board of the journal <br />Atmospheric Research. <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br />I <br />I <br /> <br />5. Honors and Awards <br /> <br />I <br /> <br />Dr. Orville is a Fellow of the American <br />Meteorological Society and the American Association <br />for the Advancement of Science. He is a member of the <br />American Geophysical Union, the Weather <br />Modification Association, and Sigma Xi. He received <br />the Charles Franklin Brooks A ward for Outstanding <br />Services to the Society from the AMS for 1995. His <br />father had received the same award (posthumously) in <br />1961, and his brother Dick received it in 1994 - truly a <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />unique family record! Harry also received the 1991 <br />Thunderbird Award and 2000 International Award from <br />the Weather Modification Association for his <br />contributions to weather modification. <br /> <br />6. Summary <br /> <br />Dr. Orville has had a long and distinguished career <br />in the scientific fields of cloud physics and weather <br />modification, and in the education of graduate students <br />in the atmospheric sciences at the South Dakota School <br />of Mines and Technology. Along with his colleagues <br />and students, he has laid the groundwork for continued <br />growth of the application of numerical cloud modeling <br />to weather modification and other areas of cloud <br />physics. Few scientists fully appreciate that ultimately <br />the most definitive cloud seeding "experiments" will be <br />carried out via such models - that being the only way <br />one can with certainty ascribe changes in the clouds <br />(that is, differences between the seeded and unseeded <br />versions of the same simulation) to the effects of the <br />simulated seeding. Of course, improvements over <br />today's versions will be needed in the models to make <br />such "experiments" fully credible, but one can be <br />confident that such improvements will continue to <br />occur. Whether the goal will be achieved in our <br />lifetime, or that of our children or grandchildren, awaits <br />the course of history. But Dr. Orville and his <br />colleagues and students have certainly set the course in <br />motion. <br /> <br />Acknowledgment: It has been a pleasure and a <br />stimulating experience to work alongside Harry Orville <br />(who provided much of the information herein) for <br />most of those forty years. <br /> <br />Paul L. Smith <br />Professor Emeritus <br />Institute of Atmospheric Sciences <br /> <br />3 <br />