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Correlating Simulated Surface Marks With Near-Surface Tornado Structure, Michael I. Zimmerman
Correlating Simulated Surface Marks With Near-Surface Tornado Structure, Michael I. Zimmerman
Graduate Theses, Dissertations, and Problem Reports
Tornadoes often leave behind patterns of debris deposition, or "surface marks", which provide a direct signature of their near surface winds. The intent of this thesis is to investigate what can be learned about near-surface tornado structure and intensity through the properties of surface marks generated by simulated, debris-laden tornadoes. Earlier work showed through numerical simulations that the tornado's structure and intensity is highly sensitive to properties of the near-surface flow and can change rapidly in time for some conditions. The strongest winds often occur within tens of meters of the surface where the threat to human life and property …
The Effect Of Ice Crystal Shape On Aircraft Contrails, Omar E. Meza Castillo
The Effect Of Ice Crystal Shape On Aircraft Contrails, Omar E. Meza Castillo
Graduate Theses, Dissertations, and Problem Reports
Aircraft contrails are a common phenomenon observed in the sky. They are formed mainly of water, from the ambient atmosphere and as a by-product of the combustion process, in the form of ice crystals. They have been identified as a potential contributor to global warming. Some contrails can be long-lived and create man-made cloud cover, thus possibly altering the radiative balance of the earth. There has been a great deal of research on various aspects of contrail development, but to date, little has been done on the influence of ice crystal shapes on the contrail evolution. In-situ studies have reported …