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Graduate Theses, Dissertations, and Problem Reports

Theses/Dissertations

Atmospheric sciences

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The Hydroclimatology Of West Virginia Spatial And Temporal Trends And Their Relationship With The North Atlantic Oscillation, Carson Wright Aug 2014

The Hydroclimatology Of West Virginia Spatial And Temporal Trends And Their Relationship With The North Atlantic Oscillation, Carson Wright

Graduate Theses, Dissertations, and Problem Reports

Global air temperature has risen 0.74°C over the last 100 years, and is one of several factors influencing climate and streamflow variability at global, regional, and local scales. The North Atlantic Oscillation (NAO) is another important factor contributing to climate variability by influencing the intensity of storms entering the eastern US. The Southeastern US is receiving less precipitation and streamflow is decreasing while the northeastern US is receiving greater amounts of precipitation and increasing streamflows. West Virginia is typically overlooked being on the border of both of these regions; therefore the objective of this study is to fill knowledge gaps …


Development Of Soil Lead And Tree-Ring Methods For Characterizing Atmospheric Deposition Gradients And Subsequent Tree Growth Responses, Bradley P. Breslow Dec 2011

Development Of Soil Lead And Tree-Ring Methods For Characterizing Atmospheric Deposition Gradients And Subsequent Tree Growth Responses, Bradley P. Breslow

Graduate Theses, Dissertations, and Problem Reports

Atmospheric deposition of pollutants and nutrients can have a range of effects on aquatic and terrestrial ecosystems. Despite its ecological importance, it remains a challenge to model patterns of deposition across complex terrain and also to assess how forest ecosystems are reacting to chronic inputs of atmospheric deposition. I measured the lead (Pb) content of forest soils adjacent to atmospheric deposition monitoring stations throughout the central Appalachian Mountains to examine how well patterns of soil Pb relate to regional patterns of inorganic nitrogen (N) deposition. While I found no significant relationship between organic soil Pb content and N deposition, I …


Correlating Simulated Surface Marks With Near-Surface Tornado Structure, Michael I. Zimmerman Dec 2010

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 May 2010

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 …