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Defenses Spring 2012

Fall 2011 | Fall 2012

Global Omega Equation: Derivation and Application to Tropical Cyclogenesis in the North Atlantic Ocean

Jack Dostalek
June 25, 2012

The quasi-geostrophic (QG) omega equation is a tool which has been available to meteorologists for decades, but its use restricted to the midlatitudes due to the problems with the geostrophic balance at low latitudes. An omega equation ...

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The Effects of Environmental Flow on the Internal Dynamics of Tropical Cyclones

Gabriel Williams
May 25, 2012

This dissertation focuses on two projects that examine the interaction between the internal dynamics of tropical cyclones and the large-scale environmental flow using a hierarchy of numerical model simulations.

For the first project, ...

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Simple Analytical Solutions For Potential Vorticity Intrusions

Matt Masarik
May 9, 2012

Using potential temperature (theta) as the vertical coordinate, we derive analytical solutions of the potential vorticity (PV) invertibility principle for the case in which the flow is y-independent and an isolated PV anomaly is confined...

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Microphysical and Macrophysical Responses of Marine Stratocumulus Polluted by Underlying Ships

Matt Christensen
May 1, 2012

Ship tracks serve as a distinct manifestation of the radiative response due to the interaction of aerosols and clouds. Exhaust plumes from underlying ships strongly influence cloud microphysics (effective radius) and, to a largely undete...

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Analysis of the Diurnal Cycle in Taiwan During the Terrain-influenced Monsoon Rainfall Experiment

James Ruppert
March 21, 2012

The diurnal cycle is investigated in Taiwan during the summer monsoon (“Mei-yu” or plum rain) season using enhanced observations from the 2008 Terrain-influenced Monsoon Rainfall Experiment (TiMREX). The diurnal cycle of an u...

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A Triple-Moment Bulk Hail Microphysics Scheme to Investigate the Sensitivities of Hail to Aerosols

Adrian Loftus
March 7, 2012

Hail is a frequent occurrence in warm season deep convection in many mid-latitude regions and causes significant damage to property and agricultural interests every year. Hail can also have a substantial impact on the precipitation chara...

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Regional Analysis of West African Convective Systems and Characteristics

Nick Guy
February 27, 2012

Recent studies of the West African monsoon have resulted in the need for an improved understanding of mesoscale variability to fully appreciate this complex system. Analysis of mesoscale precipitating system properties can lead to a bet...

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The Radiative and Hydrological Effects of a Local Switch from Maize to Miscanthus

Gavin Roy
February 26, 2012

Miscanthus (Miscanthus giganteus), a lush, dense grass that grows to be 3-4 meters tall, has been proven to be a substantially more productive biofuel crop than maize (Zea mays) due to its higher biomass output per unit are...

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A Statistical Prediction Model for East Pacific and Atlantic Tropical Cyclone Genesis

Stephanie Slade
February 22, 2012

A statistical model is developed via multiple logistic regression for the prediction of weekly tropical cyclone activity over the East Pacific and Atlantic Ocean regions using data from 1975 to 2009. The predictors used in the model inc...

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Remote Versus Local Controls of East Pacific Intraseasonal Variability

Adam Rydbeck
February 14, 2012

The Madden-Julian Oscillation (MJO) is the dominant mode of tropical intraseasonal variability and propagates eastward at 5 m/s with primary signals in wind and precipitation. During boreal summer, interactions between intraseasonal vari...

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