Index Catalog // ScholarsArchive@OSU

Nitrogen isotopes in a global ocean biogeochemical model : constraints on the coupling between denitrification and nitrogen fixation

Creator:: Somes, Christopher J.
Abstract:: We present a new nitrogen isotope model incorporated into the three-dimensional ocean component of a global Earth System Climate Model designed for millennial timescale simulations. The model includes prognostic tracers for the stable nitrogen isotopes, ¹⁴N and ¹⁵N, in the nitrate (NO₃ˉ), phytoplankton, zooplankton, and detritus variables of the marine...
Resource Type:: Masters Thesis
Full Text:: : Andreas Schmittner We present a new nitrogen isotope model incorporated into the three-dimensional

Multi-Centennial Response of ENSO Under Varying Atmospheric CO2

Creator:: Alder, Jay R.
Abstract:: The El Niño/Southern Oscillation (ENSO) affects millions of people via global teleconnections in the form of drought and torrential rainfall that impact agriculture and food production in many countries. Yet how ENSO will respond to a warming world is uncertain and a greatly debated topic. The Intergovernmental Panel on Climate...
Resource Type:: Capstone Project

Empowering the Experts: Design, Implementation, and Evaluation of a Climate Change Communication Workshop

Creator:: Vickery, Katrina
Abstract:: As climate change and its associated environmental and socioeconomic impacts become increasingly severe and imminent across the United States, it has become imperative for the public to be aware of and actively engaged with this issue. Although scientists generally perceive outreach in a positive light, a critical barrier that tends...
Resource Type:: Masters Thesis
Full Text:: collaborators and committee members, without whom, this project would not have been possible. To Dr. Andreas

Reynolds Stress Tensor Systems and Applications to Nonuniqueness of Weak Solutions to Fluid

Creator:: Donaghue, Patrick E.
Abstract:: In the 1954 John Nash [1] showed, through use of an iterative scheme of approximate embedding maps, that the sphere S² could be isometrically embedded into a ball of any radius by a C¹ map. In the 1980's M. Gromov [2] generalized Nash's work to the h-principal and convex integration....
Resource Type:: Masters Thesis

Numerical Study of Convexity Splitting Scheme for Coupled Phase Field and Stefan Free Boundary Problems

Creator:: Bigler, Lisa A.
Abstract:: In this work, we consider a convexity splitting scheme for a coupled phase field and energy equation, a modification of Stefan problem. The Stefan problem is a free boundary value problem that models the temperature in a homogeneous multiphase medium. Each phase is modeled using a heat diffusion parabolic partial...
Resource Type:: Masters Thesis

Valuing options in a discrete time regime switching model with jumps

Creator:: Chunikhina, Evgenia V.
Abstract:: In this work, we provide a detailed analysis of a discrete time regime switching financial market model with jumps. We consider the model under two different scenarios: known and unknown initial regime. For each scenario we investigated conditions that guarantee the model's completeness. We find that the model under consideration...
Resource Type:: Masters Thesis

The use of surface energy balance models as a means to quantify changes in glacier mass balance : an application to the Collier Glacier

Creator:: Beedlow, Andrew Cody
Abstract:: This thesis presents the results of an investigation into the measured and modeled mass balance of the Collier Glacier, a small (0.70 km²), valley glacier located in the Oregon Cascade Range (44° 10' N, 121° 47' W). Here we present mass-balance measurements conducted for the 2009 and 2010 balance years...
Resource Type:: Masters Thesis

Nonlinear solvers for a model problem of fluid flow in the subsurface

Creator:: Biederman, Shannon Miriah
Abstract:: Water is one of the most biologically and economically important substances on Earth. A significant portion of Earth's water subsists in the subsurface. Our ability to monitor the flow and transport of water and other fluids through this unseen environment is crucial for a myriad of reasons. One difficulty we...
Resource Type:: Masters Thesis

Impact of Dansgaard-Oeschger and Heinrich Events on the Latitudinal Distribution of Methane Sources during Marine Isotope Stage 3

Creator:: Edwards, Jon S.
Abstract:: Understanding how the latitudinal distribution of methane sources changed between stadial and interstadial climate states during the last glacial period can provide important clues about how terrestrial hydroclimate and ecosystems evolved between these different states. The punctuation of the millennial-scale structure by Heinrich events is also of interest in this...
Resource Type:: Masters Thesis
Full Text:: days. They will always be cherished. My committee, Andreas Schmittner, Alan Mix, and Peter Clark

ScholarsArchive@OSU

Nitrogen isotopes in a global ocean biogeochemical model : constraints on the coupling between denitrification and nitrogen fixation

Multi-Centennial Response of ENSO Under Varying Atmospheric CO2

Empowering the Experts: Design, Implementation, and Evaluation of a Climate Change Communication Workshop

Reynolds Stress Tensor Systems and Applications to Nonuniqueness of Weak Solutions to Fluid

Numerical Study of Convexity Splitting Scheme for Coupled Phase Field and Stefan Free Boundary Problems

Valuing options in a discrete time regime switching model with jumps

The use of surface energy balance models as a means to quantify changes in glacier mass balance : an application to the Collier Glacier

Nonlinear solvers for a model problem of fluid flow in the subsurface

Impact of Dansgaard-Oeschger and Heinrich Events on the Latitudinal Distribution of Methane Sources during Marine Isotope Stage 3

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