Index Catalog // ScholarsArchive@OSU

The Ocean Circulation and Carbon Cycle during the Last Glacial Maximum

Creator:: Muglia, Juan
Abstract:: During the Last Glacial Maximum (LGM, ∼ 21 ky before present) the atmospheric CO2 concentration was about 100 ppm lower than its pre-industrial (PI)value. The missing carbon from the atmosphere must have been stored in thedeep ocean during this period, but the mechanisms driving such re-distribution ofthe carbon cycle are...
Resource Type:: Dissertation
Full Text:: Circulation and Carbon Cycle during the Last Glacial Maximum Abstract approved: Andreas Schmittner During

Take me out to (analyze) the ballgame : visualization and analysis techniques for big spatial data

Creator:: Comiskey, Chris
Abstract:: For spatial data visualization, we approach two problems and provide solutions: heat map resolution selection, and heat map confidence interval presentation. Analysts often present spatial data in gridded heat maps, at some chosen resolution. However, many data types vary in density across the domain. We develop variable-resolution heat maps to...
Resource Type:: Dissertation

Abrupt deglacial climate changes in the North Pacific and implications for climate tipping points

Creator:: Praetorius, Summer Kate
Abstract:: Paleoclimate archives have revealed abrupt climate events that are superimposed on more gradual climate changes throughout the last glacial and deglacial periods. The underlying causes of such rapid climate changes are still poorly understood, but the strong expression of these events in northern hemisphere records likely points to climatic mechanisms...
Resource Type:: Dissertation
Full Text:: Prahl, Andy Ross, Andreas Schmittner, Jeremy Shakun, John Southon, Joseph Stoner, Matt Wolhowe, and

Paleoclimate, paleoventilation, and paleomagnetism as recorded in a 17kyr marine sediment record from the SE Alaska margin

Creator:: Davies, Maureen Helen
Abstract:: The deglacial behavior of the sub-Arctic North Pacific is poorly constrained, with many published records suffering from limited age control due to extensive post- depositional biogenic carbonate dissolution. Potential alternative dating methods could include the correlation of stable-isotopic and/or paleomagnetic secular variation records to an independently-dated regional template, however no...
Resource Type:: Dissertation
Full Text:: thoughtful input and oversight of my committee members: Andreas Schmittner, Nick Pisias, Ed Brook, and

Simulating past, present, and future changes in ENSO : a model evaluation and data-model comparison

Creator:: Alder, Jay R.
Abstract:: This thesis presents the results of a formal evaluation of a new AOGCM, GENMOM, demonstrating its ability to simulate present-day climate and ENSO dynamics. The model is applied to simulate climate for the Last Glacial Maximum, deglacial, and Holocene time periods. The model output is evaluated against the best available...
Resource Type:: Dissertation
Full Text:: Jones for constantly reinforcing that climate modeling is geography. To Andreas Schmittner for being

Investigating climate feedbacks across forcing magnitudes and time scales using the radiative kernel technique

Creator:: Jonko, Alexandra
Abstract:: Radiative feedbacks associated with changes in water vapor, temperature, surface albedo and clouds remain a major source of uncertainty in our understanding of climate's response to anthropogenic forcing. In this dissertation climate model data is used to investigate variations in feedbacks that result from changing CO₂ forcing and the time...
Resource Type:: Dissertation
Full Text:: present: Eric Skyllingstad, Andreas Schmittner, Jim Coakley, James Liburdy, Dudley Chelton and Jeffrey

Carbon cycle variability during the last millennium and last deglaciation

Creator:: Bauska, Thomas K.
Abstract:: The exchange of carbon on earth is one of the fundamental processes that sustains life and regulates climate. Since the onset of the Industrial Revolution, the burning of fossil fuels and anthropogenic land conversion have altered the carbon cycle, increasing carbon dioxide in the atmosphere to levels that are unprecedented...
Resource Type:: Dissertation
Full Text:: . Andreas Schmittner and Peter Clark have fostered my development in the classroom and their service on my

Single-Molecule Characterization of the Stepping Mechanism of the Orphan Kinesin PAKRP2

Creator:: Gicking, Allison M.
Abstract:: The phragmoplast associated kinesin, PAKRP2, from the model organism Arabidopsis thaliana is categorized as an orphan, or ungrouped, kinesin due to structural divergences from the established 14 kinesin families. An early study on PAKRP2 found that it localized to the phragmoplast mid zone during the late stages of cell division...
Resource Type:: Dissertation
Full Text:: committee members – Ethan Minot, David Hendrix, Bo Sun and Andreas Schmittner – for giving me time out of

The late holocene atmospheric methane budget reconstructed from ice cores

Creator:: Mitchell, Logan E.
Abstract:: Ice cores are considered the gold standard for recording past climate and biogeochemical changes. However, gas records derived from ice core analysis have until now been largely limited to centennial and longer timescales because sufficient temporal resolution and analytical precision have been lacking, except during rare times when atmospheric concentrations...
Resource Type:: Dissertation
Full Text:: . Andreas, even though I didn’t take your modeling class, I still learned a bunch from that class through

Exploring the Relationships Between Stable Water Isotope Ratios and Large Scale Atmospheric Circulation in Paleoclimate Settings Using an Isotope-Enabled General Circulation Model

Creator:: Niezgoda, Kyle
Abstract:: Climate model simulations and paleoclimate proxies are two tools that enable an understanding of the climate history of the Earth. When utilized together, they form a powerful paradigm for understanding past changes. Proxies are the only physical link to the past conditions on Earth, and models “fill in the gaps”...
Resource Type:: Dissertation

ScholarsArchive@OSU

The Ocean Circulation and Carbon Cycle during the Last Glacial Maximum

Take me out to (analyze) the ballgame : visualization and analysis techniques for big spatial data

Abrupt deglacial climate changes in the North Pacific and implications for climate tipping points

Paleoclimate, paleoventilation, and paleomagnetism as recorded in a 17kyr marine sediment record from the SE Alaska margin

Simulating past, present, and future changes in ENSO : a model evaluation and data-model comparison

Investigating climate feedbacks across forcing magnitudes and time scales using the radiative kernel technique

Carbon cycle variability during the last millennium and last deglaciation

Single-Molecule Characterization of the Stepping Mechanism of the Orphan Kinesin PAKRP2

The late holocene atmospheric methane budget reconstructed from ice cores

Exploring the Relationships Between Stable Water Isotope Ratios and Large Scale Atmospheric Circulation in Paleoclimate Settings Using an Isotope-Enabled General Circulation Model

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