Index Catalog // ScholarsArchive@OSU

Analyzing large paleoclimate datasets : implications for past and future climate change

Creator:: Shakun, Jeremy D.
Abstract:: This dissertation presents the results of statistical analyses of large climate datasets from two time intervals – the 20th century instrumental record and the proxy record of the last deglaciation – in order to understand the forcings and mechanisms of past climate variability. A longstanding question in climate dynamics concerns...
Resource Type:: Dissertation
Full Text:: Acknowledgments J. D. S. is funded by the NSF Paleoclimate Program. We would like to thank D. Battisti and A

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
Full Text:: Monsoon δp is investigated by increasing the vegetation coverage in northern Africa during the MH

Coniferous forest biome :1975 to 1977 proposal : Volume 1

Creator:: U.S. International Biological Program. Coniferous Forest Biome
Abstract:: The Coniferous Forest Biome was initially funded in 1970 by the National Science Foundation as a large-scale, interdisciplinary, interinstitutional research program to study coniferous forest and associated aquatic ecosystems. It was initiated as one of the Integrated Research Programs in the Ecosystem Analysis Section of the U.S./International Biological Program (US/IBP)....
Resource Type:: Book
Full Text:: . INTRODUCTION The Coniferous Forest Biome was initially funded in 1970 by the National Science Foundation as a

Erosion by rivers and transport pathways in the ocean: A provenance tool using 40Ar--39Ar incremental heating on fine-grained sediment

Creator:: VanLaningham, Sam, Duncan, Robert A., and Pisias, Nicklas G.
Abstract:: We use Ar-40-Ar-39 incremental heating to fingerprint bulk fluvial sediment entering the northeast Pacific Ocean, with the long-term intent of tracking sediment source and transport changes from the terrestrial system to the marine environment through time. We show reproducible age spectra from individual rivers accounting for the majority of sediment...
Resource Type:: Article
Full Text:: McDougall and Harrison [1999]). 40Ar loss is evidenced by ever increasing ages in the low-temperature steps

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:: Ice Sheet Project (GISP2) ice core which is a proven paleoclimate archive. My thesis has the

ClarkPeterCEOASRegionalGlobalForcing.pdf

Creator:: Shakun, Jeremy D., Clark, Peter U., He, Feng, and et al.
Abstract:: The ongoing retreat of glaciers globally is one of the clearest manifestations of recent global warming associated with rising greenhouse gas concentrations. By comparison, the importance of greenhouse gases in driving glacier retreat during the most recent deglaciation, the last major interval of global warming, is unclear due to uncertainties...
Full Text:: Fellowship program. P.U.C. was supported by the US NSF Global Change Program (EAR 1304909). F.H. was

Dynamics of the Laurentide Ice Sheet

Creator:: Carlson, Anders Eskil
Abstract:: This dissertation concentrates on the controlling factors on the instability of the Laurentide Ice Sheet (LIS) and their effects on abrupt climate change. Northern Hemisphere climate fluctuated abruptly during the last deglaciation possibly related to variability in Atlantic meridional overturning circulation (AMOC) and reduced aerial extent of the LIS. Reductions...
Resource Type:: Dissertation
Full Text:: homogeneous till was deposited by lodgement with some subglacial deformation. The Sky Pilot Till is part

Opening Pandora's Box at the Roof of the World : The Past and Present of Avian Influenza Science

Creator:: Canavan, Barbara C.
Abstract:: By means of a case study and historical analysis, this dissertation examines the past and present of avian influenza. By integrating disconnected histories of human and animal influenza, this dissertation links historical insights with the concerns of contemporary avian flu science. It is not only a natural history of avian...
Resource Type:: Dissertation
Full Text:: Research, 2. 9 The most relevant aspect of the NSF definition for this dissertation is the

Physical-biological interactions in the Southern Ocean

Creator:: Moore, Jefferson Keith
Abstract:: Physical-biological interactions in the Southern Ocean were investigated using remote sensing data from several different satellite sensors. Satellite sea surface temperature data were used to study the dynamics of the Antarctic Polar Front (PF). Satellite ocean color data were used to estimate surface chlorophyll concentrations and their relation to various...
Resource Type:: Dissertation
Full Text:: production in the Southern Ocean is affected by climate change. It has recently been hypothesized that

The Southern Ocean at the last glacial maximum : a strong sink for atmospheric carbon dioxide

Creator:: Moore, J. Keith, Abbott, Mark R., Richman, James G., and Nelson, David M.
Abstract:: Analysis of satellite ocean color, sea surface temperature, and sea ice cover data reveals consistent patterns between biological production, iron availability, and physical forcings in the Southern Ocean. The consistency of these patterns, in conjunction with information on physical conditions during the last glacial maximum (LGM), enables estimates of export...
Resource Type:: Article
Full Text:: modern PF presented is from Moore et al. [1999a]. This mean path was determined by mapping the PF's

ScholarsArchive@OSU

Analyzing large paleoclimate datasets : implications for past and future climate change

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

Coniferous forest biome :1975 to 1977 proposal : Volume 1

Erosion by rivers and transport pathways in the ocean: A provenance tool using 40Ar--39Ar incremental heating on fine-grained sediment

The late holocene atmospheric methane budget reconstructed from ice cores

ClarkPeterCEOASRegionalGlobalForcing.pdf

Dynamics of the Laurentide Ice Sheet

Opening Pandora's Box at the Roof of the World : The Past and Present of Avian Influenza Science

Physical-biological interactions in the Southern Ocean

The Southern Ocean at the last glacial maximum : a strong sink for atmospheric carbon dioxide

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