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Theses/Dissertations from 2019

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The effects of amphibolite facies metamorphism on the trace element composition of pyrite and pyrrhotite in the Cambrian Nairne Pyrite Member, Kanmantoo Group, South Australia, Calvin Dakota Conn

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Comparison of cloud systems simulated with two-dimensional and three-dimensional cloud resolving models, Justin Andrew Covert

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Application of the USGS soil-water-balance (SWB) model to estimate spatial and temporal aspects of groundwater recharge in north-central Iowa, Erik Stephen Day

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Creating probabilistic streamflow forecasts using HRRRE & HREF probabilistic quantitative precipitation forecasts, Andrew Goenner

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Comparing the effect of cooperative exams on student learning between an interactive lecture and a student-centered class, Theresa Ann Halligan

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Arctic sedimentation on interannual and million year time scales: Laminations and ice rafted debris, Thomas Austin Harbour

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Insights into early Earth ocean biogeochemistry from intensive monitoring of two ferruginous meromictic lakes, Nicholas Lambrecht

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Quantitative diatom-based proxy for sea ice extent in the Bering and Chukchi seas, Anna Nesterovich

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A 50 kyr rainfall record derived from Colombian stalagmites: Insights on intertropical convergence zone dynamics and the role of ocean circulation., Juan Carlos Romero Romero Gelvez

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On the climatology and dynamics of heavy rainfall events and the winter low level jet in and near Saudi Arabia, Ahmad Emad Samman

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Sensitivity of sub-daily extreme winter precipitation to model resolution, Jacob Randall Spender

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Strain patterns in the Møns Klint and Rubjerg Knude glaciotectonic complexes, Denmark, inferred from anisotropy of magnetic susceptibility, Matthew Warbritton

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An integrated framework for quantifying scale-dependent groundwater flow and solute transport in fractured till using field data and numerical modeling, Nathan Lee Young

Theses/Dissertations from 2018

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Refinement and utilization of the marine climate proxy Arctica islandica: An ideal replication strategy for stable isotope studies and an investigation into the shell growth and hydrographic variability of Georges Bank (Northwestern Atlantic), Jared Daniel Brenzink Ballew

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Understanding diurnal cycle mode intensification and its effect on interannual and interdecadal warm season precipitation trends over the U.S. Corn Belt, Amanda Black

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Improving convective mode and streamflow forecasts through the use of convection-allowing ensembles, Bradley Carlberg

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A changing arctic atmospheric circulation in response to global change, and its influence on future extreme weather and convective potential, Brandon Joshua Fisel

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Explaining the difference in freeze-thaw resistance of two similar “high-quality” limestone aggregates, Evelyn Hussey

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Experimental analysis of the effect of grain size distribution on stick-slip and creep behavior, Jeremy Randolph-Flagg

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Quantification of urban heat island impacts on the cooling energy consumption in residential and commercial buildings in the Continental United States, Saad Bin Tarik

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Ferromagnesian silicates and oxides as vectors to metamorphosed sediment-hosted Pb-Zn-Ag-(Cu-Au) deposits in the Cambrian Kanmantoo Group, South Australia, Katherine Tott

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Can model errors in atmospheric variables within the low-level inflow region of mesoscale convective systems be used to anticipate displacement errors in initiation location?, Nicholas Vertz

Theses/Dissertations from 2017

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Tools and metrics to characterize extreme climate events and evaluate climatic datasets over the Upper Colorado River Basin for societal applications, Abayomi Abiodun Abatan

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Application of a satellite-derived potential evapotranspiration product for operational streamflow prediction, Angela Loraine Bowman

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A Comparison of Conventional Annual and Alternative Perennial Cropping Systems Under Contemporary and Future Precipitation Scenarios in the US Prairie Pothole Region, Patrick Michael Edmonds

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A study of the inter-annual variation of the onset of the North American Monsoon, Sarah Lynn Fingerle

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3D printing porous proxies as a new tool for laboratory and numerical analyses of sedimentary rocks, Sergey Ishutov

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The origin of the sediment-hosted Kanmantoo Cu-Au deposit, South Australia: Mineralogical considerations, Meaghan Victoria MacPherson

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Evaluation of a distributed streamflow forecast model at multiple watershed scales, Tyler J. Madsen

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Arctica islandica shell growth and geochemical records from northern Norway as North Atlantic marine climate proxies for the last millennium, Madelyn Mette

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Hydrogeological and Geochemical Investigation of Recharge (Leakage) through Till Aquitards to Buried-Valley Aquifers in Central and Northeastern Minnesota, Alyssa Witt

Theses/Dissertations from 2016

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Understanding the geological basis of the Iowa Pore Index, Muhammad Firdaus Ahmad Ridzuan

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Analysis of mesoscale convective system initiations in the United States Corn Belt in the warm season of the years 1979 to 2013, Elisabeth Callen

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The formation of a rectilinear ridge network, Múlajökull, Iceland, Geoffrey Thomas Gadd

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Magnetic mineralogy and fabrics of small-scale glacial flutes, Múlajökull and Breiðamerkurjökull, Iceland, Libby Rosa Woodford Ives

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Improvement of numerical wind forecasts at wind turbine height for wind ramp events within the stable boundary layer, David E. Jahn

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Evaluation of regional, very heavy precipitation events in the upper Mississippi region using climate model ensembles, Sho Kawazoe

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Butterflies and bow echoes: addressing poor forecasts with ensemble simulations, John Lawson

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Major and trace element chemistry of zincian spinels as an exploration guide for metamorphosed massive sulfide deposits, Joshua Joseph O'Brien

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Pristine nocturnal convective initiation: a climatology and preliminary examination of predictability, Sean Andrew Stelten

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Evolution and characteristics of Madden-Julian Oscillation convection and clouds during DYNAMO, Cora Lynn Virgei

Theses/Dissertations from 2015

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Geological, mineralogical, and geochemical studies of the Paleoproterozoic base metal Stollberg ore field, Bergslagen, Sweden, Katherine Suzanne Frank

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Culturing benthic foraminifera to understand the effects of changing seawater chemistry and temperature on foraminiferal shell chemistry, Deserae Jennings

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Assessment of a balloon-borne buoy based measurement system with co-located tower and lidar measurements, Gregory Thrasher Matson

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Physical characteristics of drumlins, with implications for their formation, at an active drumlin field, Múlajökull, Iceland, Reba McCracken

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Developing a decadal-scale stalagmite record of hydroclimate and atmospheric variability for western Iberia (Portugal) during the Late Holocene, Diana Lynn Thatcher

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Marine Isotope Stage (MIS) 5 on the Umnak Plateau, Bering Sea (IODP Site U1339): diatom taxonomy, grain size and isotopic composition of marine sediments as proxies for primary productivity and sea ice extent, Derrick Ray Vaughn

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Strong wind shear events and improved numerical prediction of the wind turbine rotor layer in an Iowa tall tower network, Renee Amber Walton

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A comparison of QPF from WRF simulations with operational NAM and GFS output using multiple verification methods, Haifan Yan

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Natural fracture systems in Mowry Shale outcrops, Bighorn Basin, Wyoming, Ning Zhang

Theses/Dissertations from 2014

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An investigation of summer season cold fronts unassociated with an outflow boundary, Amanda Suzanne Black

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Assessing the style of advance and retreat of the Des Moines Lobe using LiDAR topographic data, Sarah Elizabeth Day

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Stable tellurium isotope variability in ore-forming systems: A theoretical and experimental approach, Andrew Fornadel

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Analysis of surface wind speed distributions: A look into NARCCAP models and ASOS data throughout the Contiguous United States, Rachel Hatteberg

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Limitations on the study of tile drainage using a distributed parameter hydrologic model and stable isotopes, Alexander Kevin Morrison

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The impact of radar data assimilation on warm season rainfall forecasts for use in hydrologic models: examples from extreme rain events in Iowa, Ben Moser

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WRF forecast skill of the Great Plains low level jet and its correlation to forecast skill of mesoscale convective system precipitation, Brian Joseph Squitieri

Theses/Dissertations from 2013

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Assimilation of AMSR-E snow water equivalent data in a lumped hydrological model, David Dziubanski

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Late summer Iowa rainfall events in weakly forced environments, Michael Edward Greve

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Further evaluation of improving probabilistic precipitation forecasts through the QPF-POP neighborhood relationship, Michael Charles Kochasic

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Assessment of a General Circulation Model with Modified Convection and Clouds, Zachary Alan Mangin

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Ramifications of spurious precipitation on MCSs modeled in the WRF, Timothy Edward Marquis

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Development of a future typical meteorological year with application to building energy use, Shannon Patton

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CWEX (Crop/Wind-Energy Experiment): Measurements of the interaction between crop agriculture and wind power, Daniel Andrew Rajewski

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Satellite-derived potential evapotranspiration for distributed hydrologic runoff modeling in Midwestern basins, Ryan Randall Spies

Theses/Dissertations from 2012

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Arctic daily temperature and precipitation extremes: Observed and simulated physical behavior, Justin Michael Glisan

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Applying dendrochronology visual crossdating techniques to the marine bivalve Arctica islandica and assessing the utility of master growth chronologies as proxies for temperature and secondary productivity in the Gulf of Maine, Shelly Mae Griffin

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Observations and Laboratory Simulations of Tornadoes in Complex Topographical Regions, Christopher D. Karstens

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A high-resolution geochemical proxy record of ∆14C and d18O in the Gulf of Maine using Arctica islandica shell carbonate, Erin Elizabeth Lower

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Assessing understanding of the nature of science and science self-efficacy in undergraduates involved in research in an introductory geology course, Elizabeth L. Moss

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An experimental study of ice-bed separation during glacial sliding, Benjamin Brett Petersen

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Prediction of convective morphology in near-cloud permitting WRF model simulations, Darren Victor Snively

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Interannual Variability of the Climate System, Jenq-Dar Tsay

Theses/Dissertations from 2011

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West African extreme daily precipitation in observations and stretched-grid simulations by CAM-EULAG, Abayomi Abiodun Abatan

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An evaluation of fall speed characteristics in bin and bulk microphysical schemes and use of bin fall speeds to improve forecasts of warm-season rainfall, Eric Anthony Aligo

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Pursuing a proxy for carbon cycling in the temperate North Atlantic: Investigation of the utility of Arctica islandica shell carbonate to millennial-scale dissolved inorganic carbon reconstructions, Erin Beirne

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Spatial analysis of Des Moines Lobe washboard moraines using LiDAR data, Mitchell Douglas Cline

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Improvements in numerical prediction of low level winds, Adam Joshua Deppe

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WRF simulations of mesoscale convective systems at convection-allowing resolutions, Jeffrey Dean Duda

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Multi-regime states of arctic atmospheric circulation, Brandon Joshua Fisel

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Investigation of MODIS snow cover products for use in streamflow prediction systems, Logan Ray Karsten

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Regional, extreme daily precipitation in NARCCAP simulations, Sho Kawazoe

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Multi-stage exhumation history of the Orocopia schist of southern California and southwestern Arizona, Rachel Elena Lishansky

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Misunderstandings of atmospheric carbon budgets: Advances toward remediation of a common student misconception, Collin Peter Reichert

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Numerical simulations of convective initiation failure: 12 June 2002 International H₂O Project case study, Justin Tyler Schultz

Theses/Dissertations from 2010

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Origin of the 610th Avenue Moraine of the Des Moines Lobe, Story County, Iowa, Suzanne Marie Ankerstjerne

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An experimental study of subglacial clast-bed contact forces, John Louis Byers

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The rainfall over tropical South America generated by multiple scale processes, Carlos Mauricio Carrillo

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Seasonal hydrologic trends in Iowa watersheds over the last half of the 20th century, Kayla Jo Conrad

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Lipid biomarker analysis and stable carbon isotope studies of biofilms in the Green Valley acid mine drainage site, Indiana, U.S.A., Shamik Das Gupta

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Evaluating and understanding the role of convective processes in general circulation model simulations of the Madden-Julian Oscillation, Liping Deng

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Quantitative aspects of vibratory mobilization and break-up of non-wetting fluids in porous media, Wen Deng

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Mineralogical, petrological, stable isotope, and fluid inclusion studies of the Palea Kavala reduced intrusion-related and the transitional Fakos porphyry Cu-Mo to epithermal Au-Te ore systems, Andrew Fornadel

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A study of the groundwater travel time distribution at a rural watershed in Iowa: A systems theory approach to groundwater flow analysis, Priyanka Jindal

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Understanding and Improving Cloud and Radiation Processes Using Year-Long Cloud-Resolving Model Simulations, Sunwook Park

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Comparison of a watershed model (SWAT) and a groundwater flow model (GFLOW) to simulate the hydrology of two agricultural watersheds in Iowa, Lucie Macalister Sawyer

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Improving probabilistic ensemble forecasts of convection through the application of QPF-POP relationships, Christopher John Schaffer

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The Geology and Geochemistry of Base Metal Sulfide Mineralization in the Foster River area, Northern Saskatchewan, Canada, Jeffrey Alan Steadman

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Temperature sensitivity of soil organic matter decomposition and the influence of soil carbon pools and attributes, Jin Zhang

Theses/Dissertations from 2009

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Computational geological approaches for assessing the diversity and ecological distribution of fossils, Bjorn-gustaf James Brooks