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Articles 1 - 30 of 55
Full-Text Articles in Climate
Drought In The Breadbasket Of America And The Influence Of Oceanic Teleconnections, Grace Campbell
Drought In The Breadbasket Of America And The Influence Of Oceanic Teleconnections, Grace Campbell
Mahurin Honors College Capstone Experience/Thesis Projects
From 1980 to 2020, drought events accounted for 11.4% of the billion-dollar disasters in the United States (U.S.) yet caused the second highest total amount in damages at $236.6 billion. With the average cost of a drought being upwards of $9.5 billion, these natural disasters can create serious problems in agriculture. Drought is defined as a period of below average precipitation that causes damage to agriculture and water supply. Previous research has linked drought events in the U.S. Great Plains to oceanic teleconnections in the Pacific and Atlantic basins, indicating the influence of the El Niño – Southern Oscillation (ENSO), …
Ua12/13 Student Affairs - Sustainability, Wku Archives
Ua12/13 Student Affairs - Sustainability, Wku Archives
WKU Archives Collection Inventories
Records created by and about the Office of Sustainability.
Taking Action: A Case Study Analyzing The Deficiencies And Potential Opportunities For Improvement In The Severe Weather Warning System, Carson Meredith
Taking Action: A Case Study Analyzing The Deficiencies And Potential Opportunities For Improvement In The Severe Weather Warning System, Carson Meredith
Mahurin Honors College Capstone Experience/Thesis Projects
The United States is one of the most prone areas in the world to experience severe weather. A warning system operated by the National Weather Service alerts the public of the dangers of severe weather. The purpose of this project is to analyze the effectiveness of the National Weather Service warning system across Kentucky and Tennessee. A case study is presented analyzing six severe weather events in areas warned by the National Weather Service offices in Louisville, Kentucky and Nashville, Tennessee in 2018. Factors reviewed include effectiveness in issuing timely warnings, verification (i.e., whether or not severe weather actually occurred), …
Ua66/8/2 Ogden College Of Science & Engineering Geography & Geology Centers & Institutes, Wku Archives
Ua66/8/2 Ogden College Of Science & Engineering Geography & Geology Centers & Institutes, Wku Archives
WKU Archives Collection Inventories
Records created by and about Centers and Institutes administered by the Geography & Geology Department. Including:
- Center for Cave & Karst Studies
- Center for Local Government Services
- Hoffman Environmental Research Institute
- Kentucky Climate Center
- Resources Management Institute
- Small Public Water System Technology Center
A Climatology Of Convective And Non-Convective High-Wind Events Across The Eastern United States During 1973-2015, Victoria Murley
A Climatology Of Convective And Non-Convective High-Wind Events Across The Eastern United States During 1973-2015, Victoria Murley
Masters Theses & Specialist Projects
High-wind events (HWE) occur across every region of the United States (U.S.) and result in hundreds of fatalities, as well as thousands of dollars in damages annually. HWEs are classified as sustained high-winds or high-wind gusts and can be generated from convective or non-convective weather systems. This study investigates high-wind observations across the eastern U.S. during a 43-year climatological period (1973-2015) for spatial and temporal variations in wind speed and direction. Hourly surface wind observations were gathered from the National Centers for Environmental Information Data Center Integrated Surface Database (NCEI-ISD). This dataset includes qualitycontrolled wind observations from 391 first-order weather …
An Analysis Of Urban Heat Islands In Kentucky, Logan Mitchell
An Analysis Of Urban Heat Islands In Kentucky, Logan Mitchell
Mahurin Honors College Capstone Experience/Thesis Projects
The purpose of this research is to increase understanding of the Urban Heat Island (UHI) effect in Kentucky by studying its three largest cities: Louisville, Lexington, and Bowling Green. By examining the UHIs of these three cities, two major attributes can be determined: if there is a relationship between the size of the city by population and the UHI magnitude, and if UHI magnitude follows any diurnal and/or seasonal cycles. Data was collected from weather stations within the three major cities, as well as from weather stations located in the rural areas surrounding them. The length of the time series …
Evidence For Late Pliocene Deglacial Megafloods From Giant Sediment Waves In The Northern Gulf Of Mexico, Zexuan Wang
Evidence For Late Pliocene Deglacial Megafloods From Giant Sediment Waves In The Northern Gulf Of Mexico, Zexuan Wang
Masters Theses & Specialist Projects
Laurentide Ice Sheet outburst floods to the Gulf of Mexico have been mainly documented based on deep-sea cores, especially the megafloods, only during the last several interglacial episodes in the late Pleistocene. The paleoclimatic significance of giant sedimentary structures developed under unconfined Froude-supercritical turbidity currents in subaqueous settings is considerably under-examined. This research extensively documents >20-km-wide and 200-m-thick Plio-Pleistocene giant sediment waves for the first time on the northern Gulf of Mexico continental slope using 3D seismic data, which show waveform morphology in unprecedented detail. The results suggest that such large-scale bedforms were formed under sheet-like unconfined Froudesupercritical turbidity currents …
Measuring Inorganic Carbon Fluxes From Carbonate Mineral Weathering From Large River Basins: The Ohio River Basin, Autumn B. Singer
Measuring Inorganic Carbon Fluxes From Carbonate Mineral Weathering From Large River Basins: The Ohio River Basin, Autumn B. Singer
Masters Theses & Specialist Projects
Rising atmospheric CO2 concentrations have motivated efforts to better quantify reservoirs and fluxes of Earth’s carbon. Of these fluxes from the atmosphere, one that has received relatively little attention is the atmospheric carbon sink associated with carbonate mineral dissolution. Osterhoudt (2014) and Salley (2016) explored new normalization techniques to improve and standardize a process for measuring this flux over large river basins. The present research extends this work to the 490,600 km2 Ohio River drainage basin and 11 subbasins. The study estimated the DIC flux leaving these basins between October 1, 2013, and September 30, 2014, based on secondary hydrogeochemical, …
Storm Chasing Across The Plains: An Experience Portfolio, Isaac Bowers
Storm Chasing Across The Plains: An Experience Portfolio, Isaac Bowers
Mahurin Honors College Capstone Experience/Thesis Projects
The opportunity to predict and document severe weather across the Plains is not available to many, but it is a vital experience for those who hope to truly excel in meteorology. The ability to travel alongside one of the professors that has guided you through the program, apply the knowledge gained from that professor and many others, and view nature’s breathtaking power in person is truly a capstone experience for any meteorology major. Luckily, the B.S. Meteorology Program at WKU offers a select group of students this opportunity annually. This portfolio report will consist of documentation I recorded during my …
Synoptic Atmospheric Conditions, Land Cover, And Equivalent Temperature Variations In Kentucky, Dorothy Yemaa Na-Yemeh
Synoptic Atmospheric Conditions, Land Cover, And Equivalent Temperature Variations In Kentucky, Dorothy Yemaa Na-Yemeh
Masters Theses & Specialist Projects
Research has demonstrated that equivalent temperature (TE), which incorporates both the surface air temperature (T) and moist heat content associated with atmospheric moisture, is a better indicator of overall heat content. This thesis follows up on a study that used TE to determine the impacts of land use/land cover and air masses on the atmospheric heat content over Kentucky during the growing season (April-September). The study, which used data from the Kentucky Mesonet, reveals that moist weather types dominate the growing season and, as expected, differences between T and TE are smaller under dry atmospheric conditions …
Characterizing South American Mesoscale Convective Complexes Using Isotope Hydrology, Kyle J. Hogancamp
Characterizing South American Mesoscale Convective Complexes Using Isotope Hydrology, Kyle J. Hogancamp
Masters Theses & Specialist Projects
Mesoscale convective complexes (MCCs) over subtropical South America contribute an average annual volume of precipitation equal to approximately seven km3 and occur with an average regularity in the region, with more than 30 per warm season. Isotopic characteristics of precipitation, such as δ2H and δ18O values, provide information that can be used to identify unique processes and sources related to precipitation events. The largest database of isotope characteristics of precipitation within the region is the Global Network of Isotopes in Precipitation (GNIP), which provides varying temporal resolution data from stations around the world, including subtropical South America.
Using this database, …
Icelandic Fisheries: Scenario Planning For Climate Change, Tara Sorrels
Icelandic Fisheries: Scenario Planning For Climate Change, Tara Sorrels
Mahurin Honors College Capstone Experience/Thesis Projects
This study aimed to develop an understanding of how a scenario planning process could be used to assist businesses to adapt to climate change. The focus of this study was on the Icelandic fishing industry since Iceland is experiencing firsthand climate change impacts. Mitigation strategies are the main focus in climate change research, but this study focused on a possible adaptation method that requires changing management practices in order to reduce the impact of climate change on the economy. Tours of Icelandic fisheries and interviews with individuals within the Icelandic fishing industry were conducted to assess the current adaptive capacity …
Karst Landscape Influence On The Planetary Boundary Layer Atmosphere, Zachary S. Sullivan
Karst Landscape Influence On The Planetary Boundary Layer Atmosphere, Zachary S. Sullivan
Masters Theses & Specialist Projects
Karst landscapes cover approximately 20% of the ice-free land area worldwide. The soluble nature of the bedrock within a karst landscape allows for the formation of caverns, joints, fissures, sinkholes, and underground streams, which affect the hydrological behavior of the region. Currently, the Noah Land-Surface Model (Noah- LSM), coupled with the Weather Research and Forecasting (WRF) model, does not provide a representation of the physical behavior of a karst terrain. Previous research has attempted to model karst behavior through soil moisture and land cover/land use changes to determine the influence this unique landscape may have on atmospheric phenomenon. This highlights …
Advancing Methods To Measure The Atmospheric Co2 Sink From Carbonate Rock Weathering, Devon Salley Mr.
Advancing Methods To Measure The Atmospheric Co2 Sink From Carbonate Rock Weathering, Devon Salley Mr.
Masters Theses & Specialist Projects
With rising atmospheric CO2 concentrations, a detailed understanding of processes that impact atmospheric CO2 fluxes is required. While a sink of atmospheric carbon from the continents to the ocean from carbonate mineral weathering is, to some degree, offset by carbonate mineral precipitation in the oceans, efforts are underway to make direct measurements of these fluxes. Measurement of the continental sink has two parts: 1) measurement of the dissolved inorganic carbon (DIC) flux leaving a river basin, and 2) partitioning the inorganic carbon flux between the amount removed from the atmosphere and the portion from the bedrock. This study attempted to …
A Climatology Of High-Wind Events Associated With Post-Tropical Cyclones In The United States, Joshua M. Gilliland
A Climatology Of High-Wind Events Associated With Post-Tropical Cyclones In The United States, Joshua M. Gilliland
Masters Theses & Specialist Projects
During 1951-2009, 47% of all tropical systems (TSs) within the Atlantic Basin transitioned to post-tropical (PTC) extratropical classification. These systems have shown the capability of producing hurricane-force winds and gusts for portions of the eastern United States. This study provides a climatological foundation for high-wind observations that were contributed from PTCs. In this study, 76 PTC systems were identified and tracked using six hourly observations from the National Hurricane Center’s HURDAT dataset. Mean wind radii buffers were calculated and used to determine the high-wind observations attributed by PTCs. High-wind climatology was developed by using hourly surface wind data from the …
From Sustainability To Resilience: How Best To Communicate Great Challenges?, Wolfgang Brauner
From Sustainability To Resilience: How Best To Communicate Great Challenges?, Wolfgang Brauner
Education for Sustainability Summer Institute
No abstract provided.
Generalized Bathtub Hazard Models For Binary-Transformed Climate Data, James Polcer
Generalized Bathtub Hazard Models For Binary-Transformed Climate Data, James Polcer
Masters Theses & Specialist Projects
In this study, we use a hazard-based modeling as an alternative statistical framework to time series methods as applied to climate data. Data collected from the Kentucky Mesonet will be used to study the distributional properties of the duration of high and low-energy wind events relative to an arbitrary threshold. Our objectiveswere to fit bathtub models proposed in literature, propose a generalized bathtub model, apply these models to Kentucky Mesonet data, and make recommendations as to feasibility of wind power generation. Using two different thresholds (1.8 and 10 mph respectively), results show that the Hjorth bathtub model consistently performed better …
Ua668/4 Ogden College Of Science & Engineering Geography & Geology Administration, Wku Archives
Ua668/4 Ogden College Of Science & Engineering Geography & Geology Administration, Wku Archives
WKU Archives Collection Inventories
Records created by and about the administration of the Geography & Geology department.
Stable Isotopic And Geochemical Variability Within Shallow Groundwater Beneath A Hardwood Hammock And Surface Water In An Adjoining Slough (Everglades National Park, Fl), Lee J. Florea, Dorien K. Mcgee, Jonathan G. Wynn
Stable Isotopic And Geochemical Variability Within Shallow Groundwater Beneath A Hardwood Hammock And Surface Water In An Adjoining Slough (Everglades National Park, Fl), Lee J. Florea, Dorien K. Mcgee, Jonathan G. Wynn
Earth, Environmental, and Atmospheric Sciences Faculty Publications
Data from a ten-month monitoring study during 2007 in south Florida provide insight into the variation of δ18O, δD, and δ13C of DOC in surface water and shallow groundwater of the Everglades ecosystem. Bi-monthly samples were taken from surface water and time-averaged precipitation at Taylor Slough, and shallow groundwater from a well and a small cave within Palma Vista Hammock, an exposure of the Upper Pleistocene Miami Limestone.
δ18O and δD values in shallow groundwater from the well and cave remain near the mean of -2.4 ‰ and -12 ‰, respectively (VSMOW scale). 18O and D are enriched in surface …
Information Technology Implementation Decisions To Support The Kentucky Mesonet, D. Michael Grogan
Information Technology Implementation Decisions To Support The Kentucky Mesonet, D. Michael Grogan
Masters Theses & Specialist Projects
The Kentucky Mesonet is a high-density, mesoscale network of automated meteorological and climatological sensing platforms being developed across the commonwealth. Data communications, collection, processing, and delivery mechanisms play a critical role in such networks, and the World Meteorological Organization recognizes that “an observing system is not complete unless it is connected to other systems that deliver the data to the users.” This document reviews the implementation steps, decisions, and rationale surrounding communications and computing infrastructure development to support the Mesonet. A general overview of the network and technology-related research is provided followed by a review of pertinent literature related to …
Geology And Hydrology Of Karst In West-Central And North-Central Florida, Lee J. Florea
Geology And Hydrology Of Karst In West-Central And North-Central Florida, Lee J. Florea
Earth, Environmental, and Atmospheric Sciences Faculty Publications
The state of Florida is blessed with the highest density of large springs in North America and hundreds of smaller springs where the water from limestone aquifers returns to the surface (Scott et al., 2004). Spectacular underwater caves supply water to these springs. Lesser known are the equally fantastic air-filled caves of Florida and South Georgia (Florea, 2006; Lane, 1986). This paper features these underwater and airfilled caves, explores the impact of changes in sea level on karst in this near-coastal environment, and establishes several geologic and hydrologic characteristics that distinguish karst in the limestones of the southeast from karst …
Focus Group On Karst Hydrology - Conceptual Models, Aquifer Characterization, And Numerical Modeling, Martin Sauter, Lee J. Florea, Others
Focus Group On Karst Hydrology - Conceptual Models, Aquifer Characterization, And Numerical Modeling, Martin Sauter, Lee J. Florea, Others
Earth, Environmental, and Atmospheric Sciences Faculty Publications
No abstract provided.
International, Cooperative Research In The Apuseni Mountains Of Western Romania, Lee J. Florea, Bogdan P. Onac
International, Cooperative Research In The Apuseni Mountains Of Western Romania, Lee J. Florea, Bogdan P. Onac
Earth, Environmental, and Atmospheric Sciences Faculty Publications
In May of 2006, nine American scientists and cavers from the Karst Research Group at the University of South Florida traveled to western Romania to attend and present at an international conference on records of climate change in caves in the historic Roman town of Baile Hurculane. The conference, co-sponsored by the “Emil Racoviţă” Speleological Institute of Romania and the Karst Waters Institute, drew more than 100 experts in the field of climate change and karst, and was a wonderful time spent alongside the thermal springs and Austro-Hungarian bathhouses nestled within the massive limestone canyon of the Cerna River.
Following …
Cave Levels, Marine Terraces, Paleoshorelines, And The Water Table In Peninsular Florida, Lee J. Florea, H L. Vacher
Cave Levels, Marine Terraces, Paleoshorelines, And The Water Table In Peninsular Florida, Lee J. Florea, H L. Vacher
Earth, Environmental, and Atmospheric Sciences Faculty Publications
Levels of passages are a common feature of many cave systems around the world. Likewise, coastal and marine terraces are common in coastal plain settings. This paper extends the discussion of cave levels from traditional research sites in the interior lowlands of the United States to the Atlantic Coastal Plains, namely peninsular Florida. Are there levels in Florida caves, and is there a link between the elevation of cave levels, marine terraces, paleoshorelines, and thus the water table, above and below present sea level in peninsular Florida?
Evaluating Spatial Variability Of Precipitation In Kentucky With Exploratory Data Analysis, Daniel Taylor
Evaluating Spatial Variability Of Precipitation In Kentucky With Exploratory Data Analysis, Daniel Taylor
Masters Theses & Specialist Projects
Spatial variability of precipitation is examined over the state of Kentucky and surrounding areas. The study focuses on the analysis of monthly precipitation totals from the period of 1961-2000. The purpose of the study is to develop a set of indices to represent the spatial variability of the study area for a given month. Various exploratory data analysis methods such as variography, kriging, and cluster analysis were used. The study attempts to quantify the second order (local) effects of the spatial variation of precipitation as a means to provide insight into the prediction of precipitation randomness. This task can be …
A Model Of Precipitation Rates In Kentucky, 1965-1996, Kevin Cary
A Model Of Precipitation Rates In Kentucky, 1965-1996, Kevin Cary
Masters Theses & Specialist Projects
Hourly precipitation data from thirty cooperative stations in Kentucky from 1965 to 1996 were used to determine the diurnal distribution of precipitation rates. Descriptive summaries for the diurnal distribution for each climate division in Kentucky and for Kentucky as a whole were calculated. In each case, the trends were similar. Precipitation rates increased into the afternoon and then decreased until sunrise. A stochastic model was developed to estimate mean seasonal precipitation rates in Kentucky by using regional and localized parameters. More than half of the variation (r2 = 0.57) in precipitation rates can be explained by the following variables: 1) …
Karst Genetic Model For The French Bay Breccia Deposits, San Salvador, Bahamas, Lee J. Florea, John Mylroie, Jim Carew
Karst Genetic Model For The French Bay Breccia Deposits, San Salvador, Bahamas, Lee J. Florea, John Mylroie, Jim Carew
Earth, Environmental, and Atmospheric Sciences Faculty Publications
No abstract provided.
Ua52/1 Hail Storm Memories, Wku Archives
Ua52/1 Hail Storm Memories, Wku Archives
WKU Archives Records
Memories of WKU faculty, staff, alumni and the general public regarding the 1988 hail storm solicited by WKU Archives.
Ua66/8/2 Climatic Extremes In Kentucky, Wku Kentucky Climate Center
Ua66/8/2 Climatic Extremes In Kentucky, Wku Kentucky Climate Center
WKU Archives Records
Kentucky Climate Center report number 28 Climatic Extremes in Kentucky.
Ua66/8/2 Climate Of Bowling Green, Kentucky, Wku Kentucky Climate Center, Glen Conner, John Ternent
Ua66/8/2 Climate Of Bowling Green, Kentucky, Wku Kentucky Climate Center, Glen Conner, John Ternent
WKU Archives Records
Climatological summary of weather and temperatures for Bowling Green, Kentucky between 1961 and 1990.