Oceanography and Atmospheric Sciences and Meteorology Commons^™

Aquatic Diversity In A Changing Tropical Andean Glacierized Catchment: Macroinvertebrates Reveal Possible Important Consequences To The Chimborazo Region As Glaciers Recede And The Climate Continues To Change, Tanner Thomas

Independent Study Project (ISP) Collection

Tropical Andean glaciers are retreating rapidly, and their disappearance will have drastic consequences for the people and ecosystems that depend on them. While they have begun to receive the attention they deserve in scientific literature, much is still not known. Majority of these investigations have taken place on the Volcán Antisana, while other important glacierized systems, like the Volcán Chimborazo have received little attention. This investigation aimed to a) evaluate the possible effects of glacier loss and climate change on aquatic ecosystems by comparing glacial meltwater, non-glacial and mixed streams, and b) to evaluate the effects of pasture intensity on …

Stable Isotopes Reveal Minimal Spatial And Temporal Variation In Diet Of The Wrymouth (Cryptacanthodes Maculatus), Emilie A. Geissinger, Brian F. Beal, William G. Ambrose

Marine Science

Predation by infaunal and epibenthic predators is often an important determinant of marine soft-bottom community structure. The role of the predatory, benthic-dwelling fish, the wrymouth (Cryptacanthodes maculatus), in the soft-bottom food web has received little attention. The purpose of our study was to examine spatial and temporal variability in diet and trophic position of wrymouth at two lower intertidal sites in eastern Maine, USA. Wrymouth, their potential prey, and primary producers were collected in the spring and summer of 2013 in Machiasport and Beals, Maine. Stable isotope analysis was used to determine trophic position of the fish and its potential …

Design And Development Of Distributed Lower Atmospheric Instrumentation Packages, Julio Guardado

Doctoral Dissertations and Master's Theses

The recent miniaturization of embedded electronics and widespread availability of low-cost sensors, microcontrollers and transceivers has enabled development of sensor suites that can be used for high temporal and spatial resolution measurements of atmospheric parameters such as temperature, pressure, humidity, particulate counts, wind velocity and much more. This thesis presents the development of both airborne and ground based distributed atmospheric instrumentation suites. First, we present a low-cost radiosonde platform capable of simultaneous multipoint launches or high cadence back-to-back continuous launches. This radiosonde platform can do wind measurements on an approximately 60 m scale up to a minimum of 25 km. …

Simulation, Optimization, And Economic Assessment Of Pelamis Wave Energy Converter, Hana Ghaneei, Mohammadreza Mahmoudi

Faculty Articles, Papers, and Other Scholarship

Wave energy and power is accessible on almost any body of water. One of the most widely known floating structures to generate renewable energy from the seas and the ocean is wave energy converter Pelamis. In this study, an attempt was made to simulate the dynamic behaviour of Pelamis P2 in the software AQWA under the influence of a nonlinear second-order Stokes wave. Pelamis P2 was simulated in different marine conditions including different water depths, wave heights, periods, and angles to assess its optimal operation. With the results in mind, it can be argued that with an increase in water …

Using Field Scale Electrical Data To Understand Real-Time Agricultural Water Delivery, Bradley Dowell

Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research

Areas across the High Plains (Ogallala) Aquifer region are experiencing unsustainable groundwater level declines and impacts to streamflow due to increasing human influence, posing challenges for sustaining future agricultural economies and groundwater resources. State and local agencies manage water using groundwater models, which are not at the same temporal and spatial scale as water management on farms. Well-informed agricultural water usage cannot be achieved without reliable and cost-effective water use at farm scale. Water meters are expensive and rarely installed unless required by the state or other regulatory agency; however, most center pivots have their own power supply, which reports …

The Influence Of Particle Concentration And Bulk Characteristics On Polarized Oceanographic Lidar Measurements, Brian L. Collister, Richard C. Zimmerman, Charles I. Sukenik, William M. Balch, Victoria J. Hill

OES Faculty Publications

Oceanographic lidar measurements of the linear depolarization ratio, δ, contain information on the bulk characteristics of marine particles that could improve our ability to study ocean biogeochemistry. However, a scarcity of information on the polarized light-scattering properties of marine particles and the lack of a framework for separating single and multiple scattering effects on δ have hindered the development of polarization-based retrievals of bulk particle properties. To address these knowledge gaps, we made single scattering measurements of δ for several compositionally and morphologically distinct marine particle assemblages. We then used a bio-optical model to explore the influence of multiple …

La Ciencia Deshumanizada: La Relación Humano-Ambiental Entre El Cadic-Conicet Y La Antártida, Ariel Silverman

Independent Study Project (ISP) Collection

Las investigaciones científicas reconocen cada vez más que los humanos tienen una relación recíproca con la naturaleza, donde cambios rápidos en uno produce inestabilidad en el otro (Mace, 2014). Los humanos y la Antártida son particularmente interdependientes considerando la vulnerabilidad de los servicios ecosistémicos antárticos al cambio climático antropogénico. El Centro Austral de Investigaciones Científicas (CADIC) en Ushuaia, Argentina, es una institución importante en la producción del conocimiento sobre el continente. Por lo tanto, cómo lxs científicxs del CADIC perciben la relación de los humanos con la Antártida pueden afectar la manera en que la Antártida es afectada, y, en …

Using Remote Sensing Technologies In Relocating Lubrak Village And Visualizing Flood Damages, Ronan Wallace

Independent Study Project (ISP) Collection

As weather patterns change across the world, there are communities impacted by climate change that are left unnoticed. In the Himalayan mountain range, communities have suffered, experiencing an increase in flash flooding and droughts. For Lubrak Village in Lower Mustang, the community faces the threats of flash flooding. Over the last ten years, the amount of flash flooding has increased, occurring more than once each monsoon season. After every flood, concrete-like sediment is left behind, hardening across the riverbed and increasing its elevation. As the riverbed elevation increases, this sediment encroaches on Lu-brak Village’s agricultural fields and ancient mud buildings, …

2022 April - Tennessee Monthly Climate Report, Tennessee Climate Office, East Tennessee State University

Tennessee Climate Office Monthly Reports

No abstract provided.

Empirical And Modeled Δ13c And Δ15n Isoscapes In The Gulf Of Mexico And Their Application To Fish Eye Lens Migration Studies, Brianna Michaud

USF Tampa Graduate Theses and Dissertations

Isoscapes are depictions of the spatial patterns of isotopic values in a given area. Isoscapes can be created using measurements form samples (empirical isoscapes) or using statistical models of spatial isotopic variation (modeled isoscapes). Isoscapes have a wide variety of potential applications though, in the realm of marine ecology, they are most often used infer ecological processes, food web linkages, the origin of samples, and the movements of marine organisms.

However, to use isoscapes for these applications, it is necessary to have isoscapes at spatial scales relevant to the application in question. It is also necessary to have isoscapes that …

Destruction Is A Must-See: Coastal Heritage Site Erosion And Public Perception Of Climate Change, Haley Borowy

Senior Theses

Archaeological sites in South Carolina are vanishing. As sea level rise, and therefore coastal erosion, worsen, more sites will disappear. The questions of how erosion at these sites is measured and how the public perceives the effects of climate change have been studied separately, but not together. Here, the intersection of these is discussed, alongside how sites are portrayed affects how the public perceives them, and therefore their importance. Studies on measuring coastal erosion, local news reports, government documents, and public perception of coastal management and sea level rise illuminate how people eventually decide what is worth saving.

Institute For Global Health And Development : Issue 3 - April - June 2022, Institute For Global Health And Development

IGHD Newsletters

• Research Highlights
• Reflections from IGHD’s Associate Faculty
• Key Publications
• Webinars and Dialogues
• Celebration
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Evaluating Climatic Influences On The Technical Performance Of Built Infrastructure Assets, Sarah L. Brown, Steven J. Schuldt, Michael N. Grussing, Michael A. Johnson, Justin D. Delorit

Faculty Publications

Asset performance evaluations serve as a benchmark that can be used to make asset manufacturer selection decisions, i.e., choosing the brand of manufacturer that provides the highest performance among all brand competitors. Understanding the environmental conditions to which assets are subjected provides facility managers another data point to understand asset performance. This research builds upon a previously published performance-based manufacturer selection metric by investigating the linkage between asset performance and exposure to local climate, using chiller and air handler data from 20 United States Air Force installations. The link between environmental factors such as Heating Degree Days (HDD); Cooling Degree …

Suitability Of Flood Hazard Assessment Methods For Tanzania: A Case Of Little Ruaha And Upper Ngerengere Catchment, Kashimbi J. Kihara, Patrick Valimba, Joel Nobert

Tanzania Journal of Science

Understanding the applicability of flood quantile estimation methods in flood hazard assessment is fundamental for planning, prevention, and management of flood risks. Therefore, this study evaluates and compares three hydrological methods, namely Hydrologiska Byråns Vattenbalansavdelning (HBV), Soil Conservation Service-Curve Number (SCS-CN), and regional regression equation (RRE), to estimate flood quantiles embedded in the existing flood damage assessment framework by applying them to two different river catchments, Little Ruaha (LR) and Upper Ngerengere (UN), Tanzania. The evaluation of method performance was carried out using three standard statistical measures for data from 1954 to 2010 and the 1971–1988 period in LR and …

Boron Doped Zno Films Deposited By Dc Reactive Sputtering Using Zn:B Target: Influence Of The Deposition Temperature On The Structural, Electrical And Optical Properties, Lwitiko P. Mwakyusa, Nuru R. Mlyuka, Margaret E. Samiji

Tanzania Journal of Science

ZnO-based transparent and conducting oxides (TCOs) are commonly used as a window layer in thin-film solar cells. However, TCOs with high transparency in the visible and near-infrared parts of the electromagnetic spectrum, plus excellent electrical properties are required in this application. In this study, TCOs based on ZnO:B films deposited by DC reactive sputtering using Zn:B alloy target were investigated. The impact of deposition temperature on the growth and physical properties of the films was examined. Structural, optical and electrical properties of these films were investigated by means of x-ray diffraction (XRD), Ultraviolet-Visible-Near Infrared (UV-VIS-NIR) spectroscopy, and Hall effect measurement, …

Tracing Climate-Driven Changes In Arctic Ocean Chemistry Using Radioactive Isotopes, Lauren Kipp

School of Earth & Environment Departmental Research

No abstract provided.

Identification Of Loop Current Ring Separation Events In The Gulf Of Mexico, Helga Huntley

College of Science & Mathematics Departmental Research

No abstract provided.

Informing Management Of Henrys Lake, Idaho, Using An Integrated Catch-At-Age Model, Joshua L. Mccormick, Jennifer Vincent, Brett High, Darcy K. Mccarrick, Michael C. Quist

United States Geological Survey: Staff Publications

Henrys Lake, Idaho, supports a popular fishery for Yellowstone Cutthroat Trout Oncorhynchus clarkii bouvieri and Yellowstone Cutthroat Trout × Rainbow Trout O. mykiss hybrids. A majority of the adult population of fish in Henrys Lake are of hatchery origin that were stocked as fingerlings. The fishery is closed to angling during the late winter and spring months, but fisheries managers are considering opening the fishery year-round with catch-and-release- only regulations or with a two-fish bag limit during the extended season. However, there is concern that the proposed management actions may negatively affect the current fishery. Therefore, we developed an integrated …

Comparative Toxicity Of Hydrocarbons For Evaluation Of Lysmata Boggessi As An Experimental Proxy For Deep-Water Column Micronekton, Dorothy-Ellen A. Renegar, Nicholas Turner, Gopal Bera, Eileen G. Whitemiller, Bernhard Riegl, Jose Sericano, Anthony H. Knap

Marine & Environmental Sciences Faculty Articles

The potential impacts of sub-surface hydrocarbon plumes to deep-water column micronekton are an important consideration in a more complete understanding of ecosystem effects resulting from deep-sea oil spills. However, evaluating toxicity in these organisms presents multiple challenges, and the use of a shallow-water proxy species allows comparison and validation of experimental results. This study thus examined the suitability of the peppermint shrimp, Lysmata boggessi, as an experimental proxy for ecologically important deep-sea zooplankton/micronekton in hydrocarbon toxicity assays. This crustacean species occurs in shallow coastal marine environments throughout the western Atlantic, Caribbean and Gulf of Mexico, is similar in …

Climate Change Could Make Allergy Season Longer, Odu Expert Says, Amber Kennedy

News Items

No abstract provided.