Accelerating Atmospheric Gravity Wave Simulations Using Machine Learning: Kelvin-Helmholtz Instability And Mountain Wave Sources Driving Gravity Wave Breaking And Secondary Gravity Wave Generation,
2023
Embry-Riddle Aeronautical University
Accelerating Atmospheric Gravity Wave Simulations Using Machine Learning: Kelvin-Helmholtz Instability And Mountain Wave Sources Driving Gravity Wave Breaking And Secondary Gravity Wave Generation, Wenjun Dong, David Fritts, Alan Z. Liu, Hanli Liu, Jonathan Snively
Publications
Gravity waves (GWs) and their associated multi-scale dynamics are known to play fundamental roles in energy and momentum transport and deposition processes throughout the atmosphere. We describe an initial, two-dimensional (2-D), machine learning model – the Compressible Atmosphere Model Network (CAMNet) - intended as a first step toward a more general, three-dimensional, highly-efficient, model for applications to nonlinear GW dynamics description. CAMNet employs a physics-informed neural operator to dramatically accelerate GW and secondary GW (SGW) simulations applied to two GW sources to date. CAMNet is trained on high-resolution simulations by the state-of-the-art model Complex Geometry Compressible Atmosphere Model (CGCAM). Two …
The Importance Of Processing And Understanding Bacteriophages,
2023
Coastal Carolina University
The Importance Of Processing And Understanding Bacteriophages, Alexandra Greco, Emily Bishop, Emma Hofseth, Kelsi Phelps
Undergraduate Research Competition
There are many bacteria that are increasingly becoming antibiotic resistant resulting in a new prevalent medical issue. Bacteriophages are evolutionary virus weapons that infect and fight against these infectious bacteria that give rise to Bacteriophages the most abundant biological entity found in nature, outnumbering all life combined, with a total estimated population of 1031. As part of BIOL 302L - Phage Discovery, we focused on identifying phages from individually collected soil samples found regionally in South Carolina. Through a series of experiments, we were able to identify and amplify two newly discovered phages that infect Mycobacterium Smegmatis following the protocols …
Telling Their Story: Identifying Stranded Bottlenose Dolphins Using Dorsal Fin Photo-Identification To Match Known Individuals,
2023
Coastal Carolina University
Telling Their Story: Identifying Stranded Bottlenose Dolphins Using Dorsal Fin Photo-Identification To Match Known Individuals, Grace Richa
Undergraduate Research Competition
Bottlenose dolphins are protected and managed under the Marine Mammal Protection Act. When dolphins die (strand), researchers investigate the cause of death, but additional information regarding past experience and distribution can help to identify long-term exposure to pathogens and threats. The objective of this study is to use dorsal fin photo-identification to identify stranded bottlenose dolphins by matching them to known individuals from historical CCU research survey data. Photos from vessel-based surveys in Cape Romain, Murrells Inlet, Winyah Bay, and North Inlet, SC were sorted, cropped, and compared to existing fins in the CCU catalog using finFindR, a photo processing …
Microclimate Variability Between Coop Weather Station And Proposed Site For Relocation,
2023
Utah State University
Microclimate Variability Between Coop Weather Station And Proposed Site For Relocation, Ashley Butikofer
Student Research Symposium
The Utah Climate Center has contributed to the Cooperative Observer Program associated with the National Weather Service since 1893. This consistent 130-year climate record of precipitation and temperature is important for studying the changing climate in Logan as well as contributing to a national network of weather data used to verify weather forecasting models. The COOP station is currently located to the Northeast of the Nutrition and Food Science building on USU’s campus. In recent years, there has been concern of bias in the data due to the proximity of the station to highly impervious surfaces including campus buildings, parking …
Identifying Overwash Layers In Marsh Sediment,
2023
Coastal Carolina University
Identifying Overwash Layers In Marsh Sediment, Charles Mina
Undergraduate Research Competition
Hurricanes have become one of the most researched topics in recent years, due to their damage costs and their uncertain correlations with climate change. Much of the research for this topic has come from direct interaction with storms, such as damage reports and land surveys. However, there is a gap in the historical record of hurricanes, as most historical record is only written. These records can be biased and are too short of a record to identify a pattern of climate change. Grain size analysis, where sizes of sediment grains are measured, can be used to identify the storm events …
The Impact Of Prc Language Policies On Minority Languages Of China,
2023
Coastal Carolina University
The Impact Of Prc Language Policies On Minority Languages Of China, Margaret Shoop
Undergraduate Research Competition
While language is often used as a tool to bring people together and celebrate differences, language can also be weaponized and used to suppress minority groups of people. There are over three hundred unique languages and dialects spoken in Mainland China, with Mandarin Chinese being the most widely spoken of the languages. Mandarin is the official state language of the People’s Republic of China (PRC), and it is also the primary language taught in schools across the country. Despite official Chinese policy of teaching Mandarin Chinese alongside local dialects, Mandarin is favored over minority languages. The unequal emphasis on Mandarin …
Seasonal Fluctuation Of Nutrients That Lead To Microcystis Bloom Development In Wall Pond, Coastal Carolina University,
2023
Coastal Carolina University
Seasonal Fluctuation Of Nutrients That Lead To Microcystis Bloom Development In Wall Pond, Coastal Carolina University, Alyssa Antolak
Undergraduate Research Competition
The harmful cyanobacteria Microcystis globally dominates eutrophic freshwater systems. Eutrophication leading to nitrogen and phosphorus loading into aquatic systems is increasing bloom propagation and shifting diatom/dinoflagellate dominated systems to cyanobacteria dominated systems. Understanding seasonal variability and environmental parameters combined with nutrient loading will allow for better understanding of what factors are influencing Microcystis blooms. Biweekly plankton samples, environmental parameters, and nutrients were collected from Wall Pond from spring 2022-spring 2023. Nitrogen and phosphate limitation was examined by performing seasonal nutrient limitation experiments. Early results show that yearly plankton samples shifted from diatom dominated in the late summer-early fall to Microcystis …
Comparative Analysis Of Implementing Solar Energy In South Carolina,
2023
Coastal Carolina University
Comparative Analysis Of Implementing Solar Energy In South Carolina, Paige Huntzberry, Jo Whitney
Undergraduate Research Competition
Solar energy is becoming an increasingly popular method of providing energy to homes and businesses all over the world. Converting to solar energy is a huge step in reducing our carbon footprint, a driving force of global climate change. While this type of energy production provides an eco-friendly approach to power, requiring minimal maintenance and virtually no additional infrastructure, many are still opposed to the implementation due to financial reservations. The aim of this project is to design a solar array for installation on a building at the Medical University of South Carolina, providing a cost effective and practical approach …
2023 April 6 - Tennessee Weekly Drought Summary,
2023
East Tennessee State University
2023 April 6 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University
Tennessee Climate Office Weekly Drought Summaries
No abstract provided.
Physiological And Transcriptomic Responses Of Two Artemisia Californica Populations To Drought: Implications For Restoring Drought-Resilient Native Communities,
2023
Chapman University
Physiological And Transcriptomic Responses Of Two Artemisia Californica Populations To Drought: Implications For Restoring Drought-Resilient Native Communities, Hagop S. Atamian Dr., Jennifer L. Funk
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
As climate change brings drier and more variable rainfall patterns to many arid and semi-arid regions, land managers must re-assemble appropriate plant communities for these conditions. Transcriptome sequencing can elucidate the molecular mechanisms underlying plant responses to changing environmental conditions, potentially enhancing our ability to screen suitable genotypes and species for restoration. We examined physiological and morphological traits and transcriptome sequences of coastal and inland populations of California sagebrush (Artemisia californica), a critical shrub used to restore coastal sage scrub vegetation communities, grown under low and high rainfall environments. The populations are located approximately 36 km apart but …
Evaluating Fungal Population Response To The Miocene Climatic Optimum: High-Resolution Palynological Insights From The South China Sea And Mcmurdo Sound, Antarctica,
2023
Louisiana State University and Agricultural and Mechanical College
Evaluating Fungal Population Response To The Miocene Climatic Optimum: High-Resolution Palynological Insights From The South China Sea And Mcmurdo Sound, Antarctica, Mallory Pilie
LSU Master's Theses
Fungi play key and specific roles in ecosystems, specifically as many have restricted geographic distributions, known host/substrate preferences, and are important local environmental indicators due to their short dispersal distances. This study of fossil fungi from a time interval of pronounced global warming, the Miocene Climatic Optimum (MCO), allows analysis of fungal response to an analogue for future climate change scenarios. The research presented herein is part of a larger project, Fungi in a Warmer World (FiaWW), which is using globally-distributed sediment samples to provide foundational information on fungal community distribution patterns and will provide the first fungi-based climatological reconstructions …
An Analysis Of Hurricane Laura's Storm Surge In Cameron Parish Using Synthetic Storm Tracks, Climatology, And Statistics,
2023
Louisiana State University and Agricultural and Mechanical College
An Analysis Of Hurricane Laura's Storm Surge In Cameron Parish Using Synthetic Storm Tracks, Climatology, And Statistics, Cameron Goff
LSU Master's Theses
Cameron Parish is a large coastal parish in southwest Louisiana that has been impacted by several powerful tropical cyclones. In 2020, the strongest hurricane in recorded history to ever hit this region, Hurricane Laura, set a state record for the highest storm surge measurement at 6.34 meters. I examine the climatology of tropical cyclone landfalls in this parish, looking for trends in intensity and frequency with time. I then compare the extreme surge of Hurricane Laura with a dataset of 645 synthetic tropical cyclones generated and used by the Coastal Hazards System for Louisiana. Plots comparing various meteorological statistics to …
20-Year Assessment Of Total Suspended Sediment (Tss) Variability In Barataria Bay From Modis Ocean Color Using A Combination Of Adaptive Semi-Analytical And Neural Network Algorithms,
2023
Louisiana State University and Agricultural and Mechanical College
20-Year Assessment Of Total Suspended Sediment (Tss) Variability In Barataria Bay From Modis Ocean Color Using A Combination Of Adaptive Semi-Analytical And Neural Network Algorithms, Bijaylaxmi Sahoo
LSU Master's Theses
Barataria Bay, a hydrologically dynamic basin in the northern Gulf of Mexico, exhibits a distinct spatio-temporal distribution of total suspended sediment (TSS). However, studies on sediment distribution are limited by availability of in-situ data as well as the limitation of ocean color algorithms for suspended sediments in shallow optically complex waters. Barataria Bay TSS concentration profile is complex, influenced in the upper basin by fresh water sources such as the Davis Pond Freshwater Diversion, and in the lower bay by the river plume and marine influence near the mouth of the bay. To efficiently study the sediment dynamics in the …
Varying Genesis And Landfall Locations For North Atlantic Tropical Cyclones In A Warmer Climate,
2023
Rowan University
Varying Genesis And Landfall Locations For North Atlantic Tropical Cyclones In A Warmer Climate, Mackenzie M. Weaver, Andra J. Garner
School of Earth & Environment Departmental Research
Tropical cyclones (TCs) are one of the most dangerous hazards that threaten U.S. coastlines. They can be particularly damaging when they occur in densely populated areas, such as the U.S. Northeast. Here, we investigate seasonal-scale variations in TC genesis and subsequent first landfall locations of > 37,000 synthetic TCs that impact the U.S. Northeast from the pre-industrial era (prior to 1800) through a very high emissions future (RCP8.5; 2080–2100). TC genesis in the Main Development Region decreases across all parts of the season from the pre-industrial to the future, with the greatest decreases in the proportion of genesis (up to 80.49%) …
Quantifying Mud Settling Velocity As A Function Of Turbulence And Salinity In A Deltaic Estuary,
2023
Louisiana State University and Agricultural and Mechanical College
Quantifying Mud Settling Velocity As A Function Of Turbulence And Salinity In A Deltaic Estuary, Michael W. Mcdonell
LSU Master's Theses
Mud settling velocity is controlled by flocculation, which in turn strongly depends on turbulence and on the chemistry and biology of the water-sediment mixture. As a result, mud settling velocity can be poorly constrained in coastal areas and vary in space and time by orders of magnitude. Here we quantified mud settling velocity in Barataria Basin, a deltaic estuary in Louisiana (USA), using three independent methods: eddy covariance (one station for 200 days), floc cameras (4 stations at one time), and Rouse profile inversion (14 stations, replicated 10-30 times each). Eddy covariance indicates that settling velocity increases with turbulence, at …
Silver Carp Hypophthalmichthys Molitrix Movements In The Lower Cumberland And Lower Tennessee River,
2023
Murray State University
Silver Carp Hypophthalmichthys Molitrix Movements In The Lower Cumberland And Lower Tennessee River, Miranda Belanger
Scholars Week
Silver Carp Hypophthalmichthys molitrix are an invasive species making up a large portion of the fish biomass in the lower portions of the Tennessee River and the Cumberland River. This species is expanding its range throughout the upper portions of these rivers, beginning with Kentucky Lake and Lake Barkley. Silver Carp rarely spawn in Kentucky Lake and Lake Barkley, but they can enter these reservoirs through the lock chamber. Thus, the bottleneck created by lock chambers can be used to control expansion of invasive Silver Carp. Although Silver Carp movement patterns have been studied in other portions of the Tennessee …
Gravity Waves Emitted From Kelvin-Helmholtz Instabilities,
2023
Embry-Riddle Aeronautical University
Gravity Waves Emitted From Kelvin-Helmholtz Instabilities, Alan Z. Liu, Wenjun Dong, David C. Fritts, Thomas S. Lunda, Han-Li Liu
Publications
Fritts, Wang, Lund, and Thorpe (2022, https://doi.org/10.1017/jfm.2021.1085) and Fritts, Wang, Thorpe, and Lund (2022, https://doi.org/10.1017/jfm.2021.1086) described a 3-dimensional direct numerical simulation of interacting Kelvin-Helmholtz instability (KHI) billows and resulting tube and knot (T&K) dynamics that arise at a stratified shear layer defined by an idealized, large-amplitude inertia-gravity wave. Using similar initial conditions, we performed a high-resolution compressible simulation to explore the emission of GWs by these dynamics. The simulation confirms that such shear can induce strong KHI with large horizontal scales and billow depths that readily emit GWs having high frequencies, small horizontal wavelengths, and large vertical group velocities. The …
Abcds Of Triggerfish In Pemba And Misali Island: Abundance, Biodiversity, Behaviour, Cultural Significance And Distribution,
2023
SIT Study Abroad
Abcds Of Triggerfish In Pemba And Misali Island: Abundance, Biodiversity, Behaviour, Cultural Significance And Distribution, Hannah Ng Shueh Yi
Independent Study Project (ISP) Collection
This study takes a socioecological approach to understanding triggerfish (Balistidae) in Pemba Island, using Misali Island reefs as a sample ecological site. Two reef sites on Misali Island and three of four districts in Pemba were observed during the study. The abundance of Balistipus undulatus at one of two study sites is close to the maximum carrying capacity of the reef. Overall observed biodiversity was low. Behavioural trends point to distinct species specific defence strategies and species aggression taking different forms. Triggerfishes cultural significance was primarily as a food fish, though it is not highly sought after. With polarised responses …
Hydropower To The People: Implications Of A Comparative Macroinvertebrate Study On Either Side Of The Central Hidroeléctrica Topo In Tungurahua, Ecuador,
2023
SIT Study Abroad
Hydropower To The People: Implications Of A Comparative Macroinvertebrate Study On Either Side Of The Central Hidroeléctrica Topo In Tungurahua, Ecuador, Grace Mazur
Independent Study Project (ISP) Collection
This study uses macroinvertebrates as bioindicators to assess the water quality upstream and downstream of a hydroelectric project in Ecuador’s eastern cloud forest. Ecuador has increasingly turned to hydropower to supply its energy needs as pressure mounts to turn away from fossil fuels. This transition has been realized on the Río Topo, located in the province of Tungurahua. This study aims to determine how the Central Hidroeléctrica Topo (CHT), a diversion hydroelectric project (HEP) constructed on the Río Topo in the 2010s, has affected the water quality of the river. Samples were taken of benthic (bottom-dwelling) macroinvertebrates in the Río …
People Power & Politics: Evaluating The Impact Of The Conselho De Cidadãos De Lisboa On Climate Policy And Political Efficacy In Lisbon,
2023
SIT Study Abroad
People Power & Politics: Evaluating The Impact Of The Conselho De Cidadãos De Lisboa On Climate Policy And Political Efficacy In Lisbon, Marion Linde
Independent Study Project (ISP) Collection
As the social and ecological effects of climate change intensify, governments across the globe must evaluate how best to deal with the climate crisis. Likewise, increasing citizen participation in decision-making processes has been a key strategy for dealing with such issues. Theories on the benefits of citizen participation inform real practices such as democratic mini-publics and citizens assemblies. In Lisbon, Portugal, the Câmara Municipal de Lisboa implemented the first edition of the Conselho de Cidadãos de Lisboa (CCL) in May 2022. The CCL is a citizens assembly designed to directly involve residents in city policy-making, with the first edition focusing …
