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Articles 451 - 480 of 16421

Full-Text Articles in Physical Sciences and Mathematics

Microplastics Distribution Within Western Arctic Seawater And Sea Ice, Alessandra D’Angelo, Nicole Trenholm, Brice Loose, Laura Glastra, Jacob Strock, Jongsun Kim Sep 2023

Microplastics Distribution Within Western Arctic Seawater And Sea Ice, Alessandra D’Angelo, Nicole Trenholm, Brice Loose, Laura Glastra, Jacob Strock, Jongsun Kim

School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations

Microplastic pollution has emerged as a global environmental concern, exhibiting wide distribution within marine ecosystems, including the Arctic Ocean. Limited Arctic microplastic data exist from beached plastics, seabed sediments, floating plastics, and sea ice. However, no studies have examined microplastics in the sea ice of the Canadian Arctic Archipelago and Tallurutiup Imanga National Marine Conservation Area, and few have explored Arctic marginal seas’ water column. The majority of the microplastic data originates from the Eurasian Arctic, with limited data available from other regions of the Arctic Ocean. This study presents data from two distinct campaigns in the Canadian Arctic Archipelago …

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Climate Change Adaptation And Mitigation Strategies For Building A Green Silk Road, Tandong Yao, Jianping Huang, Baiqing Xu, Yanfen Wang, Xi Chen, Junguo Liu, Qingyun Duan, Guangjian Wu, Weicai Wang Sep 2023

Climate Change Adaptation And Mitigation Strategies For Building A Green Silk Road, Tandong Yao, Jianping Huang, Baiqing Xu, Yanfen Wang, Xi Chen, Junguo Liu, Qingyun Duan, Guangjian Wu, Weicai Wang

Bulletin of Chinese Academy of Sciences (Chinese Version)

Areas along the Belt and Road face not only natural process-related challenges such as frequent extreme weather events caused by abnormal climate warming, uneven distribution of water resources, but also management-related challenges such as extensive resource management, insufficient protection of ecology and biodiversity, and underutilization of carbon sink potential. To address these challenges and ensure a sustainable future, it is necessary to strengthen scientific and technological cooperation in response to climate change along the Silk Road, and to enhance the quality of the Green Silk Road construction. Key areas of scientific and technological cooperation should focus on water-ecological collaborative management …

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Main Climate Change Characteristics And Disaster Risks Oriented Towards Carbon Neutrality Over The Belt And Road Regions, Jingyong Zhang, Jing He, Lixia Zhang, Zhencai Du, Renqiang Li, Ming Xu Sep 2023

Main Climate Change Characteristics And Disaster Risks Oriented Towards Carbon Neutrality Over The Belt And Road Regions, Jingyong Zhang, Jing He, Lixia Zhang, Zhencai Du, Renqiang Li, Ming Xu

Bulletin of Chinese Academy of Sciences (Chinese Version)

Climate change has been widely recognized as one of most severe risks that the world faces. The recent 50 years are the warmest period in the last 2 000 years with respect to surface temperature averaged over the Belt and Road regions, which is mainly attributed to continuously increasing and accumulating of carbon emissions from human activities. Since the 1980s, over the Belt and Road regions mean climate change is characterized as surface warming at a faster rate, increased precipitation and evaporation, and accelerated sea level rise among others, and extreme weather and climate events such as hot extremes, rainstorms …

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Climate Technology Demand Assessment For Participating Countries In Belt And Road Initiative And Policy Recommendations For Promoting South-South Technology Cooperation, Minpeng Chen, Qiang Liu, Meixun Gao, Fei Teng Sep 2023

Climate Technology Demand Assessment For Participating Countries In Belt And Road Initiative And Policy Recommendations For Promoting South-South Technology Cooperation, Minpeng Chen, Qiang Liu, Meixun Gao, Fei Teng

Bulletin of Chinese Academy of Sciences (Chinese Version)

Belt and Road countries and regions have increasingly recognized the urgent need for climate mitigation and adaptation in order to achieve the Paris Agreement and the Sustainable Development Goals (SDGs). Transferring and disseminating climate technologies are effective ways in which developing countries in the region can enhance their capacity to address the challenges of climate change. This study assesses the characteristics of climate change technology needed in Belt and Road countries and regions, based on the United Nations Framework Convention on Climate Change's Technology Needs Assessment (TNA) report as well as the Cooperative Patent Classification (CPC) system. It identifies and …

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Research On Low-Carbon Transition Pathways And Suggestions For Climate Cooperation Of Bri Countries, Kaiwe Zhu, Xianchun Tan, Baihe Gu, Jianping Zhang, Lingsi Kong Sep 2023

Research On Low-Carbon Transition Pathways And Suggestions For Climate Cooperation Of Bri Countries, Kaiwe Zhu, Xianchun Tan, Baihe Gu, Jianping Zhang, Lingsi Kong

Bulletin of Chinese Academy of Sciences (Chinese Version)

Climate cooperation among Belt and Road Initiative (BRI) countries holds significant practical importance for achieving low-carbon transition and sustainable development within the BRI framework. To analyze the pathway towards low-carbon transition under different representative concentration pathway (RCP) scenarios and emission quota allocation methods, the CGEM-BRI model was developed. The study also examined the potential requirements for climate finance, capacity building, and management system. Based on these findings, recommendations for climate cooperation between China and BRI countries were formulated. The study revealed that in order to limit global temperature rise for 1.5℃ in 2100, renewable energy sources should account for a …

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Experiences And Enlightenment Of International Cooperation On Climate Change For Bri Partners, Jianping Zhang, Xu Zhang Sep 2023

Experiences And Enlightenment Of International Cooperation On Climate Change For Bri Partners, Jianping Zhang, Xu Zhang

Bulletin of Chinese Academy of Sciences (Chinese Version)

The Belt and Road region has different resource endowments and diverse climates. Low-carbon and sustainable economic development is the objective need for the high-quality Green Silk Road, and it is also the key to the global actions and practices on climate change. China and BRI partners have carried out in-depth cooperation on low-carbon infrastructure, cleaner energy, climate disaster warning and forecasting, climate finance, low-carbon technology, and other key development fields in a win-win solution. Further, by drawing on the valuable experiences of developed countries in international cooperation on climate, the others have explored a new path for future international cooperation …

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Approaches To Assessing Nutrient Coupling In Open Ocean Datasets, James M. Moore, Claire P. Till Sep 2023

Approaches To Assessing Nutrient Coupling In Open Ocean Datasets, James M. Moore, Claire P. Till

IdeaFest: Interdisciplinary Journal of Creative Works and Research from Cal Poly Humboldt

Nutrient coupling describes a process where the biogeochemical cycles of two elements are linked by being incorporated similarly into biomass. This paper uses data from the GEOTRACES GP16 cruise (Eastern Pacific Zonal Transect) to investigate the relationship between certain macronutrients generally coupled to trace elements in terms of their oceanic distributions with the notable exception of in an oxygen minimum zone: cadmium-phosphate and zinc-silicate. There are many methods applied to oceanographic data to correlate analyte concentrations; while they are often presented independently in literature, here we attempt to use them in conjunction for a more thorough interpretation. By compiling 1) …

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2023 September 14 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University Sep 2023

2023 September 14 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University

Tennessee Climate Office Weekly Drought Summaries

No abstract provided.

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Managing Fires And Ecosystems Indigenous Fire Ecologies Session_Greenhouse Gas Emissions From Wildland Fires Workshop, Cynthia Twyford Fowler Sep 2023

Managing Fires And Ecosystems Indigenous Fire Ecologies Session_Greenhouse Gas Emissions From Wildland Fires Workshop, Cynthia Twyford Fowler

Faculty Scholarship

No abstract provided.

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2023 September 7 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University Sep 2023

2023 September 7 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University

Tennessee Climate Office Weekly Drought Summaries

No abstract provided.

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Reaction Steps In Heterogeneous Photocatalytic Oxidation Of Toluene In Gas Phase—A Review, Yerzhigit Tulebekov, Zhandos Orazov, Bagdat Satybaldiyev, Daniel D. Snow, Raphaël Schneider, Bolat Uralbekov Sep 2023

Reaction Steps In Heterogeneous Photocatalytic Oxidation Of Toluene In Gas Phase—A Review, Yerzhigit Tulebekov, Zhandos Orazov, Bagdat Satybaldiyev, Daniel D. Snow, Raphaël Schneider, Bolat Uralbekov

Nebraska Water Center: Faculty Publications

A review of the current literature shows there is no clear consensus regarding the reaction mechanisms of air-borne aromatic compounds such as toluene by photocatalytic oxidation. Potential oxidation reactions over TiO2 or TiO2-based catalysts under ultraviolet and visible (UV/VIS) illumination are most commonly considered for removal of these pollutants. Along the pathways from a model pollutant, toluene, to final mineralization products (CO2 and H2O), the formation of several intermediates via specific reactions include parallel oxidation reactions and formation of less-reactive intermediates on the TiO2 surface. The latter may occupy active adsorption sites and …

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How Is Flash Drought Understood?—Experts’ Definitions And Decision-Makers’ Perceptions, Caily Schwartz, Tonya Haigh, Mark D. Svoboda, Madeline Goebel Sep 2023

How Is Flash Drought Understood?—Experts’ Definitions And Decision-Makers’ Perceptions, Caily Schwartz, Tonya Haigh, Mark D. Svoboda, Madeline Goebel

Drought Mitigation Center: Faculty Publications

Because flash drought is a relatively new phenomenon in drought research, defining the concept is critical for scientists and decision-makers. Having detrimental impacts on many sectors, it is important to have a consistent definition and understanding of flash drought, between experts and stakeholders, to provide early warning to the community. This study focuses on onset and progression of conditions and demonstrates the difference in flash drought identification for 15 events across six quantitative definitions of flash drought that use the U.S. Drought Monitor (USDM). Five flash drought events have been studied in the literature while 10 additional events have been …

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2023 September - Tennessee Monthly Climate Report, Tennessee Climate Office, East Tennessee State University Sep 2023

2023 September - Tennessee Monthly Climate Report, Tennessee Climate Office, East Tennessee State University

Tennessee Climate Office Monthly Report

No abstract provided.

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Climate Stories: South Carolina, Volume 1, Kaelyn Emon, Emily Arnold, Samantha Carter, Hayden Jones, Sarah Owens, Noel A. Tufts, Tiana White, Laura Barbas Rhoden, Christine S. Dinkins Sep 2023

Climate Stories: South Carolina, Volume 1, Kaelyn Emon, Emily Arnold, Samantha Carter, Hayden Jones, Sarah Owens, Noel A. Tufts, Tiana White, Laura Barbas Rhoden, Christine S. Dinkins

Community Based Research

In this volume, you will hear from South Carolina residents about how they have been sensing climate change throughout their lifetimes. All stories have been anonymized with the use of pseudonyms, except where participants asked for their story to be associated with their name.

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Uncertainties In Retrieval Of Remote Sensing Reflectance From Ocean Color Satellite Observations, Eder I. Herrera Estrella Sep 2023

Uncertainties In Retrieval Of Remote Sensing Reflectance From Ocean Color Satellite Observations, Eder I. Herrera Estrella

Dissertations, Theses, and Capstone Projects

Ocean Color radiometry uses remote sensing to interpret ocean dynamics by retrieving remote sensing reflectance (𝑅𝑟𝑠) from satellite imagery at different scales and over different time periods. 𝑅𝑟𝑠 spectrum characterizes the ocean color that we observe, and from which we can discern concentrations of chlorophyll, organic and inorganic particles, and carbon fluxes in the ocean and atmosphere. 𝑅𝑟𝑠 is derived from the total radiance at the top of the atmosphere (TOA). However, it only represents up to ten percent of the total signal. Hence, the retrieval of 𝑅𝑟𝑠 from the total radiance at TOA involves the application of atmospheric correction …

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Evaluation And Description Of Nature-Based Engineering Stream Restoration Through Dutton Shadyside Park, Julie Wildschut, Andrea Lubberts, David P. Warners, Haley Weesies Sep 2023

Evaluation And Description Of Nature-Based Engineering Stream Restoration Through Dutton Shadyside Park, Julie Wildschut, Andrea Lubberts, David P. Warners, Haley Weesies

Faculty and Professional Research

As land uses change over time, from wetlands and forests to agricultural fields, suburban neighborhoods, and commercial areas, stormwater runoff increases in volume and moves more rapidly into nearby streams. This altered hydrology conveys pollutants directly to local waterways and increases erosion, resulting in deeply entrenched channels with steep banks lacking vegetation. Plaster Creek, located near Grand Rapids, MI, is an example of such an impaired stream, having become channelized and separated from adjacent floodplain habitat along much of its 26-mile length. As part of a Michigan EGLE 319 grant, Plaster Creek Stewards, an initiative of Calvin University, used nature-based …

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2023 August 31 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University Aug 2023

2023 August 31 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University

Tennessee Climate Office Weekly Drought Summaries

No abstract provided.

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The Irrigation Efficiency Trap: Rational Farm-Scale Decisions Can Lead To Poor Hydrologic Outcomes At The Basin Scale, Christina N. Morrisett, Robert W. Van Kirk, London O. Bernier, Andrea L. Holt, Chloe B. Perel, Sarah E. Null Aug 2023

The Irrigation Efficiency Trap: Rational Farm-Scale Decisions Can Lead To Poor Hydrologic Outcomes At The Basin Scale, Christina N. Morrisett, Robert W. Van Kirk, London O. Bernier, Andrea L. Holt, Chloe B. Perel, Sarah E. Null

Watershed Sciences Faculty Publications

Agricultural irrigation practices have changed through time as technology has enabled more efficient conveyance and application. In some agricultural regions, irrigation can contribute to incidental aquifer recharge important for groundwater return flows to streams. The Henrys Fork Snake River, Idaho (United States) overlies a portion of the Eastern Snake Plain Aquifer, where irrigated agriculture has occurred for over a century. Using irrigator interviews, aerial and satellite imagery, and statistical streamflow analysis, we document the impact of farm-scale decisions on basin-scale hydrology. Motivated to improve economic efficiency, irrigators began converting from surface to center-pivot sprinkler irrigation in the 1950s, with rapid …

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2023 August 24 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University Aug 2023

2023 August 24 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University

Tennessee Climate Office Weekly Drought Summaries

No abstract provided.

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The Patchwork Governance Of Ecologically Available Water: A Case Study In The Upper Missouri Headwaters, Montana, United States, Amanda E. Cravens, Julia B. Goolsby, Theresa Jedd, Deborah J. Bathke, Shelley Crausbay, Ashley E. Cooper, Jason Dunham, Tonya Haigh, Kimberly R. Hall, Michael J. Hayes, Jamie Mcevoy, Rebecca L. Nelson, Markéta Poděbradská, Aaron Ramirez, Elliot Wickham, Dionne Zoanni Aug 2023

The Patchwork Governance Of Ecologically Available Water: A Case Study In The Upper Missouri Headwaters, Montana, United States, Amanda E. Cravens, Julia B. Goolsby, Theresa Jedd, Deborah J. Bathke, Shelley Crausbay, Ashley E. Cooper, Jason Dunham, Tonya Haigh, Kimberly R. Hall, Michael J. Hayes, Jamie Mcevoy, Rebecca L. Nelson, Markéta Poděbradská, Aaron Ramirez, Elliot Wickham, Dionne Zoanni

Drought Mitigation Center: Faculty Publications

Institutional authority and responsibility for allocating water to ecosystems (“ecologically available water” [EAW]) is spread across local, state, and federal agencies, which operate under a range of statutes, mandates, and planning processes. We use a case study of the Upper Missouri Headwaters Basin in southwestern Montana, United States, to illustrate this fragmented institutional landscape. Our goals are to (a) describe the patchwork of agencies and institutional actors whose intersecting authorities and actions influence the EAW in the study basin; (b) describe the range of governance mechanisms these agencies use, including laws, policies, administrative programs, and planning processes; and (c) assess …

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Progress And Development Suggestions For Psychological Research On Climate Change, Yan Sun, Xuefeng Chen, Yuanchao Gong, Jianchi Tian, Zeyu Ji, Yang Li, Hongyan Guo, Jin Han, Linxiu Zhang Aug 2023

Progress And Development Suggestions For Psychological Research On Climate Change, Yan Sun, Xuefeng Chen, Yuanchao Gong, Jianchi Tian, Zeyu Ji, Yang Li, Hongyan Guo, Jin Han, Linxiu Zhang

Bulletin of Chinese Academy of Sciences (Chinese Version)

The public's psychological reactions to climate change, including cognition, attitude, emotions, and affects, are important psychological antecedents to their participation in the mitigation of and adaptation to climate change crisis. As a result, tracking, monitoring, and learning about these individuals' psychological reactions to climate change would lay the foundation for climate change education, mass media communication, and successful implementation of climate policies. The current study systematically summarizes the multi-dimensional factors influencing individuals' psychological reactions to climate change, and proposes suggestions for the development of psychological research on climate change and for climate actions. Hopefully, this study would raise the awareness …

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The Upper Ocean At The End Of An Ice Age: Using Proxies In Benthic Foraminifera To Investigate Intermediate Water Changes During The Last Glacial Termination, Cassandre R. Stirpe Aug 2023

The Upper Ocean At The End Of An Ice Age: Using Proxies In Benthic Foraminifera To Investigate Intermediate Water Changes During The Last Glacial Termination, Cassandre R. Stirpe

Electronic Theses and Dissertations

The ocean is an important component of the global climate system and plays a key role as a storage reservoir for heat and carbon. Under glacial conditions, the ocean sequestered carbon from the atmosphere, contributing to a cooler global climate. During the last glacial termination, that carbon was released back into the atmosphere, but the exact timing and mechanisms of this transfer are still not fully understood. This study examines waters from the intermediate depths of the Southern Ocean to gain insight into deglacial processes. Intermediate waters are capable of reacting to climate change on decadal timescales, making them a …

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Investigating Mercer's Paradox: A 10be Chronology Of Moraines Deposited During The Last Glaciation At Soda Lake, Wind River Range, Wyoming, U.S.A., Lauren M. Woods Aug 2023

Investigating Mercer's Paradox: A 10be Chronology Of Moraines Deposited During The Last Glaciation At Soda Lake, Wind River Range, Wyoming, U.S.A., Lauren M. Woods

Electronic Theses and Dissertations

Here I use geomorphic mapping and 10Be surface-exposure dating to address the paradox that lies within the general understanding of the mechanisms driving ice-age climate and glacial cycles. The long-standing and widely accepted Murphy-Milankovitch hypothesis suggests glacial cycles are controlled by the local intensity of summer-time insolation. By this hypothesis, glacier maxima should be achieved at times of low insolation intensity and asynchronously between the polar hemispheres, a pattern which is inconsistent with the glacial geomorphic record. The 10Be chronology I have constructed of moraines at Soda Lake, Wind River Range, Wyoming, U.S.A. shows nine glacial advances to …

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Wave Attenuation Through Submerged Oyster Aquaculture Cages, Liam T. Hanley Aug 2023

Wave Attenuation Through Submerged Oyster Aquaculture Cages, Liam T. Hanley

Electronic Theses and Dissertations

Coastal erosion presents a growing issue to shorelines around the world and is especially harmful to Maine, a region where sea-level rise is higher than the global average. Green and hybrid coastal defense strategies are being implemented around the country to provide sustainable, habitat-friendly solutions to erosion control. Maine is a hotspot for commercial aquaculture, with an estimated $13.6 million economic impact. This study looks to bridge the gap between Maine aquaculture and the living shorelines initiative, by determining the wave attenuating properties of submerged oyster cages. The project will be able to inform local oyster farmers, resource planners, and …

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Collaborative And Engaged Research To Strengthen Equity And Adaptive Governance In Co-Managed Fisheries, Gabrielle V. Hillyer Aug 2023

Collaborative And Engaged Research To Strengthen Equity And Adaptive Governance In Co-Managed Fisheries, Gabrielle V. Hillyer

Electronic Theses and Dissertations

Small-scale, co-managed fisheries are found throughout the world and often represent intertwining cultures, societies, communities, economies, institutions, and governments. They face complex issues, derived from ecological and social sources. Solving these issues requires diverse expertise, often developed through engaged methodologies which can facilitate collaborative solution creation between researchers, community members, and others. In this dissertation, I demonstrate the benefits of these engaged methodologies and review how they, when coupled with anticolonial approaches to research, can create more equitable solutions to complex issues. This dissertation focuses on multiple projects within the wild clam fishery in Maine including: (1) the creation of …

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The Response Of The Zooplankton Community In The Western Gulf Of Maine To A Shift In Oceanographic Conditions: 2005-2017, Emma Cecile Dullaert Aug 2023

The Response Of The Zooplankton Community In The Western Gulf Of Maine To A Shift In Oceanographic Conditions: 2005-2017, Emma Cecile Dullaert

Electronic Theses and Dissertations

The Gulf of Maine (GoM) harbors a productive ecosystem that supports a wide variety of marine life, providing services upon which local communities rely. The GoM ecosystem supports many important commercially harvested species, including the American lobster (Homerus americanus) which is the most valuable fishery in the US, Atlantic herring (Clupea harengus) and a variety of groundfish. The GoM is also home to the critically endangered North Atlantic right whale (Eubalaena glacialis), which has historically been known to feed in the eastern GoM and Bay of Fundy during the summer and fall months. In …

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2023 August 17 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University Aug 2023

2023 August 17 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University

Tennessee Climate Office Weekly Drought Summaries

No abstract provided.

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Nalidarturbopauseshear, Titus Yuan Aug 2023

Nalidarturbopauseshear, Titus Yuan

Browse all Datasets

The USU Na lidar has been upgraded to be able to measure temperature and winds in the lower thermosphere up to ~ 115 km routinely. The new capability, coupled with the existing nightglow instruments at USU, enables the investigation of the extreme large wind and shears in this region and their correlation to the atmospheric gravity waves activities in the upper mesosphere.

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Florida's Vanishing Heritage: Climate Risk And Adaptation At Florida Heritage Sites, Levi Watson Aug 2023

Florida's Vanishing Heritage: Climate Risk And Adaptation At Florida Heritage Sites, Levi Watson

Electronic Theses and Dissertations, 2020-2023

This thesis examines history and preservation at coastal cultural heritage sites threatened by climate change and explores climate adaptation strategies at two sites on Florida's Atlantic coast. Current climate change models indicate the planet may see as much as 1.1 meters, or four feet, of global average sea level rise by the year 2100, requiring site managers to intervene by using adaptation techniques to improve resilience and guard against the loss of cultural heritage monuments. Understanding the history and importance of these sites to the surrounding communities and their numerous stakeholders is the first step to ensuring these sites remain …

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Measures And Models Of Visual Acuity In Epipelagic And Mesopelagic Teleosts And Elasmobranchs, Eleanor M. Caves, Tracey Sutton, Eric J. Warrant, Sönke Johnsen Aug 2023

Measures And Models Of Visual Acuity In Epipelagic And Mesopelagic Teleosts And Elasmobranchs, Eleanor M. Caves, Tracey Sutton, Eric J. Warrant, Sönke Johnsen

Marine & Environmental Sciences Faculty Articles

Eyes in low-light environments typically must balance sensitivity and spatial resolution. Vertebrate eyes with large "pixels" (e.g., retinal ganglion cells with inputs from many photoreceptors) will be sensitive but provide coarse vision. Small pixels can render finer detail, but each pixel will gather less light, and thus have poor signal relative-to-noise, leading to lower contrast sensitivity. This balance is particularly critical in oceanic species at mesopelagic depths (200–1000 m) because they experience low light and live in a medium that significantly attenuates contrast. Depending on the spatial frequency and inherent contrast of a pattern being viewed, the viewer’s pupil size …

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