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Full-Text Articles in Physical Sciences and Mathematics

Greenhouse Gas Exchanges With Temperate Grassland Systems, S C. Jarvis, D J. Hatch, G J. Dollard Sep 2024

Greenhouse Gas Exchanges With Temperate Grassland Systems, S C. Jarvis, D J. Hatch, G J. Dollard

IGC Proceedings (1993-2023)

Preliminary studies are described which examine the fluxes of two important greenhouse gases from grassland systems, In the first, effects of different slurry application methods to a peat soil on the emission of N2O were examined. All methods resulted in a significant release of N20 at rates which varied with treatment, time and environmental conditions. The greatest rates of denitrification occurred with acidified slurry under wet conditions: this however, produced the lowest proportion of losses as N2O, In the second study, changes in CH4 concentration above a grazed sward were measured and indicated a definite positive flux from the system …


Simulating The Impact Of Global Warming On Regional Pasture Production Environment, P J. Vickery, M J. Hill, E P. Furnival Sep 2024

Simulating The Impact Of Global Warming On Regional Pasture Production Environment, P J. Vickery, M J. Hill, E P. Furnival

IGC Proceedings (1993-2023)

Global warming scenarios predict increases in temperatures, evaporation and summer rainfall in the northern two-thirds of Australia. Pasture production models can be combined with spatial climate data in a geographic information system to predict net primary production from pastures. We used a pasture-sheep production model for a phalaris-white clover pasture together with interpolated climatic data to predict the outcome of increases in temperature, evaporation and summer rainfall for net primary production (NPP) from pastures in northern NSW. NPP was predicted to rise in winter due to elevated temperatures, to decline slightly In spring due to increased evaporation, and to change …


Climate Change And Variability: Impacts On New Zealand Pastures, M J. Salinger, A S. Porteous Sep 2024

Climate Change And Variability: Impacts On New Zealand Pastures, M J. Salinger, A S. Porteous

IGC Proceedings (1993-2023)

Climate change and variability influence the productivity and distribution of New Zealand pasture species. Temperature and rainfall scenarios are used to explore the sensitivity of New Zealand pastures to potential climate warming next century. Temperature affects the length of the growing season with present pasture species extending 200 m higher in altitude for every 1 •c temperature increase. The greater area of New Zealand that becomes frost free allows the spread of subtropical pasture grasses southwards. However, where low rainfall limits pasture production, changes to the rainfall amount have a significant effect. A rainfall change of I 0% changes the …


Sustainable Transportation: Transforming Utah Through Community Action, Isabella Erwin, Kendall Becker, Patrick A. Singleton, Scott Hotaling Aug 2024

Sustainable Transportation: Transforming Utah Through Community Action, Isabella Erwin, Kendall Becker, Patrick A. Singleton, Scott Hotaling

All Current Publications

Transportation in the United States accounts for 4% of global greenhouse gas emissions. Over half of these emissions come from on-road vehicles. Nationwide, Utah has the third highest rate of car ownership, and the resulting air pollution from on-road vehicles has significant implications for the climate and public health. This fact sheet provides information on how Utah’s government and other entities are working to expand modes of transport that minimize harm to communities and the environment.


Using Recycled Materials Towards Sustainable, Eco-Friendly Building In Hot Regions – A Review, Mai W. Madkour Hosny A. Dewer, And Shaimaa M. Refaat Jul 2024

Using Recycled Materials Towards Sustainable, Eco-Friendly Building In Hot Regions – A Review, Mai W. Madkour Hosny A. Dewer, And Shaimaa M. Refaat

Journal of Engineering Research

Due to population growth and increased urban activity, there is a rise in waste production, which poses health and environmental risks. Additionally, the extraction and transportation of natural resources to places of employment require significant energy consumption, and the world has therefore moved to seek new alternatives away from traditional construction methods by recycling building materials such as concrete, brick, glass, wood, etc., or using new building materials such as rice straw, plastics, corks, etc., taking into account architectural design. The research is aimed at demonstrating that recycled materials have the potential to perform a better environmental performance by preserving …


A Comparative Analysis In Energy Efficiency In Buildings To Support Clean Energy Transitions In Architecture, Nourhane M. El-Haridi Jul 2024

A Comparative Analysis In Energy Efficiency In Buildings To Support Clean Energy Transitions In Architecture, Nourhane M. El-Haridi

Journal of Engineering Research

Over the past few decades, there has been a growing recognition of the importance of energy efficiency policies in designing buildings for supporting clean energy transitions. Buildings account for a significant share of global energy consumption and greenhouse gas emissions, and improving their energy efficiency in the design phase can reduce energy use and emissions, while also providing numerous other benefits such as cost savings, improved comfort and health, and job creation. Many countries have already implemented energy efficiency policies in buildings, such as building codes, standards, labeling schemes, and financial incentives in addition to governmental regulations. Since the governments …


Artificial Carbon Sequestration In Utah, Signee Storrud, Kendall Becker, Scott Hotaling Jul 2024

Artificial Carbon Sequestration In Utah, Signee Storrud, Kendall Becker, Scott Hotaling

All Current Publications

Carbon dioxide is an important greenhouse gas that helps keep Earth warm and habitable. But since humans began burning large quantities of fossil fuels during the Industrial Revolution, there has been a rapid increase in atmospheric carbon dioxide from approximately 280 parts per million in 1750 to more than 420 parts per million in 2024. Natural carbon storage processes have been unable to keep up with humans’ carbon dioxide emissions, and the sudden rise in atmospheric carbon dioxide has led to rapid global warming and climate change. One climate adaptation tool that may help rebalance Earth’s carbon cycle is artificial …


Using Empathy To Shift Climate Change Attitudes., Carson Haller May 2024

Using Empathy To Shift Climate Change Attitudes., Carson Haller

Crop, Soil and Environmental Sciences Undergraduate Honors Theses

It has shifted from a hunch to an existential threat, it is a harbinger of disaster and bankruptcy, backed by science, and yet a considerable portion of Americans still believe that climate change is a hoax. It is becoming increasingly imperative to convince this portion to join the fight. It has been found that empathy is an effective method of persuasion, prompting the question of whether empathy could be used shift climate change attitudes. The hypothesis of this study was that if a person feels empathy for somebody harmed by the effects of climate change, they will be more willing …


Last Millennium Hurricane Activity Linked To Endogenous Climate Variability, Wenchang Yang, Elizabeth Wallace, Gabriel A. Vecchi, Jeffrey P. Donnelly, Julien Emile-Geay, Gregory J. Hakim, Larry W. Horowitz, Richard M. Sullivan, Robert Tardif, Peter J. Van Hengstum, Tyler S. Winkler Jan 2024

Last Millennium Hurricane Activity Linked To Endogenous Climate Variability, Wenchang Yang, Elizabeth Wallace, Gabriel A. Vecchi, Jeffrey P. Donnelly, Julien Emile-Geay, Gregory J. Hakim, Larry W. Horowitz, Richard M. Sullivan, Robert Tardif, Peter J. Van Hengstum, Tyler S. Winkler

OES Faculty Publications

Despite increased Atlantic hurricane risk, projected trends in hurricane frequency in the warming climate are still highly uncertain, mainly due to short instrumental record that limits our understanding of hurricane activity and its relationship to climate. Here we extend the record to the last millennium using two independent estimates: a reconstruction from sedimentary paleohurricane records and a statistical model of hurricane activity using sea surface temperatures (SSTs). We find statistically significant agreement between the two estimates and the late 20th century hurricane frequency is within the range seen over the past millennium. Numerical simulations using a hurricane-permitting climate model suggest …