Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"Methane Emission"”.
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Methane Emission Monitoring of Appalachian Compressor Station
… line network was monitored for fugitive methane emissions to quantify long-term emissions in Appalachia Virginia. Continuous monitoring was conducted from January 2021 to April 2021. The compressor station undergoing monitoring operated two CAT3516 Tale and one CAT3516 B engines operating …
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Assessment of methane emission traits in Canadian Holstein cows
Enteric methane production from ruminants represents a loss of productive energy and contributes to greenhouse gas emissions. This thesis presents a phenotypic data description and genetic parameter estimates of three methane emission traits (methane production, yield, and intensity) in Canadian …
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Evaluation, Prediction, and Monitoring of Methane Emission from Oil and Gas Development
… experiencing man-made climate change due to the emission of greenhouse gases, among which methane is a highly potent one, with a 20-year global warming potential 80 times higher than that of carbon dioxide. A systematic approach is needed to evaluate, monitor, and mitigate methane emissions such …
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Assessing the relationship between soil reduction and methane emission in Texas rice fields
Reduction processes and methane emissions have been observed in six rice fields along a sand-clay-silt gradient for one growing season. Variations in reduction processes occurred by depth and upon field draining, as well as among fields of differing soil sand content. Analysis at four 2.5 …
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Advancing Measurement Techniques and Methods to Improve Methane Emission Estimates from Urban Natural Gas Infrastructure and Inform Mitigation
Methane (CH4) is a potent short-lived climate forcer (SLCF), and atmospheric concentrations continue to increase despite more attention globally on reducing emissions. This underscores the need to expand mitigations of anthropogenic sources, which empirical measurements can help guide. Urban areas …
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Technologies and Methodologies to Improve Methane Emission Reporting in Natural Gas Distribution Networks within the UNEP OGMP2.0 Reporting Framework
L'abstract è presente nell'allegato / the abstract is in the attachment
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Exchange of radiatively active trace gases in tundra environments, with particular attention to methane
… environments, the main subject of study being methane. Methane emission from tundra soils has in recent years attracted increasing attention due to the possible associated feed-back effect on man-made climate change. The presented data are primarily produced. during field work in Northern …
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Missing methane: Machine learning for satellite remote sensing of methane
… change, brought on by decades of anthropogenic emission of greenhouse gases into our atmosphere. The increased abundance of greenhouse gases like carbon dioxide and methane has warmed our planet dramatically above pre-industrial levels. Rising global temperatures lead to increasingly frequent …
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A global study of tropospheric methane chemistry and emissions
Methane is the second most important greenhouse gas after CO2 and affects atmospheric temperatures directly and indirectly. Through its chemical loss in the atmosphere, methane also influences tropospheric ozone concentrations, a major air polluter. Experiments have been performed with a …
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Carbon budget of a drained peatland in Western Iceland and initial effects of rewetting
… rewetting is a possible method for reducing emissions within the Kyoto Protocol´s second commitment period. This study examined the carbon fluxes from an uncultivated drained peatland in Iceland and estimated the annual CO2 budget. During the research period the site was rewetted and initial …
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The sale and shipment of coal
… of spontaneous healing, combustion and methane emission from coal cargoes, will be discussed, and the F.O.B. sales of coal will be commented upon.
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Modification and evaluation of a ruminant emission measurement system for assessing cattle metabolism
… indication of metabolic performance. A Ruminant Emission Measurement System (REMS) was initially constructed to measure methane emission from cattle, and is located at the Beef Cattle and Sheep Field Laboratory, the University of Illinois at Urbana-Champaign. REMS was modified to expand the …
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Investigating the ecological controls on methane production in a riparian cottonwood forest and adjacent river
… communities and their metabolic processes of methane production in the Oldman River sediment and adjacent riparian cottonwood tree stems in southern Alberta. Carbon (C) and nitrogen (N) content in tree stems and river sediment environments were measured, while molecular genetic techniques and …
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Application of Background Oriented Schlieren (BOS) in Underground Mine Ventilation
… data about airflows in complex areas and methane emissions from coal. The acquisition of such data would not only enhance the understanding of mine ventilation but also improve the accuracy of ventilation surveys. As an example, surveys can benefit from small scale BOS investigations …
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Quantifying the Impact of Seismic Lines on Methane Release in a Treed Bog Ecosystem using Unmanned Aerial Vehicles (UAVs)
… ecosystems, capable of releasing vast amounts of methane in response to disturbance events. To date, little advancement has been made by researchers to quantify the impact of small-scale anthropogenic disturbances on these ecosystems, specifically seismic lines. These “low-impact” linear features …
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Development of a method for estimating methane gas emissions at high resolution
Methane is the second most important anthropogenic greenhouse gas, with a radiative warming of 0.97 [0.74-1.20] W m-2 (Stocker et al., 2013a) and a global warming potential of 21 times that of CO2 over a 100 year timescale (Reay et al., 2010). Its significance to climate change is significant …
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The use of shaped explosive charges to investigate permeability, penetration, and fracture formation in coal, dolomite and plexiglas
"The concentration of methane gas which exists in the exhaust air from a coal mine is critical. It can be controlled by dilution of the gas with fresh air or by the regulation of the rate of methane emission into the mine workings. Degasification techniques which control the emission rate are …
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Characterizing methane emissions on oil and gas sites
Reducing methane emissions from the oil and gas sector is a key component of short-term climate action, and emission reduction efforts in this sector are increasingly driven by measurements at the individual facility scale. This thesis introduces a number of inversion techniques that use methane …
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Detecting Methane Anomalies from Satellite Data in the Arctic
… climate crisis is fueled by greenhouse gas emissions. Right after carbon dioxide the second most powerful anthropogenic greenhouse gas is methane. Relevant and reliable information about the sources and sinks of methane is needed to mitgate climate change and its effects. This is …
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The role of agricultural intensification in modulating ecosystem properties of embedded subtropical wetlands
… and are the largest global emitters of biogenic methane to the atmosphere. The unique nature of wetland ecosystems cater to an extensive diversity of microorganisms – essential regulators of biogeochemical and ecosystem-level processes including the production of methane. However, wetlands reside …
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