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 12 of 12 for “"surface emissions"”.
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Field Emissions of Methane and Nitrous Oxide from California Landfills
… representative California landfills to quantify emissions of methane and nitrous oxide. Landfills are highly engineered; however, they are one of the largest anthropogenic sources of greenhouse gases, causing human health and safety concerns. Methane (CH<sub>4</sub>) and nitrous oxide …
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Modeling study of air pollution in the Mexico City area
… in the all sites. (2) the diurnal variations of surface emissions play an important role in controlling the O3 concentrations in the MC area, and also in the downwind suburb area. The daytime O3 concentrations are sensitive to emissions of NOx and VOCs in the morning, increase in daytime O3 …
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Flugzeugmessungen von NO, NOy, CO und O3 in der freien Troposphäre zwischen 60 °N und 60 °S - Nord-Süd-Kontrast und Verteilung in den Tropen
… in cirrus properties due to anthropogenic emissions). Major deployment sites were Punta Arenas, Chile (53°S) and Prestwick, Scotland (55°N). In addition, the meridional distribution of trace gases measured during the transfer flights between Germany and Chile were analysed for latitudes …
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Determination and control of some pollutants in indoor environments
… air quality (IAQ) may result from polluting emissions that are spread from building materials such as volatile organic compounds (VOCs) and/or microbial components or from various kinds of human activity such as smoking. Different methods are available to limit the exposure to unwanted …
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Emissions From Concentrated Animal Feeding Operations During Wet and Dry Periods in the Southeastern United States
… dedicated to simulating the characteristics of surface emissions within the context of a variety of meteorological conditions. In western Kentucky, there are several concentrated animal feeding operations (CAFOs) that emit a variety of gases, including sulfur dioxide (SO<sub>2</sub>). The …
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Estimation of methane and carbon dioxide surface fluxes using a 3-D global atmospheric chemical transport model
… currently exist. We estimate global methane surface emissions between 1996 and 2001, using a top-down approach that combines observed and simulated atmospheric CH₄ concentrations. As a secondary study, we describe our participation in a CO₂ inverse-modeling intercomparison. The available …
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Human health impacts of high altitude emissions
… are attributed annually to exposure degraded surface air quality and UV-induced skin cancer. However, the focus has been on surface emissions, and the contribution of high altitude emissions to these issues is rarely examined. In this thesis, potential links are investigated between high …
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Quantifying emissions of greenhouse gases from South Asia through a targeted measurement campaign
… mitigation and policy initiatives. Quantifying emissions using inverse approaches at the national scale requires measurements that specifically target the region of interest. Primarily due to the lack of atmospheric measurements from the region, emissions estimates of these greenhouse gases from …
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Experimental studies of the electrothermal instability using electrically thick, coated metal
… of the ETI. Benefiting from this longevity, the surface emissions from the exploding metal are imaged through the transparent dielectric. These images may be converted to temperature maps of the emitting metal, and Fourier analysis of a sequence of such images shows discrete …
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An Investigation of Local and Regionally Significant Non-Agricultural Sources of Ammonia in Toronto and the Great Lakes Region
… sources, urban greenspace and lacustrine emissions in the atmospheric loading of NH3(g) in the urban atmosphere.During three intensive field campaigns (FROST, THE CIX, SWAPIT), other atmospheric measurements were available to support the interpretation of the variability in NH3(g). These …
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Ground- and satellite-based observations of column nitrogen dioxide: instrument performance, column-to-surface relationships, and the role of meteorology in coastal urban environments
… lifetime, and the limited spatial extent of surface monitoring networks. In lieu of comprehensive surface monitoring, space-based retrievals of NO2 abundance may address gaps in our understanding of its spatiotemporal variability. Space-based observations of NO2, however, have …
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Measurement and deduction of emissions of short-lived atmospheric organo-chloride compounds
… Now that controls have been put in place to curb emissions of longer lived halocarbons through the Montreal Protocol, and speculation about the safety of many short-lived chlorinated organic molecules has been raised, there has been more consideration given to the efforts aimed at determining the …