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 14 of 14 for “"air quality modeling"”.
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Employment of Multi-Source Satellite-Based Observations in Air Quality Modeling over Asia
… to improving the reliability of Asia’s air quality simulations and contribute to methodological advances in this field. In Chapter 1, I sequentially constrained the inventoried estimates of East Asia’s nitrogen oxides (NOx) and primary particulate matter (PM) emissions to improve model …
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Leveraging Street View and Remote Sensing Imagery to Enhance Air Quality Modeling through Computer Vision and Machine Learning
Air pollution is associated with various adverse health impacts and is identified as one of the leading risk factors for global disease burden. Further, air pollution is one of the pathways through which climate change could negatively impact health. Field studies have shown that air pollution has …
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A Diverse and Comprehensive Air Quality Modeling Analysis of Houston, Texas: How Will Changing Emissions, Industries, and Legislation Impact the Air and Human Health?
This dissertation utilizes air quality models to assess drivers of pollution in Houston, Texas, where air quality poses a significant risk to human health. This research focuses on how factors like emissions from the energy sector, Houston Ship Channel (HSC) activity, and evolving legislation …
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Land-atmosphere Exchange and Air Quality during Stable Atmospheric Boundary Layer Events
Elevated air pollution concentrations have been observed under conditions with stable atmospheric boundary layers. The multiday stagnant meteorological conditions, especially the vertical structure of the atmospheric boundary layer (ABL) below 1 km in the atmosphere, have been notoriously difficult …
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Future trends in local air quality impacts of aviation
… estimate the health impacts of aviation-related air pollution. The model follows an impact pathway approach based on a review of the best practices for air quality policy-making in Europe and the United States. This model is used to develop the Air Quality Module within the Benefits Valuation …
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Emissions From Concentrated Animal Feeding Operations During Wet and Dry Periods in the Southeastern United States
<p>Air quality modeling is a recent development in atmospheric science 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 …
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An air pollution model for complex terrain
A dynamic air quality modeling system is presented for use in regions of complex terrain. It consists of two pre-processors and the air quality model. TERRAIN is the terrain analysis preprocessor. It accepts as input digitized terrain elevation data and analyses it in terms of the orientation and …
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Characterization of Urban Air Pollutant Emissions by Eddy Covariance using a Mobile Flux Laboratory
Air quality management strategies in the US are developed largely from estimates of emissions, some highly uncertain, rather than actual measurements. Improved knowledge based on measurements of real-world emissions is needed to increase the effectiveness of these strategies. Consequently, the …
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Unraveling atmospheric physics and chemistry of long-range transport of pollutants: Development of novel tools and methods
… region or continent can significantly affect the air quality downwind, information about LRT must be reliable. In the first chapter of this dissertation, we introduce a semi-Lagrangian chemical transport model to verify the direct source-receptor link of pollution during LRT. To validate the …
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Improvement of MM5 Model Forecast by Ingesting Newly Archived Satellite Data and Estimation of Forest Fire Emissions Contribution to Ozone Peaks Using CMAQ Modeling System
Meteorological and air quality modeling present many challenges in regards to accuracy and verification. This dissertation focuses on three major challenges and provides a discussion of the modeling results. The Fifth-Generation Penn State University-National Center for Atmospheric Research (NCAR) …
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Development Of A Graphical User Interface For Cal3qhc Called Calqcad
One of the major sources of air pollution in the United States metropolitan areas is due to automobiles. With the huge growth of motor vehicles and, greater dependence on them, air pollution problems have been aggravated. According to the EPA, nearly 95% of carbon monoxide (CO ) (EPA 1999) in urban …
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Uncertainty Quantification and Uncertainty Reduction Techniques for Large-scale Simulations
Modeling and simulations of large-scale systems are used extensively to not only better understand a natural phenomenon, but also to predict future events. Accurate model results are critical for design optimization and policy making. They can be used effectively to reduce the impact of a natural …
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Modeling the effect of the energy crisis on air quality in the Po Valley, Italy.
… investigates the impact of the energy crisis on air quality in the Po Valley, Italy, with a focus on the effect of changes in methane consumption over the potential changes in wood burn ing consumption. The study employs the WRF-CHIMERE model to simulate the consequences of varying wood burning …