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 “"Atmospheric dispersion"”.
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Fluctuating concentrations in atmospheric dispersion
… concentration measurements from a series of atmospheric dispersion experiments conducted under both unstable and stable meteorological conditions. The experiments were undertaken at two different sites, over both flat and gently rolling terrain. Two types of surface-level point aerosol …
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Atmospheric dispersion modelling of particulate and gaseous pollutants affecting the trans-Manche region
… to determine large-scale and meso-scale atmospheric dispersion patterns. The research is only concerned with outdoor exposure to atmospheric pollutants and aims to identify pollution sources using dispersion modelling with the assistance of ground level measurements from British, French …
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Design and Development of an Atmospheric Dispersion Compensator for the LLAMAS instrument on the 6.5m Baade Magellan Telescope
Atmospheric Dispersion is a phenomenon caused by the wavelength dependent refraction of incoming light by Earth’s atmosphere. For non-perpendicular angle of incidence, higher energy light (shorter wavelength) such as blue and violet are refracted more than its lower energy counterparts, for …
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Development and testing of a methodology for attributing sources of airborne pollutants to their receptors
… the laboratory. Additionally, the inventories of atmospheric emission sources in Dundee were investigated in detail in order to satisfy the needs of air dispersion model. A new software package for the atmospheric dispersion models was also developed by the author using Microsoft Visual C++. In …
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An evaluation of meteorological data needs for urban pollution modelling
Atmospheric dispersion models are being increasingly used by local authorities in the United Kingdom as part of their urban air quality management programmes. Output from dispersion models now forms a vital part of any environmental impact assessment, road improvement or traffic management scheme …
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Flight Vehicle Control and Aerobiological Sampling Applications
… using UAVs helps to better understand the atmospheric transport of microorganisms. Autopilot-equipped UAVs can accurately sample along pre-defined flight plans and precisely regulated altitudes. They can provide even greater utility when they are networked together in coordinated sampling …
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Machine Learning Aided Aerial Radiation Mapping
… the complex mechanisms of gaseous radionuclide dispersion, radiation-matter interaction, and the current limitation of dose rate data collection, radiation mapping is considered to be a challenging task. In this study, a general framework for radiation mapping is proposed in static and dynamic …
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Predicting Air Quality Near Roadway Intersections Through The Applicat
… the physical phenomena (e.g., emission rates, atmospheric dispersion, etc.) occurring at intersections. These methods are not straightforward and unintuitive for the users. Therefore, this project investigated the possibility of developing a model that is theoretically more realistic and …
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Particulate matter emissions from commercial beef cattle feedlots in Kansas
… cattle feedlot (KS3) in Kansas by using inverse dispersion modeling with the AMS/EPA Regulatory Model (AERMOD), which is the US EPA preferred regulatory atmospheric dispersion model. PM[subscript]10 emission rates were back-calculated using the resulting PM[subscript]10 concentrations modeled by …
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Assessing PM2.5 pollution and the role of transboundary pollution emissions across Greater Kuala Lumpur, Malaysia from 2018 to 2023
… Fire INventory from National Center for Atmospheric Research (FINNv2.5), and FINN plus Visible Infrared Imaging Radiometer Suite ( FINNv2.5VIIRS); iii) determining the pathway of air masses across GKL using Numerical Atmospheric-dispersion Modelling Environment (NAME), and iv) predicting …
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Development and demonstration of a high-performance Gaussian puff model for nuclear emergency training scenarios in unity game engine
… for modern interactive applications. A real-time dispersion model with simulation time scaling has been developed that provides a platform for creating training scenarios for the emergency response decision making process for radiological and nuclear emergencies. This research explores the …
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‘Organics in ice’: Novel organic compounds in ice cores for use in palaeoclimate reconstruction
… focus on analysing the inorganic component of atmospheric aerosol, trapped and preserved in the ice as a record of past atmosphere. However, this does not fully represent the make-up of atmospheric aerosol, which can be up to 50% organic. This thesis aims to develop the understanding and …
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Linking biophysical models and life cycle assessment to evaluate environmental tradeoffs of urban water infrastructure design
… and the Dommel in conjunction with a generalized atmospheric dispersion model for emission byproducts of electricity generation. We study the downstream transport of ammonium in the river and particulate matter from the power plant emissions. The air emissions modeling found that even a single day …