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dc.contributor.authorBozorg Magham, Amir Ebrahimen_US
dc.date.accessioned2015-08-16T06:00:09Z
dc.date.available2015-08-16T06:00:09Z
dc.date.issued2014-02-21en_US
dc.identifier.othervt_gsexam:2269en_US
dc.identifier.urihttp://hdl.handle.net/10919/56482
dc.description.abstractExploring the concepts of long range aerial transport of microorganisms is the main motivation of this study. For this purpose we use theories and concepts of dynamical systems in the context of geophysical fluid systems. We apply powerful notions such as finite-time Lyapunov exponent (FTLE) and the associated Lagrangian coherent structures (LCS) and we attempt to provide mathematical explanations and frameworks for some applied questions which are based on realistic concerns of atmospheric transport phenomena. Accordingly, we quantify the accuracy of prediction of FTLE-LCS features and we determine the sensitivity of such predictions to forecasting parameters. In addition, we consider the spatiotemporal resolution of the operational data sets and we propose the concept of probabilistic source and destination regions which leads to the definition of stochastic FTLE fields. Moreover, we put forward the idea of using ensemble forecasting to quantify the uncertainty of the forecast results. Finally, we investigate the statistical properties of localized measurements of atmospheric microbial structure and their connections to the concept of local FTLE time-series. Results of this study would pave the way for more efficient models and management strategies for the spread of infectious diseases affecting plants, domestic animals, and humans.en_US
dc.format.mediumETDen_US
dc.publisherVirginia Techen_US
dc.rightsThis Item is protected by copyright and/or related rights. Some uses of this Item may be deemed fair and permitted by law even without permission from the rights holder(s), or the rights holder(s) may have licensed the work for use under certain conditions. For other uses you need to obtain permission from the rights holder(s).en_US
dc.subjectFinite-time Lyapunov exponent (FTLE)en_US
dc.subjectLagrangian coherent structure (LCS)en_US
dc.subjectchaotic atmospheric transporten_US
dc.subjectunresolved turbulenceen_US
dc.subjectstochastic FTLE fielden_US
dc.subjectensemble forecastingen_US
dc.subjectuncertainty analysisen_US
dc.subjectlocal FTLE time-seriesen_US
dc.subjectmaximal diversity monitoringen_US
dc.titleAtmospheric Lagrangian transport structures and their applications to aerobiologyen_US
dc.typeDissertationen_US
dc.contributor.departmentEngineering Science and Mechanicsen_US
dc.description.degreePh. D.en_US
thesis.degree.namePh. D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineEngineering Mechanicsen_US
dc.contributor.committeechairRoss, Shane Daviden_US
dc.contributor.committeechairSchmale, David Garner Burtonen_US
dc.contributor.committeememberIliescu, Traianen_US
dc.contributor.committeememberStremler, Mark A.en_US
dc.contributor.committeememberPaul, Mark R.en_US


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