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 18 of 18 for “"Parameterization Scheme"”.
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Application of the Weather Research and Forecasting (WRF) Model to Simulate a Squall Line: Implications of Choosing Parameterization Scheme Combinations and Model Initialization Data Sets
… study was to examine the performance of several parameterization scheme combinations in the Weather Research and Forecasting Model version three (WRF) as they related to this event. These examinations included cloud microphysics (WRF Single-Moment 3-class, 6-class, and Goddard), cumulus …
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A Cumulus Parameterization Study With Special Attention to the Arakawa-Schubert Scheme (semi-Prognostic, Meso-Scale Simulation)
Arakawa and Schubert (1974) developed a cumulus parameterization scheme in a framework that conceptually divides the mutual interaction of the cumulus convection and large-scale disturbance into the categories of large-scale budget requirements and the quasi-equilibrium assumption of cloud work …
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Multi-parametric Programming for Microgrid Operational Scheduling
… mixed-integer linear programming (mp-MILP) via parameterizations of the uncertain coordinates of the wind and solar resources. This results in a bi-level optimization problem, where choice of the parameterization scheme is made at the upper level while system operation decisions are made at the …
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Developing and Evaluating the Composite Runoff Index Geographic Model for Urban Rainfall-Runoff Modeling
… Thanapura. Use with permission)—an area-weighted parameterization scheme-based remote sensing and GIS methodology—for efficiently and effectively estimating the critical input as required by the most widely used single-parameter rainfall-runoff techniques: the curve number (CN) for the Natural …
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On the Interaction between Gravity Waves and Atmospheric Thermal Tides
… second part of this work focuses on gravity wave parameterization scheme effects on the tides in GCMs. The Specified Dynamics Whole Atmosphere Community Climate Model (SD-WACCM) and the extended Canadian Middle Atmosphere Model (eCMAM) are used for this analysis. The gravity wave parameterization …
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Spatio-Temporal Dependence of Precipitation over the Contiguous United States
… of convection and the other with a convective parameterization scheme. Designed to account for the transient and intermittent character of precipitation, these new verification techniques show that explicit formulation of convection yields spatio-temporal covariance structures that agree …
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Uncertainty quantification of unconventional reservoirs using assisted history matching methods
… AHM and optimization tool. We develop a new parameterization scheme that allows for altering individual properties of multiple wells or fracture groups. The reservoir is divided into three types of regions: formation matrix; EDFM fracture groups; and stimulated rock volume (SRV) around …
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Assessment of mesoscale eddy parameterizations for coarse resolution ocean models
… with numerical oceanic models requires a proper parameterization scheme in order to represent the effects of unresolved mesoscale eddies. Even though a munber of schemes have been proposed and some have led to improvements in the simulation of the bulk climatological properties, the success of …
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Tomographic velocity model building in high-fidelity seismic depth imaging of near surface and VSP settings
… between the raypath distribution and the model parameterization scheme. A reasonable model parametrization is the key to successful tomography applications, especially when the ray coverage is poor and uneven. Motivated by a geologically plausible model parameterization, the multiscale …
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Assessment of mesoscale eddy parameterizations for coarse resolution ocean models
… with numerical oceanic models requires a proper parameterization scheme in order to represent the effects of unresolved mesoscale eddies. Even though a munber of schemes have been proposed and some have led to improvements in the simulation of the bulk climatological properties, the success of …
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Representation of eddies in climate models by a potential vorticity flux
This thesis addresses the parameterization of the heat and momentum transporting properties of eddy motions for use in three-dimensional, primitive equation, z-coordinate atmosphere and ocean models. Determining the transport characteristics of these eddies is fundamental to understanding their …
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Flash Flooding in Eastern Kentucky: An Analysis of the 3-4 August 2001 Event
… The model used for this paper utilized the Grell parameterization scheme, which provided better results than the other parameterization schemes tested (Kain-Fritsch). The Eastern Kentucky flash flood event, like the majority of other flash flood events throughout the Contiguous United States, did …
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Representation of eddies in climate models by a potential vorticity flux
This thesis addresses the parameterization of the heat and momentum transporting properties of eddy motions for use in three-dimensional, primitive equation, z-coordinate atmosphere and ocean models. Determining the transport characteristics of these eddies is fundamental to understanding their …
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Analysis of droplet behavior on a rotating surface in atomization-based cutting fluid systems for micro-machining
… the model development. On the modeling front, a parameterization scheme is developed to mathematically define the 3D shape of droplet upon impingement. The shape information is used to develop an energy-based model for droplet spreading. The droplet spreading model captures the experimental …
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Gravity Wave and Turbulence Transport in the Mesopause Region
… can contribute to a more comprehensive parameterization scheme in terms of the thermal structure and wave dissipation for the general circulation models (GCMs). The derived turbulence parameters and cooling/heating rates can provide significant references for parameterizing the …
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Modeling nighttime chemistry with WRF/chem: sensitivity to vertical resolution and boundary layer parameterization
… to different existing planetary boundary layer parameterizations within the WRF-Chem model, as well as the sensitivity to model resolution in the vertical direction. We use a 1-D version of WRF-Chem to systematically investigate a summer and a winter case of meteorological conditions. In the …
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The use of gamma distributions to quantify the dependence of cloud particle size distributions in hurricanes on cloud and environmental conditions
… effect on modeled latent heat release. The cloud parameterizations used in such models make assumptions about the size distributions (SDs) of different ice species, such as cloud ice, graupel, and snow, which have typically not been based on observations obtained in TCs. The representativeness of …