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 16 of 16 for “"Atmospheric energy"”.
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Seasonal changes in the global atmospheric energy balance and results for restricted regions,
Thesis (Ph D.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1970.
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Spatio-temporal variability and energy-balance implications of surface ponds on Himalayan debris-covered glaciers
Surface ponds play a key role in transferring atmospheric energy to the ice for debris-covered glaciers, but as the spatial and temporal distribution of ponds is not well documented, their effect on glacier ablation is unknown. This thesis uses remote sensing and field methods to assess the …
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Directional growth of wind generated waves
… spectral growth mechanism, i.e., it applies the energy balance equation in a directionally integrated form. The directionality of its growth is obtained from an assumed spreading function on the wind direction. In this study, the energy balance equation is applied in directional form using …
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Understanding changes in precipitation with climate change over wet and dry land
… mechanism. This study uses the perturbation atmospheric energy budget to understand the projected increase in precipitation over dry and wet land with climate change. Using global climate model output, the change in each term in the perturbation energy budget was calculated as a regional …
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A Biomimetic, Energy-Harvesting, Obstacle-Avoiding, Path-Planning Algorithm for UAVs
… dissertation presents two new approaches to energy harvesting for Unmanned Aerial Vehicles (UAV). One method is based on the Potential Flow Method (PFM); the other method seeds a wind-field map based on updraft peak analysis and then applies a variant of the Bellman-Ford algorithm to find the …
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Delay of Spring Snowmelt due to Storm-Induced Changes in Snowpack, Columbia River Headwaters, Western Montana, USA
… but melt-runoff delays continue even after energy is again added to the snowpack. Following a storm episode, two energy barriers must be overcome before surface melt can drain through the snowpack: 1) cold content created by heat lost during the episode must be overcome, and 2) dry pore …
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Delay of Spring Snowmelt due to Storm-Induced Changes in Snowpack, Columbia River Headwaters, Western Montana, USA
… but melt-runoff delays continue even after energy is again added to the snowpack. Following a storm episode, two energy barriers must be overcome before surface melt can drain through the snowpack: 1) cold content created by heat lost during the episode must be overcome, and 2) dry pore …
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Modeling and Simulation of Autonomous Thermal Soaring with Horizon Simulation Framework
… UAVs were programmed to exploit this free atmospheric energy from thermals to improve their range and endurance. Researchers had successfully flown UAVs autonomously with thermal soaring method. Most research involved some form of flight simulation. Improvements to the aircraft and thermal …
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Dynamics of global ocean heat transport variability
… schemes are suggested to remove the inertial energy to prevent aliasing when the model fields are stored for later analysis. Globally, the cross-equatorial, seasonal heat transport fluctuations are close to +4.5 x 1015 watts, the same amplitude as the seasonal, cross-equatorial atmospheric …
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Dynamics of global ocean heat transport variability
… schemes are suggested to remove the inertial energy to prevent aliasing when the model fields are stored for later analysis. Globally, the cross-equatorial, seasonal heat transport fluctuations are close to +4.5 x 1015 watts, the same amplitude as the seasonal, cross-equatorial atmospheric …
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Oceanic planetary waves in the coupled ocean-atmosphere system
… waves is studied under the effects of different atmospheric couplings. First, analytical matchings are formulated in which a Rossby wave is coupled to different thermodynamical atmospheres, from a simple heat flux condition to the inclusion of an atmospheric energy balance model. The effects on …
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The cloud-radiative forcing of the U.S. landfalling atmospheric rivers
<p>Atmospheric rivers (ARs) are narrow channels in the atmosphere that transport an enormous amount of moisture from the tropics to the higher latitudes. Streaks of highly reflective clouds are observed along with the ARs in satellite imagery. These clouds both influence the moisture transport of …
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Dynamics and Drivers: Carbon fluxes from temperate freshwater reservoirs
… the global carbon cycle, influencing the earth’s atmospheric energy budget. When considering freshwater reservoirs, these greenhouse gas emissions are anthropogenic, yet have received little research focus or integration into carbon budgets, despite having potential implications for policy makers. …
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The Lorenz Energy Cycle of the Global Atmosphere during the past 35 Years (1979-2013)
The Lorenz energy cycle (Lorenz 1955) describes how the solar heating generates potential energy that can be converted into kinetic energy to drive Earth’s atmospheric system. Therefore, the studies of the Lorenz energy cycle can help us understand the atmospheric system from a unique energy …
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Electrostatic charging of jumping droplets on superhydrophobic nanostructured surfaces : fundamental study and applications
… adhesion and release of excess surface energy, which has been shown to increase heat transfer by 30 - 40% compared to that observed during gravitational shedding of droplets. While this droplet jumping phenomenon has been studied on a range of surfaces, past work has neglected …
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Midlatitude Storm Track Response to Increased Greenhouse Warming
… rate. Diagnosis of the latitude-by-latitude energy budget for the current and future climate demonstrates how the coupling between radiative and surface heat fluxes and eddy heat and moisture transport influences the midlatitude storm track response to global warming. Through radiative …