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 “"Surface Flux"”.
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Simulation of the radiative flux at the martian surface between 180 and 1100 nm
… created to simulate the non-ionising radiative flux at the surface of Mars. The simulation operates over the range 180 - 1100 nm and determines the diffuse component of the surface flux using the delta-Eddington approximation. Latitude, <i>l</i>, and areocentric longitude, <i>L<sub>s</sub></i>, …
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Preferential flow in vertically oriented, unsaturated soil layers
… to be quantified and related to the applied surface flux and the hydraulic properties of the individual materials under steady-state conditions. The results of the column study and subsequent numerical modelling program showed that water prefers to flow where water exists. In unsaturated …
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Physical mechanisms controlling self-aggregation of convection in idealized numerical modeling simulations
… framework, with interactive radiation and surface fluxes and fixed sea surface temperature. Self-aggregation only occurs at sea surface temperatures above a certain threshold. As the system evolves to an aggregated state, there are large changes to domain averaged quantities important to …
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Development of an Advanced Stem Heating Model
… in an approximate fashion. Simulation with a surface flux boundary condition requires that these phenomena be accounted for. Previous models have used temperature-time boundary conditions, which prevents them from being directly coupled to fire behavior models. This model uses a flux-time …
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Design sensitivity analysis for nonlinear dynamic thermoelastic systems
… displacement, temperature, stress, strain, heat flux vector, temperature gradient, reaction forces, and reaction surface flux. The convolution is employed, in lieu of the time mappings used in other approaches to account for transient response. The design sensitivities for dynamic thermoelastic, …
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Hydrogen Loading System Development and Evaluation of Tritiated Substrates to Optimize Performance in Tritium Based Betavoltaics
… and at room temperature which temperature. Beta flux exiting surface of metal tritide films has been modeled with MC-SET (Monte Carlo Simulation of Electron Trajectories in solids). Surface beta flux simulations have been improved to account for density changes from tritium loading and decay. …
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Terrestrial sources and sinks of atmospheric methyl bromide : three-dimensional modeling of tropospheric abundance and sensitivities
Current estimates of methyl bromide surface fluxes are inconsistent with the observed tropospheric mole fractions (9 to 10 ppt, globally averaged) and the calculated atmospheric lifetime (1.7 ± 0.2 years), with mid-range estimates of sinks exceeding sources by at least 50 Gg y-I. Given the …
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Surface heat fluxes and MJO propagation through the Maritime Continent
… their propagation characteristics. Latent heat flux from CYGNSS and OAFLUX as well as CYGNSS surface winds are used to compare large-scale patterns for MJO events that do and do not propagate through the MC. Local area-averaged surface fluxes and OLR anomalies are 7-14% and 18-22% of the value …
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The seasonal and interannual variability of the West Greenland Current system in the Labrador Sea
… various types of in situ data combined with the surface flux and satellite altimetry data products, I studied the variability of both the boundary current system and the eddies on different time scales as well as their influence on the post-convective restratification of the Labrador Sea …
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The seasonal and interannual variability of the West Greenland current system in the Labrador Sea
… various types of in situ data combined with the surface flux and satellite altimetry data products, I studied the variability of both the boundary current system and the eddies on different time scales as well as their influence on the post-convective re-stratification of the Labrador Sea …
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A large-scale investigation of soil moisture feedbacks on precipitation intensity in the central United States
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-02-04 without embargo terms
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A numerical model study of the stratocumulus-topped marine boundary layer
… developments were required to correctly apply surface flux terms near the sea surface, poor representation of which is common to several models from the recent literature. The improved surface forcing is shown to affect the predicted boundary layer structure. Other developments included the …
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Gas purification by short cycle pressure swing adsorption. Experimental and theoretical studies of a fixed bed adsorption process for the separation of carbon dioxide from air at ambient temperatures using molecular sieve 5A and activated charcoal adsorbents.
… the limiting conditions of a periodic constant surface flux or a periodic constant surface concentration are presented. The experimental performance data were analysed in terms of the proposed analytical solution to give values of the apparent solid phase mass transfer coefficient for comparison …
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Assessing and Improving the Representation of Hydrologic Processes in Atmospheric, Ocean, and Land Modeling and Dataset Generation
… Here, the depiction of three phenomena, ocean surface turbulent fluxes, humidity inversions, and groundwater, are assessed, and suggestions for improvements of their representations are made. First, ocean surface turbulent fluxes, including those of moisture (latent heat flux), heat (sensible …
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Vertical greening in urban built environments
… directed in recent times towards encouraging surface greening approaches. The thesis presented here acknowledged this trend and examined how the typology described as ‘vertical greening’ contributes to this climate resilience enhancement of urban built environments. The project engaged with …
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Simulating organization of convective cloud fields and interactions with the surface
… of the boundary layer is forced by the amount of surface fluxes from below. Conversely, landscape patterns and land-cover heterogeneity may equally give rise to focused regions for deep convection triggering, in particular when patch sizes exceed 10 km. Since the convective boundary layer has a …
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Field Emissions of Methane and Nitrous Oxide from California Landfills
… for extensive ground testing using the static flux chamber method, conducted over a year-long time period. At the five sites for ground testing, between five and seven cover systems were tested at each site during the wet and dry season. Daily, intermediate, and final covers were tested to …
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Free convection and turbulent fluxes over complex terrain
… terrain that free convective injections of surface layer air masses into the atmospheric boundary layer (ABL) can alter the ABL properties significantly. This study aims at the general identification and description of such situations of near-ground free convection conditions (FCCs) over …