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.
Results
Showing 1 to 14 of 14 for “"land surface processes"”.
-
Modeling land surface processes of the midwestern United States : predicting soil moisture under a warmer climate
… IBIS has several key advantages over the native surface physics scheme used in RegCM3, Biosphere-Atmosphere Transfer Scheme 1e (BATS1e), most notably superior subsurface hydrology and partitioning of runoff. A series of 22-year numerical experiments were completed to evaluate the ability of …
-
Coupling of Integrated Biosphere Simulator to Regional Climate Model version 3
… model that includes representations of land surface processes, canopy physiology, vegetation phenology, terrestrial biogeochemistry, and vegetation dynamics. A single subroutine was created that allows RegCM3 to use IBIS instead of Biosphere-Atmosphere Transfer Scheme 1 e (BATS 1 e) for …
-
Land Cover Land Use Change and Soil Organic Carbon Under Climate Variability in the Semi-Arid West African Sahel (1960-2050)
<p>Land Cover Land Use (LCLU) change affects land surface processes recognized to influence climate change at local, national and global levels. Soil organic carbon is a key component for the functioning of agro-ecosystems and has a direct effect on the physical, chemical and biological …
-
Modeling Hydrological Response to Potential Climate Change and Urbanization in the Kishwaukee River Basin
… but some noticeable changes (+38.5%) in the surface flow under the Uber scenario, which is associated with very high population growth. They also show that runoff is predicted to increase linearly with increasing imperviousness level. The climate scenarios were generated based on climate …
-
Biosphere-atmosphere interactions over semi-arid regions : modeling the role of mineral aerosols and irrigation in the regional climate system
This dissertation describes the role of land surface processes in shaping semi-arid climates, namely those of Southwest Asia and Northwest Africa. The interactions between dust emissions, irrigation, and climate processes are studied and quantified using a regional climate model to perform a series …
-
Soil moisture dynamics from satellite observations, land surface modeling, and field data
… is essential to understand hydrologic processes at a range of scales. In this study, spatio-temporal variability of soil moisture and inter-comparison among different soil moisture products were analyzed. The variability patterns were well characterized by negative exponential fitting …
-
Satellite-based estimates of net radiation and modeling the role of topography and vegetation on inter-annual hydro-climatology
… climate change related to hydrologic cycle. The Surface Radiation Budget (SRB) is an important component in the study of land surface processes. Existing SRB retrieval algorithms generally suffer from two major shortcomings: difficulty in dealing with cloudy sky conditions and reliance on …
-
Land surface response to climate change forcing over Southern Africa
The land surface is important to the climate system for the exchanges of moisture, momentum and heat. Momentum, radiation, and sensible and latent heat fluxes between the atmosphere and the surface will likely affect atmospheric dynamics, temperature, precipitation and humidity fields (Sato et ai., …
-
Mineral dust lofting and interactions with cold pools
… dust storms, or haboobs, form when strong surface winds loft loose soils in convective storm outflow boundaries. Haboobs are a public safety hazard and can cause a near instantaneous loss of visibility, inimical air quality, and contribute significantly to regional dust and radiation …
-
Coupled Behaviour of Soil and Plant Water Dynamics: Effects of Vegetation Cover, Soil Type and Fire Disturbance
… dynamics are strongly coupled over most of the land surface. Soil and plant water dynamics also play a crucial role in linking water, energy and carbon cycles, as they are underlying plant transpiration, latent heat transport between land surface and atmosphere as well as plant photosynthesis. …
-
Satellite Microwave Remote Sensing of Boreal-Arctic Land Surface State and Meteorology from AMSR-E
… component of the Earth’s climate system. Near-surface vapor pressure deficit, soil temperature, and soil moisture are essential state variables for monitoring high latitude climate and estimating the response of terrestrial ecosystems to climate change. Methods are developed and evaluated to …
-
Satellite Microwave Remote Sensing of Boreal-Arctic Land Surface State and Meteorology from AMSR-E
… component of the Earth’s climate system. Near-surface vapor pressure deficit, soil temperature, and soil moisture are essential state variables for monitoring high latitude climate and estimating the response of terrestrial ecosystems to climate change. Methods are developed and evaluated to …
-
Extreme events in geoarchives
… lake basins act as natural sediment traps in the landscape continuously recording land surface processes including floods and (ii) individual flood events are preserved as detrital layers intercalated in the varved sediment sequence and can be dated with seasonal precision by varve counting. The …