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 20 of 34 for “"spatio-temporal variability"”.
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Spatio-temporal Variability in Surface Ocean pCO2 Inferred from Observations
The variability of surface ocean pCO2 is examined on multiple spatial and temporal scales. Temporal autocorrelation analysis is used to examine pCO2 variability over multiple years. Spatial autocorrelation analysis describes pCO2 variability over multiple spatial scales. Spatial autocorrelation …
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Magnitude and spatio-temporal variability of methane emissions from a eutrophic freshwater lake
… through bubbling. However, spatial and temporal heterogeneity in ebullition has complicated efforts to accurately measure such methane emissions. This thesis presents the results from a two-year study of methane biogeochemistry conducted at the eutrophic, stratified, Upper Mystic Lake …
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Spatio-temporal variability of aerosols in the tropics relationship with atmospheric and oceanic environments
… of recent advances in the study of aerosols variability, uncertainty in their spatial and temporal distributions still presents a challenge in the understanding of climate variability. For example, aerosol loading varies not only from year to year but also on higher frequency intraseasonal …
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Spatio-temporal variability and energy-balance implications of surface ponds on Himalayan debris-covered glaciers
… 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 distribution of supraglacial ponds in the Langtang Valley of Nepal, then develops and …
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Impact of spatio-temporal variability of the Mascarene High on weather and climate over Southern Africa
… Hemispheres. This study investigates the spatio-temporal variability of the Mascarene High over the South Indian Ocean on (anomalous) weather and climate over southern Africa at intraseasonal, seasonal, interannual, multidecadal and event time-scales. The Mascarene High is located 25-35°S, …
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Spatio-temporal variability of soil moisture in the Canadian boreal forest and influence of the organic soil layer
… results have importance for understanding the spatio-temporal variability of SM in the Canadian boreal forest.
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Spatio-temporal Variability in Rainfall and Wet-canopy Evaporation within a Small Catchment Recovering from Selective Tropical Forestry.
… harvesting, sought to identify the spatial and temporal structure of the local rainfall, and the impact of forestry on wet-canopy evaporation and lumped, water-balance components. A total of 450 throughfall gauges, 50 raingauges and 40 stemflow gauges were installed and digitally surveyed within …
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Soil moisture dynamics from satellite observations, land surface modeling, and field data
<p>Knowledge of soil moisture variability 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 …
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A Importância do uso de cisternas no Assentamento Oziel Pereira – Remigio PB.
… PB. The semi-arid region characterized by spatio-temporal variability of rainfall. Periodic droughts become vulnerable water systems, with strong negative impact on thousands of families. The storage of rainwater tanks is an alternative supply to mitigate the effects of drought. This study …
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Intertidal Seagrass Meadows in South West England: The Ecology of Expansion
… platforms. It further aims to define the spatio-temporal variability of the organic carbon (Corg) stocks through analysis of sediment cores, and the biodiversity of the macrobenthic assemblage within these new meadows through infauna cores, comparing results with samples collected from an …
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Relationships between tree rings and Landsat EVI in the Northeast United States
… estimates, ultimately improving understanding of spatio-temporal variability in forest productivity. The research presented in this thesis investigates potential empirical relationships between networks of TRW chronologies and time series of Landsat EVI and Landsat-based phenological metrics in …
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Submerged wood inhabiting macoinvertebrates of the Elm Fork of the Trinity River, Texas: Assemblage analyses, comparisons to the benthic fauna, and a study of Cyrnellus fraternus (Trichoptera: Polycentropodidae)
Taxonomic composition and spatio-temporal variability of macroinvertebrates inhabiting snags were examined from an 8-km segment of the Elm Fork of the Trinity River. Seventy-seven macroinvertebrate taxa were collected from submerged wood during the study. Assemblages were highly variable spatially …
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Combining smart model diagnostics and effective data collection for snow catchments
… I developed a new method to assess the temporal dynamics of model performance (or TIGER - TIme series of Grouped Errors). This method is powerful in highlighting recurrent patterns of insufficient model behaviour for long simulation periods. I answered the third question with the …
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Satellite indices of fluvial influence in coastal waters
… and in-situ measurements is used to explore the spatio-temporal distribution of terrestrial constituents in coastal environments. The covariance between riverine delivery of optically active constituents and the corresponding optical variability in neighboring coastal waters for the Mississippi …
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Tracking retreat processes at the Falljökull Glacier, SE Iceland
… Furthermore, subglacial drainage undergoes temporal evolution and can vary spatially between and within individual glaciers. As such, the degree of connectivity between ice melt and ice dynamics exhibits spatio-temporal variability. To address this, time-lapse images from Falljökull, SE …
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Spatio-Temporal Dependence of Precipitation over the Contiguous United States
… climate models are unable to account for the variability of precipitation within a grid box, and that other hydrologically critical precipitation characteristics, such as intensity and frequency, are often times overlooked in the literature. Several issues related to spatial averaging of these …
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Vegetation Variability and Its Hydro-Climatologic Dependence
… this research is to investigate the multi-scale variability of vegetation, its dependence on hydrologic controls such as topography, soil properties, vegetation type, and climate variations (e.g., the El Nino Southern Oscillation [ENSO]), and to synthesize this understanding for future predictive …
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A Virtual Ocean framework for environmentally adaptive, embedded acoustic navigation on autonomous underwater vehicles
… three nominal steps. First, we investigate the spatio-temporal variability of the Beaufort Lens. Second, we design a human-in-the-loop graphical decision-making framework to encode desired sound speed profile information into a lightweight, digital acoustic message for onboard navigation and …
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