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 23 for “"Actual evapotranspiration"”.
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Effect of irrigation technology and plant density on cotton growth, yield, yield components, and water use efficiency
… and yield components, and (ii) determine the actual evapotranspiration, water use efficiency, and grass-reference crop coefficients of cotton under different irrigation technologies and rainfed conditions. Four irrigation technologies, which were Low Energy Precision Application (LEPA), Low …
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Near Real-time Seasonal Drought Forecasting and Retrospective Drought Analysis using Simulated Multi- layer Soil Moisture from Hydrological Models at Sub- Watershed Scales
… balance components including soil moisture (SM), actual evapotranspiration (ET), potential evapotranspiration ET (PET), and runoff (SURQ) for near-real time drought severity assessment, and drought forecasting for a lead of 9-months. A combination of the surface and total rooting depth soil …
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Evaluating Changes in Terrestrial Hydrological Components Due to Climate Change in the Chesapeake Bay Watershed
… Geological Survey (USGS) streamflow gages, actual evapotranspiration from USGS Simplified Surface Energy Balance (SSEBop) Model and soil moisture from Soil Analysis Climate Network (SCAN). Six best performing Global Climate Models (GCM) based on Multivariate Adaptive Constructed Analogs …
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MAPPING THE DISTRIBUTION AND ABUNDANCE OF WESTERN LARCH (LARIX OCCIDENTALIS NUTT.) WITH MULTI-TEMPORAL SATELLITE IMAGERY AND GRADIENT MODELING
… balance variables (soil moisture deficit and actual evapotranspiration). Probability prediction rasters produced with these data also showed a noticeable northern aspect tendency. The accuracy of the remote sensing based models suggest that the method may be applied to other areas, and the …
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MAPPING THE DISTRIBUTION AND ABUNDANCE OF WESTERN LARCH (LARIX OCCIDENTALIS NUTT.) WITH MULTI-TEMPORAL SATELLITE IMAGERY AND GRADIENT MODELING
… balance variables (soil moisture deficit and actual evapotranspiration). Probability prediction rasters produced with these data also showed a noticeable northern aspect tendency. The accuracy of the remote sensing based models suggest that the method may be applied to other areas, and the …
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Measurement of Cover Crop Evapotranspiration and Impacts on Water Management in Crop Production Systems
… research contains two parts: (1) estimation of actual evapotranspiration (ETa) using the Bowen-ratio method to calculate crop coefficient curves for a field in eastern South Dakota which in 2011 contained spring wheat followed by a cover crop and in 2012 contained field corn, and (2) utilization …
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Hydrological responses to moorland land-use change
… is given to the responses of soil, moisture and evapotranspiration and the relationship between these two components.Simulated soil moisture deficits derived from empirical models are tested against measured values. Predictions based on Penman-Monteith evapotranspiration and 'layer' moisture …
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Assessing Natural Hazards and Climate Change in a Mountain Region with a Hydrological Digital Twin
… and remote sensing products (for snow, actual evapotranspiration and soil water content). Projected climate scenarios applied to the HDT without irrigation indicate seasonal water shifts with rising winter discharge but summer reductions, a substantial decline in snow cover, and an …
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The Effect of Evapotranspiration on the Groundwater Dome and Past Drought Conditions at Cape Henry, Virginia
… the park.</p> <p>Using the White Method, the actual evapotranspiration (AET) rates were calculated for the two major vegetation groups, namely ponded wetlands and upland dunes, located on Cape Henry. A higher evapotranspiration (ET) rate was calculated for the wetland setting. A finite …
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Climate change and plant species composition and community structure in the Central Grassland Region of North America
… evidence supports a strong relationship between actual evapotranspiration (AET) and aboveground net primary production (ANPP), and strong relationships exist between precipitation and species richness as well. Yet recent predictions of an increase in mean global temperature and changes in …
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Historical Hydroclimatic Change At Theodore Roosevelt National Park: 1895 - 2011
… increase in the mean annual potential evapotranspiration, and annual moisture deficit, and a statistically significant decrease in annual actual evapotranspiration, annual snow storage and the annual ratio of actual to potential evapotranspiration. The study site's increasing …
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Hydrologic Response Caused by Wetland Expansion at Huntley Meadows Park in Hybla Valley, Virginia
… wetlands revealed that spatial variations in actual evapotranspiration (AET) rates strongly influence the distribution of water throughout the park. The effects of AET are strong enough to induce a seasonal reversal in hydraulic gradients where water table elevations surrounding the pond are …
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Spatial and Temporal Distribution of Groundwater Recharge in the West Bank Using Remote Sensing and GIS Techniques
… derived from satellite images (e.g. land cover, evapotranspiration, rainfall, and digital elevation model) with hydrogeological data in a Geographic Information System (GIS) model to identify and map the surface recharge areas. The Surface Energy Balance Algorithm for Land (SEBAL) is applied to …
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Are all wetland models the same? Comparing wetland models and streamflow regulation of catchment-scale hydrological modelling tools under a changing climate
… identify process similarities between the actual and modelled wetland or the realism of the modelled impacts of the wetland on streamflow before applying the model's output to water resource decisions. This research aims to identify and evaluate wetland characteristics, processes and …
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Remote sensing-based assessment of crop yield and water dynamics in the southern Great Plains (USA)
… more water. Furthermore, it was found that crop evapotranspiration (ETc) was the most significant feature affecting the performance of the ML model among the various meteorological variables. The importance score was 0.73. These findings demonstrate that high-resolution satellite data can support …
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Irrigation scheduling: a soft adaptor to weather uncertainties and irrigation efficiency improvement initiatives
… taking into consideration precipitation (P), evapotranspiration (ET), plant available water (PAW) and crop coefficient (Kc). This was achieved through estimating Kc of pasture at different grazing rotations by field measurements and analysing irrigation and deep percolation under a range of …
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Modelling the spatial distributions and water use of Mauritius thorn (Caesalpinia decapetala) and river red gum (Eucalyptus camal dulensis) using remote sensing and geographic information system techniques in the Vhembe Biosphere Reserve
… Water is used by IAPS using remotely sensed Evapotranspiration (ET) derivatives from the Food and Agriculture Organisation’s (FAO) Water Productivity Open-access Portal (WaPOR). ET products as a proxy for plant water focusing on E. camaldulensis and C. decapetala in the VBR. The study focused …
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The Brazilian Cerrado: ecohydrological assessment of water and soil degradation in heavily modified meso-scale catchments
… to the projections of the RCP 8.5 scenario. The actual evapotranspiration (ET) for the cropland scenario was higher compared to the cerrado cover (+100 mm a–1). Land use change scenarios confirmed that deforestation caused higher annual ET rates explaining partly the trend of decreased …
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Modelling water budget at a basin scale using JGrass-NewAge system
… experience. This means that JGrass-NewAGE is not actually a model, but a set of elements (the components) that can be combined just before runtime to produce various modelling solutions. Topics like calibration of processes, the interpolation forcing and the assessment of forecasting errors can …
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