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  • LA

  • Earth observation for quantifying ecohydrological fluxes & interrelations :A regional case: The Konya Closed Basin, Turkey

    • Authors: Verhoef, W.; Gökmen, M.;  Advisor: -;  Participants: - (2013)

  • Thesis deals with improving the quantification of hydrological fluxes, particularly evapotranspiration, for continuously or seasonally water-stressed regions; presents an integrated method, which combines remote sensing based evapotranspiration and precipitation estimates with available ground data to establish each component of the water balance; presents a regional framework for an integrated and spatio- temporally distributed assessment of human-induced trends in the hydrology and the associated ecological health of a semi-arid basin where both human activities (i.e. agriculture) and natural ecosystems are highly groundwater- dependent; describes an RS-based and quantitative framework for assessing the limits and variations of sustainable water resources and the ecological water ...
  • BB

  • Simulation of Forest Evapotranspiration Using Time-Series Parameterization of the Surface Energy Balance System (SEBS) over the Qilian Mountains

    • Authors: Tian, Xin;  Advisor: -;  Participants: - (2013)

  • We propose a long-term parameterization scheme for two critical parameters, zero-plane displacement height (d) and aerodynamic roughness length (z0m), that we further use in the Surface Energy Balance System (SEBS). A sensitivity analysis of SEBS indicated that these two parameters largely impact the estimated sensible heat and latent heat fluxes. First, we calibrated regression relationships between measured forest vertical parameters (Lorey’s height and the frontal area index (FAI)) and forest aboveground biomass (AGB). Next, we derived the interannual Lorey’s height and FAI values from our calibrated regression models and corresponding forest AGB dynamics that were converted from interannual carbon fluxes, as simulated from two incorporated ecological models and a 2009 forest bas...
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