Evapotranspiration over heterogeneous vegetated surfaces : models and applications /

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Bibliographic Details
Author / Creator:Yang, Yuting, author.
Imprint:Heidelberg : Springer, [2015]
Description:1 online resource : illustrations.
Series:Springer theses
Springer theses.
Environmental sciences.
SCIENCE -- Earth Sciences -- Meteorology & Climatology.
Electronic books.
Format: E-Resource Book
URL for this record:http://pi.lib.uchicago.edu/1001/cat/bib/11091681
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Digital file characteristics:text file PDF
Notes:"Doctoral thesis accepted by Tsinghua University, Beijing, China."
Includes bibliographical references.
Online resource; title from PDF title page (EBSCO, viewed February 9, 2015).
Summary:The focus of this work is the development of models to estimate evapotranspiration (ET), investigating the partitioning between soil evaporation and plant transpiration at field and regional scales, and calculating ET over heterogeneous vegetated surfaces. Different algorithms with varying complexities as well as spatial and temporal resolutions are developed to estimate evapotranspiration from different data inputs. The author proposes a novel approach to estimate ET from remote sensing by exploiting the linkage between water and carbon cycles. At the field scale, a hybrid dual source model (H-D model) is proposed. It is verified with field observations over four different ecosystems and coupled with a soil water and heat transfer model, to simulate water and heat transfer in the soil-plant-atmosphere continuum. At the regional scale, a hybrid dual source scheme and trapezoid framework based ET model (HTEM), using remote sensing images is developed. This model is verified with data from the USA and China and the impact of agricultural water-saving on ET of different land use types is analyzed, in these chapters. The author discusses the potential of using a remote sensing ET model in the real management of water resources in a large irrigation district. This work would be of particular interest to any hydrologist or micro-meteorologist who works on ET estimation and it will also appeal to the ecologist who works on the coupled water and carbon cycles. Land evapotranspiration is an important research topic in hydrology, meteorology, ecology and agricultural sciences. Dr. Yuting Yang works at the CSIRO Land and Water, Canberra, Australia.
Other form:Printed edition: 9783662461723
Standard no.:10.1007/978-3-662-46173-0
Table of Contents:
  • Supervisor's Foreword; Abstract; Acknowledgments; Contents; Figures; Tables; 1 Introduction; 1.1 Research Background and Significance; 1.2 Current Research Status; 1.2.1 Land Surface Evapotranspiration Models; Ground Measurement-Based ET Models; Remote Sensing-Based ET Models; 1.2.2 Current Issues; 1.3 Research Outline; References; 2 Comparison of Dual-Source Evapotranspiration Models in Estimating Potential Evaporation and Transpiration; 2.1 Introduction; 2.2 Evapotranspiration Models; 2.2.1 Penman-Monteith Model; 2.2.2 Shuttleworth-Wallace Model; 2.2.3 Two-Patch Model.
  • 2.2.4 TVET Model2.3 Comparison Setups; 2.4 Results and Discussion; 2.4.1 Surfaces with Full Vegetation Cover (Case A); 2.4.2 Surfaces with Uniform and Partial Vegetation Cover (Case B); 2.4.3 Surfaces with Non-uniform and Partial Vegetation Cover (Case C); 2.5 Conclusion; References; 3 A Hybrid Dual-Source Model of Estimating Evapotranspiration over Different Ecosystems; 3.1 Introduction; 3.2 Model Development; 3.3 Data and Model Evaluation Criteria; 3.3.1 Study Site and Data; 3.3.2 Evaluation of Model Performance; 3.4 Results and Discussion; 3.4.1 Model Validation.
  • 3.4.2 Comparison with Other Models3.4.3 Evapotranspiration Components (E and T) and Its Vegetation Controls; 3.4.4 Advantages of the Hybrid Dual-Source Model; 3.5 Conclusion; References; 4 A Hybrid Dual-Source Scheme Based Soil-Plant-Atmosphere Continuum Model (HDS-SPAC) for Water and Heat Dynamics; 4.1 Introduction; 4.2 Model Development; 4.2.1 Surface Energy Budget; 4.2.2 Canopy Interception; 4.2.3 Soil Water/Heat Dynamics; 4.2.4 Root Water Uptake; 4.2.5 Outline of Calculation Procedure and Numerical Solution; 4.3 Model Application in Agricultural Ecosystem; 4.3.1 Site and Data.
  • 4.3.2 Results and Discussion4.3.2.1 Evaporation and Transpiration; Canopy Interception; Soil Water Content; Soil Temperature; 4.4 Model Application in Natural Forest Ecosystem; 4.4.1 Site and Data; 4.4.2 Determination of the Stress Function for Root Water Uptake; 4.4.3 Results and Discussion; 4.5 Conclusion; References; 5 A Hybrid Dual-Source Scheme and Trapezoid Framework Based Evapotranspiration Model (HTEM) Using Satellite Images; 5.1 Introduction; 5.2 Model Development; 5.2.1 Hybrid Dual-Source Scheme.
  • 5.2.2 Vegetation Index-Land Surface Temperature Trapezoidal Space5.3 Model Validation at SMACEX (USA); 5.3.1 Site and Data; 5.3.2 Results; Validation at Flux Sites; Spatial Distribution of Estimated LE from HTEM; 5.3.3 Comparison with Other Models; 5.3.4 Sensitivity Analysis; 5.4 Model Validation at Weishan (China); 5.4.1 Site and Data; 5.4.2 Results; Validation at Flux Site; Processes of Evaporation and Transpiration; 5.4.3 Comparison with Other Models; 5.5 Conclusion; References.