Soil evaporation and vegetation transpiration: Remotely sensed estimation and validation

  • role: First author第一作者
  • Affiliation:

    Chongqing Engineering Research Center for Remote Sensing Big Data Application, School of Geographical Sciences, Southwest University, Chongqing 400715, China

    State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China

  • Email:songls@swu.edu.cn
  • Introduction:宋立生(1987— ),男,副教授,研究方向为多尺度土壤蒸发和植被蒸腾遥感估算与验证等研究。E-mail:songls@swu.edu.cn
Lisheng SONG12,  
  • role: Corresponding author通信作者
  • Affiliation:

    State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China

  • Email:smliu@bnu.edu.cn
  • Introduction:刘绍民(1967— ),男,教授,研究方向为水文气象与遥感等研究。E-mail:smliu@bnu.edu.cn
Shaomin LIU2*,  
  • Affiliation:

    State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China

Tongren XU2,  
  • Affiliation:

    State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China

Ziwei XU2,  
  • Affiliation:

    School of Economics and Management, Department of Geography, Handan University, Handan 056005, China

Yanfei MA3

resumen

Land surface evapotranspiration (ET) and its partitioning between evaporation (E) and transpiration (T) is a significant component of water and energy cycles at all scales, from field and watershed to regional and global, and is essential to many applications in climate, weather, hydrology, and ecology. The land surface ET and its components E and T can be produced conveniently at a range of spatial and temporal scales by combining the advanced remotely sensed data and its land surface products such as land surface temperature, leaf area index, and landcover, among others. This work aims to evaluate and summarize available remotely sensed models currently used to determine ET and components E and T. The remotely sensed-based model of land surface E and T has undergone several stages of development, including series and parallel energy balance models, spatial variability model, remote sensing and meteorological combination model, and data assimilation technology divided based on diverse model mechanisms. However, these models provide wide ranges of E and T, whose uncertainty may be limited by the unreasonable component temperatures partitioned from land surface temperature, parameterization of the stress factors of T from vegetation and E from soil surface, and uncertainty of the reproduced meteorological data as model input data. Future studies should improve model performance under heterogeneous surface and upscale the point or patch ground measurements of E and T to satellite pixel scale to validate remotely sensed model simulations.

palabra clave

soil evaporation;vegetation transpiration;remotely sensed model;estimation;validation

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