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A Method for Determing Regional Evaportranspiration Based on Microwave Sensing Technique

Journal

Plateau Meteorology

Authors

Zhang Tangtang, Wen Jun, Li Zhenchao, Tian Hui, Liu Rong, Xi Jiaju

Year

2013

Volume

32

Issue

6

Pages

1651-1657

Corresponding Author

Zhang, TT

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ttzhang@lzb.ac.cn

Keywords

Microwave remote sensing; Soil water and heat transfer; Regional evapotranspiration; Loess Plateau

Abstract

A method for determing regional evapotranspiration (ET) is proposed, which is combing with regional land surface top layer soil moisture estimated from ENVISAT/ASAR, regional land surface temperature obtained from EOS/MODIS, and the micrometeorological data. And the method was used to estimate the regional ET over the typical mesa of Chinese loess plateau, the results show that the estimation of ET is very closer with the ground measurements of eddy correlation system, the maximum absolute error is 117 W·m~(-2), the minimum absolute error is 0.6 W·m~(-2), and the average error is 24 W·m~(-2). So, the proposed method provides a new way to estimate the regional ET in the application on land surface process.
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