COMPARISON OF MODIS DERIVED EVAPOTRANSPIRATION WITH LAS MEASUREMENTS AT CHANGWU AGRO-ECOLOGICAL EXPERIMENTAL STATION

被引：0
|
作者：
Tang, Ronglin [1 ,2 ,3 ]
Zhu, Yuanjun [4 ]
Liu, Wenzhao [4 ]
Li, Zhao-Liang [1 ,3 ]
机构：
[1] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China
[2] Grad Univ Chinese Acad Sci, Beijing, Peoples R China
[3] UdS, CNRS, LSIIT, Illkirch Graffenstaden 67412, France
[4] Northwest A&F Univ, Chinese Acad Sci, Inst Soils & Water Conservat, Yanglling 712100, Peoples R China
来源：
2010 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM | 2010年
基金：
中国国家自然科学基金;
关键词：
Evapotranspiration; Validation; surface temperature-vegetation index; Large Aperture Scintillometer; SURFACE; RADIATION;
D O I：
10.1109/IGARSS.2010.5652752
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Significance of Evapotranspiration (ET) has been realized in disciplines of hydrology, meteorology and agriculture from a number of studies. A parameterization based on the spatially contextual information of surface temperature-vegetation index, namely T-s-VI triangle method, is applied to estimate regional ET from remotely sensed data acquired at the Changwu agro-ecological experiment station. Surface net radiation (R-n) is estimated also from MODIS/Terra products. Ratio of soil heat flux (G) to R-n is determined using a linear combination of G/R-n at bare soil and fully vegetated surface. Reasonably good agreement between estimated and measured sensible heart flux from Large Aperture Scintillometer is observed with RMSD about 48 W/m(2).
引用
收藏
页码：1529 / 1532
页数：4
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