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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (6): 1866-1873    DOI: 10.7522/j.issn.1000-694X.2013.00270
Weather and Climate     
Simulating Evapotranspiration Based on SEBS Model and Sensitivity Analysis of the Parameters in the Middle Reaches of Heihe River Basin
HE Lei1, BIE Qiang1, WANG Yao2, ZHAO Chuan-yan2
1.College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China;
2.Institute of Arid Agroecology/School of Life Sciences, Lanzhou University, Lanzhou 730000, China
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Abstract  

The research of evapotranspiration (ET) has great significance for water resource management and ecosystem restoration in arid areas. In this study, from March to September in 2009, the regional ET in the middle reaches of Heihe River basin was estimated based on SEBS (The Surface Energy Balance System) model and reference crop evapotranspiration. Compared with the result of eddy correlation data, the ET estimated by SEBS model was proved to be valid. Due to regional ET of each month, we can find that the regional average ET obviously varied month to month. The result also showed a large difference of ET amount in crop growth season of research area which distributed from 23.4 mm to 752.6 mm and the regional average was 428.7 mm. And the parameters sensitivity analysis showed that the ET had different response to variation of parameters concerned with SEBS model. The sensitivity of land surface temperature was the biggest, followed by air temperature, wind, and surface albedo in order. SEBS model was the most insensitive to NDVI and air humidity.

Key words:  SEBS      reference crop evapotranspiration      parameters sensitivity analysis      the middle reaches of Heihe River basin      evapotranspiration     
Received:  17 October 2012      Published:  20 November 2012
ZTFLH:  S162.4  

Cite this article: 

HE Lei1, BIE Qiang1, WANG Yao2, ZHAO Chuan-yan2. Simulating Evapotranspiration Based on SEBS Model and Sensitivity Analysis of the Parameters in the Middle Reaches of Heihe River Basin. JOURNAL OF DESERT RESEARCH, 2013, 33(6): 1866-1873.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00270     OR     http://www.desert.ac.cn/EN/Y2013/V33/I6/1866

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