Evaluation of satellite-based evapotranspiration estimates in China

doi:10.1117/1.JRS.11.026019

	Evaluation of satellite-based evapotranspiration estimates in China
	Huang, Lei 1,2; Li, Zhe 1; Tang, Qiuhong 1,2; Zhang, Xuejun 1; Liu, Xingcai 1; Cui, Huijuan 3
刊名	JOURNAL OF APPLIED REMOTE SENSING
	2017-05-24
卷号	11 页码:22
关键词	evapotranspiration remote sensing solar radiation MODIS evaluation
ISSN号	1931-3195
DOI	10.1117/1.JRS.11.026019
通讯作者	Tang, Qiuhong(tangqh@igsnrr.ac.cn)
英文摘要	Accurate and continuous estimation of evapotranspiration (ET) is crucial for effective water resource management. We used the moderate resolution imaging spectroradiometer (MODIS) standard ET algorithm forced by the MODIS land products and the three-hourly solar radiation datasets to estimate daily actual evapotranspiration of China (ET_MOD) for the years 2001 to 2015. From the point scale validations using seven eddy covariance tower sites, the results showed that the agreement of ET_MOD estimates and observations was higher for monthly and daily values than that of instantaneous values. Under the major river basin and subbasin levels' comparisons with the variable infiltration capacity hydrological model estimates, the ET_MOD exhibited a slight overestimation in northern China and underestimation in southern China. The mean annual ET_MOD estimates agreed favorably with the hydrological model with coefficients of determination (R-2) of 0.93 and 0.83 at major river basin and subbasin scale, respectively. At national scale, the spatiotemporal variations of ET_MOD estimates matched well with those ET estimates from various sources. However, ET_MOD estimates were generally lower than the other estimates in the Tibetan Plateau. This underestimation may be attributed to the plateau climate along with low air temperature and sparsely vegetated surface on the Tibetan Plateau. (C) 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
资助项目	National Natural Science Foundation of China[41425002] ; National Natural Science Foundation of China[51609230] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-ZS-2016-6-4] ; National Youth Top-notch Talent Support Program in China
WOS关键词	EVAPORATIVE FRACTION ; ENERGY-BALANCE ; NORTH CHINA ; MODIS DATA ; TERRESTRIAL ECOSYSTEMS ; IRRIGATION DISTRICT ; SURFACE-TEMPERATURE ; SPATIAL-PATTERNS ; SOLAR-RADIATION ; TRIANGLE METHOD
WOS研究方向	Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology
语种	英语
出版者	SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
WOS记录号	WOS:000402812300001
资助机构	National Natural Science Foundation of China ; Key Research Program of the Chinese Academy of Sciences ; National Youth Top-notch Talent Support Program in China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/63383]
专题	中国科学院地理科学与资源研究所
通讯作者	Tang, Qiuhong
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Huang, Lei,Li, Zhe,Tang, Qiuhong,et al. Evaluation of satellite-based evapotranspiration estimates in China[J]. JOURNAL OF APPLIED REMOTE SENSING,2017,11:22.
APA	Huang, Lei,Li, Zhe,Tang, Qiuhong,Zhang, Xuejun,Liu, Xingcai,&Cui, Huijuan.(2017).Evaluation of satellite-based evapotranspiration estimates in China.JOURNAL OF APPLIED REMOTE SENSING,11,22.
MLA	Huang, Lei,et al."Evaluation of satellite-based evapotranspiration estimates in China".JOURNAL OF APPLIED REMOTE SENSING 11(2017):22.