A Full Satellite-Driven Method for the Retrieval of Clear-Sky Evapotranspiration

doi:10.1029/2019EA000869

	A Full Satellite-Driven Method for the Retrieval of Clear-Sky Evapotranspiration
	Leng, Pei 2; Liao, Qian-Yu 2,3; Gao, Mao-Fang 2; Duan, Si-Bo 2; Li, Zhao-Liang 1,2; Zhang, Xia 4; Shang, Guo-Fei 4
刊名	EARTH AND SPACE SCIENCE
	2019-12-04
页码	12
关键词	evapotranspiration satellite-driven temperature-vegetation trapezoidal feature space two-stage
DOI	10.1029/2019EA000869
通讯作者	Li, Zhao-Liang(lizl@unistra.fr) ; Shang, Guo-Fei(shangguofei@hgu.edu.cn)
英文摘要	Evapotranspiration (ET) plays an important role in the soil-vegetation-atmosphere system for its considerable effect in surface energy balance and water cycle. The determination of ET based on full satellite data has been a challenge. In the present study, a full satellite-driven method is proposed based on a newly developed pixel-to-pixel scheme of the land surface temperature-vegetation index trapezoidal feature space in the presence of clear-sky conditions. For the implementation of this approach, the three main meteorological parameters of net surface radiation, air temperature, and relative humidity were obtained solely based on satellite observations. With the exception of the three main satellite-derived meteorological parameters, different wind speed data-including actual measurements, the assimilated product, and an averaged value of meteorological observations-were used to investigate their effects on the retrieval of ET. Specifically, two pixel-to-pixel trapezoidal feature space schemes, namely an original and a two-stage scheme, were implemented to estimate ET over an arid region of the study area located in the northwest part of China. Comparison of the estimated ET with the values acquired from the eddy covariance systems yielded a reliable accuracy response with root-mean-squared errors of similar to 80 W/m(2) and similar to 70 W/m(2) for the original and two-stage trapezoidal methods with satellite-derived inputs, respectively, and constant wind speed data over the growing 2012 season from May to September. These results indicate that the full satellite-driven method is capable of estimating ET over the arid region of the study area.
资助项目	National Natural Science Foundation of China[41601397] ; National Natural Science Foundation of China[41571367] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program[2019QZKK0304] ; Fundamental Research Funds for Central Non-profit Scientific Institution[1610132019012]
WOS关键词	AIR-TEMPERATURE ; SURFACE EVAPOTRANSPIRATION ; ENERGY FLUXES ; SOIL-MOISTURE ; RADIATION ; SYSTEM ; MODEL
WOS研究方向	Astronomy & Astrophysics ; Geology
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000500428800001
资助机构	National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Fundamental Research Funds for Central Non-profit Scientific Institution
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/130375]
专题	中国科学院地理科学与资源研究所
通讯作者	Li, Zhao-Liang; Shang, Guo-Fei
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing, Peoples R China 2.Chinese Acad Agr Sci, Key Lab Agr Remote Sensing, Minist Agr & Rural Affairs, Inst Agr Resources & Reg Planning, Beijing, Peoples R China 3.Guilin Univ Technol, Guangxi Key Lab Spatial Informat & Geomat, Coll Geomat & Geoinformat, Guilin, Peoples R China 4.Hebei GEO Univ, Sch Land Resources & Urban Rural Planning, Shijiazhuang, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Leng, Pei,Liao, Qian-Yu,Gao, Mao-Fang,et al. A Full Satellite-Driven Method for the Retrieval of Clear-Sky Evapotranspiration[J]. EARTH AND SPACE SCIENCE,2019:12.
APA	Leng, Pei.,Liao, Qian-Yu.,Gao, Mao-Fang.,Duan, Si-Bo.,Li, Zhao-Liang.,...&Shang, Guo-Fei.(2019).A Full Satellite-Driven Method for the Retrieval of Clear-Sky Evapotranspiration.EARTH AND SPACE SCIENCE,12.
MLA	Leng, Pei,et al."A Full Satellite-Driven Method for the Retrieval of Clear-Sky Evapotranspiration".EARTH AND SPACE SCIENCE (2019):12.