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A Universal T-s-VI Triangle Method for the Continuous Retrieval of Evaporative Fraction From MODIS Products
Zhu, Wenbin1,2; Jia, Shaofeng1,2; Lv, Aifeng1,2
2017-10-16
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
Volume122Issue:19Pages:10406-10427
Corresponding AuthorZhu, Wenbin(zhuwb@igsnrr.ac.cn)
AbstractThe triangle method based on the spatial relationship between remotely sensed land surface temperature (T-s) and vegetation index (VI) has been widely used for the estimates of evaporative fraction (EF). In the present study, a universal triangle method was proposed by transforming the T-s-VI feature space from a regional scale to a pixel scale. The retrieval of EF is only related to the boundary conditions at pixel scale, regardless of the T-s-VI configuration over the spatial domain. The boundary conditions of each pixel are composed of the theoretical dry edge determined by the surface energy balance principle and the wet edge determined by the average air temperature of open water. The universal triangle method was validated using the EF observations collected by the Energy Balance Bowen Ratio systems in the Southern Great Plains of the United States of America (USA). Two parameterization schemes of EF were used to demonstrate their applicability with Terra Moderate Resolution Imaging Spectroradiometer (MODIS) products over the whole year 2004. The results of this study show that the accuracy produced by both of these two parameterization schemes is comparable to that produced by the traditional triangle method, although the universal triangle method seems specifically suited to the parameterization scheme proposed in our previous research. The independence of the universal triangle method from the T-s-VI feature space makes it possible to conduct a continuous monitoring of evapotranspiration and soil moisture. That is just the ability the traditional triangle method does not possess.
Keywordevaporative fraction triangle method Southern Great Plains land surface temperature vegetation index MODIS
DOI10.1002/2017JD026964
WOS KeywordSOUTHERN GREAT-PLAINS ; SENSED SURFACE-TEMPERATURE ; REMOTE-SENSING DATA ; SOIL-WATER CONTENT ; MSG-SEVIRI DATA ; CLEAR-SKY DAYS ; VEGETATION INDEX ; ENERGY-BALANCE ; AIR-TEMPERATURE ; HEAT-FLUX
Indexed BySCI
Language英语
Funding ProjectNational Natural Sciences Foundation of China[41701485]
Funding OrganizationNational Natural Sciences Foundation of China
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000413675900017
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/61182
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhu, Wenbin
Affiliation1.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Zhu, Wenbin,Jia, Shaofeng,Lv, Aifeng. A Universal T-s-VI Triangle Method for the Continuous Retrieval of Evaporative Fraction From MODIS Products[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(19):10406-10427.
APA Zhu, Wenbin,Jia, Shaofeng,&Lv, Aifeng.(2017).A Universal T-s-VI Triangle Method for the Continuous Retrieval of Evaporative Fraction From MODIS Products.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(19),10406-10427.
MLA Zhu, Wenbin,et al."A Universal T-s-VI Triangle Method for the Continuous Retrieval of Evaporative Fraction From MODIS Products".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.19(2017):10406-10427.
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