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Simulation and evaluation of actual evapotranspiration based on inverse hydrological modeling at a basin scale
Liu, Zhaofei; Yao, Zhijun; Wang, Rui
2019-09-01
Source PublicationCATENA
ISSN0341-8162
Volume180Pages:160-168
Corresponding AuthorLiu, Zhaofei(zfliu@igsnrr.ac.cn) ; Wang, Rui(wangr@igsnrr.ac.cn)
AbstractReliable estimation of actual evapotranspiration (AET) is essential for hydrological, ecological, and land-surface models. The water balance method is a useful tool for estimating AET. However, it usually neglects soil moisture (SM), which is a dominant factor in AET simulation. Based on field observations, an inverse hydrological modeling method was proposed for regional AET simulation. The method can be applied to estimate AET in other basins, where observations of SM are available. A nonlinear relationship between AET and potential evapotranspiration, a soil water constraint factor, was developed and calibrated for the studied basin. Results of the AET evaluation indicated this relationship was able to estimate AET accurately for both monthly and twoweek series, as the Nash and Sutcliffe efficiency coefficient (NSE) was 0.903 and 0.613, respectively. The meteorologically based complementary relationship (CR) method was also able to estimate monthly AET accurately, in particular the revised CR method. But it showed poor performance when estimating AET at a shorter timescale. The performance of the revised CR method with a calibrated parameter was better than that of the initial CR method, as the NSE improved from 0.52 to 0.70. Overall, the performance of the nonlinear relationship with calibrated parameters was better than that of the CR method. In conclusion, monthly AET can be accurately estimated using the CR method based only on meteorological data.
KeywordActual evapotranspiration Water balance Complementary relationship Soil moisture Potential evapotranspiration Qinghai-Tibetan Plateau
DOI10.1016/j.catena.2019.03.039
WOS KeywordLAND-SURFACE MODEL ; WATER-BALANCE ; SOIL-MOISTURE ; TEMPORAL STABILITY ; EVAPORATION
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41571027] ; National Natural Science Foundation of China[41561144012] ; National Natural Science Foundation of China[41661144030]
Funding OrganizationNational Natural Science Foundation of China
WOS Research AreaGeology ; Agriculture ; Water Resources
WOS SubjectGeosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS IDWOS:000472244900015
PublisherELSEVIER SCIENCE BV
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Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/58740
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLiu, Zhaofei; Wang, Rui
AffiliationChinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Liu, Zhaofei,Yao, Zhijun,Wang, Rui. Simulation and evaluation of actual evapotranspiration based on inverse hydrological modeling at a basin scale[J]. CATENA,2019,180:160-168.
APA Liu, Zhaofei,Yao, Zhijun,&Wang, Rui.(2019).Simulation and evaluation of actual evapotranspiration based on inverse hydrological modeling at a basin scale.CATENA,180,160-168.
MLA Liu, Zhaofei,et al."Simulation and evaluation of actual evapotranspiration based on inverse hydrological modeling at a basin scale".CATENA 180(2019):160-168.
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