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Complementary-Relationship-Based Modeling of Terrestrial Evapotranspiration Across China During 1982-2012: Validations and Spatiotemporal Analyses
Ma, Ning1; Szilagyi, Jozsef2,3; Zhang, Yinsheng1,4; Liu, Wenbin5
2019-04-27
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
Volume124Issue:8Pages:4326-4351
Corresponding AuthorMa, Ning(ningma@itpcas.ac.cn)
AbstractHaving recognized the limitations in spatial representativeness and/or temporal coverage of (i) current ground ETa observations and (ii) land surface model-and remote sensing-based ETa estimates due to uncertainties in soil and vegetation parameters, a calibration-free nonlinear complementary relationship (CR) model is employed with inputs of air and dew-point temperature, wind speed, and net radiation to estimate 0.1 degrees, monthly ETa over China during 1982-2012. The modeled ETa rates were first validated against 13 eddy-covariance measurements, producing Nash-Sutcliffe efficiency values in the range of 0.72-0.94. On the basin scale, the modeled ETa values yielded a relative bias of 6%, and a Nash-Sutcliffe efficiency value of 0.80 in comparison with water-balance-derived evapotranspiration rates across 10 major river basins in China, indicating the CR-simulated ETa rates reliable over China. Further evaluations suggest that the CR-based ETa product is more accurate than seven other mainstream ETa products. The 31-year mean annual ETa value decreases from the southeast to the northwest in China, resulting in a country average of 406 +/- 15 mm/year. The country-representative annual ETa rates slightly decreased with a rate of -0.5 mm/year (p = 0.86) during 1982-2012. Annual ETa increased significantly over most parts of western and northeastern China but decreased significantly in many regions of the North China Plain as well as in the eastern and southern coastal regions. The present CR-based method, with its calibration-free nature and minimal data requirement, could help future calibrations/verifications of the more complex and more data-intensive land surface model-and remote sensing-based models.
DOI10.1029/2018JD029850
WOS KeywordENERGY-BALANCE CLOSURE ; ECOSYSTEM CO2 EXCHANGE ; WATER-BALANCE ; TIBETAN PLATEAU ; REGIONAL EVAPOTRANSPIRATION ; EVAPO-TRANSPIRATION ; INNER-MONGOLIA ; CLIMATE-CHANGE ; HEAT-FLUX ; EVAPORATION
Indexed BySCI
Language英语
Funding ProjectCAS[XDA2006020102] ; National Key Research and Development Program of China[2017YFA0603101] ; National Natural Science Foundation of China[41430748] ; National Natural Science Foundation of China[41801047] ; National Natural Science Foundation of China[41661144025] ; CAS International Cooperation Program[131C11KYSB20160061] ; BME-Water Sciences & Disaster Prevention FIKP grant of EMMI (BME FIKP-VIZ) ; China Postdoctoral Science Foundation[2017LH032]
Funding OrganizationCAS ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; CAS International Cooperation Program ; BME-Water Sciences & Disaster Prevention FIKP grant of EMMI (BME FIKP-VIZ) ; China Postdoctoral Science Foundation
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000469071400004
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/58991
Collection中国科学院地理科学与资源研究所
Corresponding AuthorMa, Ning
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China
2.Budapest Univ Technol & Econ, Dept Hydraul & Water Resources Engn, Budapest, Hungary
3.Univ Nebraska, Conservat & Survey Div, Sch Nat Resources, Lincoln, NE USA
4.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China
5.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Ma, Ning,Szilagyi, Jozsef,Zhang, Yinsheng,et al. Complementary-Relationship-Based Modeling of Terrestrial Evapotranspiration Across China During 1982-2012: Validations and Spatiotemporal Analyses[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(8):4326-4351.
APA Ma, Ning,Szilagyi, Jozsef,Zhang, Yinsheng,&Liu, Wenbin.(2019).Complementary-Relationship-Based Modeling of Terrestrial Evapotranspiration Across China During 1982-2012: Validations and Spatiotemporal Analyses.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(8),4326-4351.
MLA Ma, Ning,et al."Complementary-Relationship-Based Modeling of Terrestrial Evapotranspiration Across China During 1982-2012: Validations and Spatiotemporal Analyses".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.8(2019):4326-4351.
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