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Intercomparison of Model-Estimated Potential Evapotranspiration on the Tibetan Plateau during 1981-2010
Song, Lulu1; Zhuang, Qianlai2; Yin, Yunhe3; Wu, Shaohong3; Zhu, Xudong4,5,6
2017-12-01
Source PublicationEARTH INTERACTIONS
ISSN1087-3562
Volume21Pages:22
Corresponding AuthorZhu, Xudong(xdzhu@xmu.edu.cn)
AbstractPotential evapotranspiration (PET), the maximum evapotranspiration rate under unlimited water supply, reflects the capacity for transpiration flow and plant primary production. Numerous models have been developed to quantify PET, but there are still large uncertainties in PET estimations. In this study, the authors conducted spatially explicit estimations of daily PET from 1981 to 2010 for eight different land-cover types on the Tibetan Plateau by applying three types of PET models including a combination model (Penman-Monteith), a radiation-based model (Priestley-Taylor), and a temperature-based model (Thornthwaite). This study found that the PET estimated by Thornthwaite model (PETT) was lower than those estimated by Priestley-Taylor (PETPT) and Penman-Monteith models (PETPM). Penman-Monteith model gave the highest estimates of PET on annual and daily scales. The mean annual PET for the whole plateau estimated by these three models varied from 675.1 to 700.5 mm yr(-1), and daily PET varied from 1.33 to 1.92 mm day(-1). The spatial pattern of PETT did not agree with the PETPT and PETPM, while the latter two agreed well with each other. Because of different model structures and dominant meteorological drivers, the interannual variability of PET varied significantly among the models. PETPT and PETPM showed a transition around 1993 since the dominant meteorological drivers were different before and after 1993. These disagreements among different models suggested that PET models with different algorithms should be used with caution. This study provided a validation to assist those undertaking PET estimations on the Tibetan Plateau.
KeywordClimate change Evapotranspiration Model comparison
DOI10.1175/EI-D-16-0020.1
WOS KeywordPENMAN-MONTEITH ; EVAPORATION ; TRENDS ; CHINA ; PARAMETERS
Indexed BySCI
Language英语
Funding ProjectNatural Science Foundation of Fujian Province, China[2017J01069] ; National Natural Science Foundation of China[31600368] ; Fundamental Research Funds for the Central Universities of China[20720160109] ; National Key Research and Development Program of China[2017YFC0506100] ; NASA Land-Cover and Land-Use Change Program[NASA-NNX09AI26G] ; NSF Division of Information and Intelligent Systems[NSF-1028291]
Funding OrganizationNatural Science Foundation of Fujian Province, China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities of China ; National Key Research and Development Program of China ; NASA Land-Cover and Land-Use Change Program ; NSF Division of Information and Intelligent Systems
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000417677400001
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/56801
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhu, Xudong
Affiliation1.Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Environm & Hlth, Xiamen, Fujian, Peoples R China
2.Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China
4.Xiamen Univ, Minist Educ, Key Lab Coastal & Wetland Ecosyst, Xiamen, Fujian, Peoples R China
5.Xiamen Univ, Coll Environm & Ecol, Xiamen, Fujian, Peoples R China
6.Xiamen Univ, Coastal & Ocean Management Inst, Xiamen, Fujian, Peoples R China
Recommended Citation
GB/T 7714
Song, Lulu,Zhuang, Qianlai,Yin, Yunhe,et al. Intercomparison of Model-Estimated Potential Evapotranspiration on the Tibetan Plateau during 1981-2010[J]. EARTH INTERACTIONS,2017,21:22.
APA Song, Lulu,Zhuang, Qianlai,Yin, Yunhe,Wu, Shaohong,&Zhu, Xudong.(2017).Intercomparison of Model-Estimated Potential Evapotranspiration on the Tibetan Plateau during 1981-2010.EARTH INTERACTIONS,21,22.
MLA Song, Lulu,et al."Intercomparison of Model-Estimated Potential Evapotranspiration on the Tibetan Plateau during 1981-2010".EARTH INTERACTIONS 21(2017):22.
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