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Assessing the ability of potential evapotranspiration models in capturing dynamics of evaporative demand across various biomes and climatic regimes with ChinaFLUX measurements
Zheng, Han1,2; Yu, Guirui2,7; Wang, Qiufeng2,7; Zhu, Xianjin1,3; Yan, Junhua4; Wang, Huimin2; Shi, Peili2; Zhao, Fenghua2; Li, Yingnian5; Zhao, Liang5; Zhang, Junhui6; Wang, Yanfen7
2017-08-01
Source PublicationJOURNAL OF HYDROLOGY
AbstractEstimates of atmospheric evaporative demand have been widely required for a variety of hydrological analyses, with potential evapotranspiration (PET) being an important measure representing evaporative demand of actual vegetated surfaces under given metrological conditions. In this study, we assessed the ability of various PET models in capturing long-term (typically 2003-2011) dynamics of evaporative demand at eight ecosystems across various biomes and climatic regimes in China. Prior to assessing PET dynamics, we first examined the reasonability of fourteen PET models in representing the magnitudes of evaporative demand using eddy-covariance actual evapotranspiration (AET) as an indicator. Results showed that the robustness of the fourteen PET models differed somewhat across the sites, and only three PET models could produce reasonable magnitudes of evaporative demand (i.e., PET >= AET on average) for all eight sites, including the: (i) Penman; (ii) Priestly-Taylor and (iii) Linacre models. Then, we assessed the ability of these three PET models in capturing dynamics of evaporative demand by comparing the annual and seasonal trends in PET against the equivalent trends in AET and precipitation (P) for particular sites. Results indicated that nearly all the three PET models could faithfully reproduce the dynamics in evaporative demand for the energy-limited conditions at both annual and seasonal scales, while only the Penman and Linacre models could represent dynamics in evaporative demand for the water-limited conditions. However, the Linacre model was unable to reproduce the seasonal switches between water- and energy-limited states for some sites. Our findings demonstrated that the choice of PET models would be essential for the evaporative demand analyses and other related hydrological analyses at different temporal and spatial scales. (C) 2017 Elsevier B.V. All rights reserved.
PublisherELSEVIER SCIENCE BV
Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/18085
Collection中国科学院西北高原生物研究所
Corresponding AuthorYu, Guirui
Affiliation1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
3.Shenyang Agr Univ, Coll Agron, Shenyang 110161, Liaoning, Peoples R China
4.Chinese Acad Sci, South China Bot Garden, Guangzhou 510650, Guangdong, Peoples R China
5.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining 810001, Qinghai, Peoples R China
6.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Liaoning, Peoples R China
7.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zheng, Han,Yu, Guirui,Wang, Qiufeng,et al. Assessing the ability of potential evapotranspiration models in capturing dynamics of evaporative demand across various biomes and climatic regimes with ChinaFLUX measurements[J]. JOURNAL OF HYDROLOGY,2017.
APA Zheng, Han.,Yu, Guirui.,Wang, Qiufeng.,Zhu, Xianjin.,Yan, Junhua.,...&Wang, Yanfen.(2017).Assessing the ability of potential evapotranspiration models in capturing dynamics of evaporative demand across various biomes and climatic regimes with ChinaFLUX measurements.JOURNAL OF HYDROLOGY.
MLA Zheng, Han,et al."Assessing the ability of potential evapotranspiration models in capturing dynamics of evaporative demand across various biomes and climatic regimes with ChinaFLUX measurements".JOURNAL OF HYDROLOGY (2017).
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