Estimating land evapotranspiration from potential evapotranspiration constrained by soil water at daily scale
文献类型：期刊论文
| 作者 | Liu, Zhaofei1,2 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2022-08-15 |
| 卷号 | 834页码:14 |
| 关键词 | Actual evapotranspiration Eddy covariance observation Temperature based potential evapotranspiration Reference evapotranspiration Daily evapotranspiration Complementary relationship |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2022.155327 |
| 通讯作者 | Liu, Zhaofei(zfliu@igsnrr.ac.cn) |
| 英文摘要 | Accurate simulation of evapotranspiration is of substantial importance to hydrology, ecology, agriculture, and water resources management. Evapotranspiration is equal to the fraction of potential evapotranspiration (PET) constrained by soil water. PET can be calculated from meteorological observations with a wide global distribution and high den-sity. However, it is necessary to determine how to accurately simulate daily evapotranspiration through PET. We have developed a non-linear function for simulating evapotranspiration through PET constrained by soil water at daily scale. The evaluation results show that the accuracy of the evapotranspiration simulation using the non-linear function was higher than that of linear relations and complementary relationship (CR) methods. In the temperature-based PET equations, the Hargreaves-Samani equation was the closest to the Penman-Monteith calculation values. The simulation accuracy of the CR methods obviously improved after parameter calibration. The accuracy has a large variability at the global scale. Daily evapotranspiration can be simulated with PET data in some regions with a high accuracy (Nash and Sutcliffe efficiency coefficient > 0.60), including most regions of Eurasia, eastern and south-ern North America, and northern South America. However, other regions showed a poor performance (Nash and Sutcliffe efficiency coefficient < 0.20), including western North America, the Mediterranean region, and the eastern and western coastal regions of Australia. Our results indicate that the accurate simulation of daily evapotranspiration can be achieved based on meteorological data in most regions of the world. Owing to the wide distribution of global meteorological observations, the accurate simulation of the daily evapotranspiration method proposed in this study can be applied in other regions across the globe. |
| WOS关键词 | TERRESTRIAL EVAPOTRANSPIRATION ; COMPLEMENTARY PRINCIPLE ; EVAPORATION ; MODELS ; STANDARD ; FLUX |
| 资助项目 | Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23090302] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA2006020202] ; National Natural Science Foundation of China[42171029] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000797878100009 |
| 出版者 | ELSEVIER |
| 资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/178430]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Liu, Zhaofei |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Zhaofei. Estimating land evapotranspiration from potential evapotranspiration constrained by soil water at daily scale[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,834:14. |
| APA | Liu, Zhaofei.(2022).Estimating land evapotranspiration from potential evapotranspiration constrained by soil water at daily scale.SCIENCE OF THE TOTAL ENVIRONMENT,834,14. |
| MLA | Liu, Zhaofei."Estimating land evapotranspiration from potential evapotranspiration constrained by soil water at daily scale".SCIENCE OF THE TOTAL ENVIRONMENT 834(2022):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
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