Comparison of remote sensing evapotranspiration models: Consistency, merits, and pitfalls
文献类型：期刊论文
| 作者 | Bai, Peng |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2023-02-01 |
| 卷号 | 617页码:12 |
| ISSN号 | 0022-1694 |
| 关键词 | Evapotranspiration Model comparison Evaporation Remote sensing |
| DOI | 10.1016/j.jhydrol.2022.128856 |
| 通讯作者 | Bai, Peng(baip@igsnrr.ac.cn) |
| 英文摘要 | Various models are available for large-scale evapotranspiration (ET) estimation. The performance of these models generally differs due to their differences in forcing data, model structure (mathematical representations of the ET process), and parameter estimation. Model comparison is the most straightforward way to identify the strengths, weaknesses, and uncertainty sources of a model. In this study, three widely used remote sensing ET models were considered: the air-relative-humidity-based two-source (ARTS) model, Priestley-Taylor Jet Pro-pulsion Laboratory (PT-JPL) model, and Penman-Monteith-Leuning (PML) model. The three models were eval-uated based on measurements from 12 eddy-covariance (EC) towers and water-balance-based ET estimates from 286 basins. The evaluation results indicate that the PML model performs the best on both the site and basin scales. The advantage of the PML model may be due to (i) the land-cover-based parameter configuration and (ii) the consideration of differences in the responses of soil evaporation and transpiration to soil water deficit. We also investigated the consistencies and differences between the models in simulating the spatiotemporal variation and component partitioning of ET, that is, interception loss (Ei), soil evaporation (Es), and transpiration (Et). The three models show high consistency in estimating nationwide multi-year average ET (416.3-438.2 mm/yr) and its spatial pattern but large discrepancies in ET trends (0.10-0.98 mm/yr2) and component partitioning. The PT-JPL model considerably overestimates the ratio of Ei/ET, thereby underestimating the ratio of Es/ET because of the negative correlation between Ei and Es. The ARTS model presents better applicability in grasslands than in croplands or forestlands. This may be because its parameter value (constant for all biomes) and the water constraint scheme are more suitable for grasslands. Finally, we proposed specific modifications to address the potential issues of each model. |
| WOS关键词 | REVISED GASH MODEL ; LAND-SURFACE ; TERRESTRIAL EVAPOTRANSPIRATION ; ENERGY-BALANCE ; CANOPY TRANSPIRATION ; WATER AVAILABILITY ; HEAT-FLUX ; FOREST ; CHINA ; INTERCEPTION |
| 资助项目 | Third Xinjiang Scientific Expedition Programe ; Natural Science Foundation of China ; [2021xjkk0806] ; [51979263] ; [42271033] |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000895719000002 |
| 资助机构 | Third Xinjiang Scientific Expedition Programe ; Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/188289]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Bai, Peng |
| 作者单位 | Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bai, Peng. Comparison of remote sensing evapotranspiration models: Consistency, merits, and pitfalls[J]. JOURNAL OF HYDROLOGY,2023,617:12. |
| APA | Bai, Peng.(2023).Comparison of remote sensing evapotranspiration models: Consistency, merits, and pitfalls.JOURNAL OF HYDROLOGY,617,12. |
| MLA | Bai, Peng."Comparison of remote sensing evapotranspiration models: Consistency, merits, and pitfalls".JOURNAL OF HYDROLOGY 617(2023):12. |
入库方式： OAI收割
来源：地理科学与资源研究所
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