A framework of correcting the angular effect of land surface temperature on evapotranspiration estimation in single-source energy balance models
文献类型：期刊论文
| 作者 | Jiang, Yazhen1,3; Tang, Ronglin1,3; Li, Zhao-Liang1,2,3 |
| 刊名 | REMOTE SENSING OF ENVIRONMENT
 |
| 出版日期 | 2022-12-15 |
| 卷号 | 283页码:18 |
| 关键词 | Evapotranspiration Land surface temperature Angular effect Single-source energy balance models Thermal radiation directionality |
| ISSN号 | 0034-4257 |
| DOI | 10.1016/j.rse.2022.113306 |
| 通讯作者 | Tang, Ronglin(tangrl@lreis.ac.cn) |
| 英文摘要 | Evapotranspiration (ET) is an essential parameter connecting the hydrological cycle, energy balance and carbon cycle. The angular effect (AE) of remotely sensed land surface temperature (LST), one of the obstacles hindering the application of single-source energy balance models in continental and global ET estimates, is a long-standing issue that has rarely been witnessed in the last decade. In this study, we propose a general framework for correcting the angular effect that could be practically applied to reduce the uncertainties in the ET estimations with any single-source energy balance-based model, under the guidance of simulation of thermal radiation directionality through the integration of a directional module from the soil-canopy spectral radiances, photosynthesis, fluorescence, temperature, and energy balance (SCOPE) and an artificially added ET estimation module. The correction was conducted by adjusting the directional reflectance and then the reflectance-based fractional vegetation coverage to the view zenith angle of interest, together with estimating the soil and vegetation component temperatures. This framework was later tested on the widely applied surface energy balance system (SEBS) driven by the directional LST from the Moderate Resolution Imaging Spectroradiometer (MODIS) collected on 94 clear-sky days between 2009 and 2010 at the Yucheng site. The simulation results indicated that (1) the AE obviously increased as the view zenith angle increased; (2) the AE was more apparent in the backward scattering direction than in the forward scattering direction; and (3) most of the AE first increased evidently and then decreased with the increase in the leaf area index. The correction results related to the SEBS-based ET estimations, compared to the in situ ET measurements, showed that the proposed framework greatly improved the estimations of ET, with the root mean square error decreasing by 27.6 W/m(2)(similar to 8%, relative to the average 339 W/m(2)) from 86.8 W/m(2) (similar to 25%) to 59.2 W/m(2) (similar to 17%) and the bias decreasing from 49.7 W/m(2) (similar to 15%) to similar to 6.5 W/m(2) (similar to 2%). In conclusion, the proposed framework efficiently corrected the angular effect of remotely sensed LST on ET estimation. We expect more attention to be paid to the angular effect and hope our work could provide insight for solving this pendent issue. |
| WOS关键词 | SENSIBLE HEAT-FLUX ; DIRECTIONAL BRIGHTNESS TEMPERATURE ; FRACTIONAL VEGETATION COVER ; INTEGRATED MODEL ; AIR-TEMPERATURE ; CROP ; SATELLITE ; ANISOTROPY ; CANOPIES ; SIMULATE |
| 资助项目 | National Natural Science Foundation of China[41922009] ; National Natural Science Foundation of China[41921001] ; National Natural Science Foundation of China[42001306] ; National Natural Science Foundation of China[42071332] ; National Key Research and Development Program of China[2018YFA0605401] |
| WOS研究方向 | Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000878629100002 |
| 出版者 | ELSEVIER SCIENCE INC |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/186774]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Tang, Ronglin |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Key Lab Agr Remote Sensing, Minist Agr & Rural Affaires, Beijing 100081, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Yazhen,Tang, Ronglin,Li, Zhao-Liang. A framework of correcting the angular effect of land surface temperature on evapotranspiration estimation in single-source energy balance models[J]. REMOTE SENSING OF ENVIRONMENT,2022,283:18. |
| APA | Jiang, Yazhen,Tang, Ronglin,&Li, Zhao-Liang.(2022).A framework of correcting the angular effect of land surface temperature on evapotranspiration estimation in single-source energy balance models.REMOTE SENSING OF ENVIRONMENT,283,18. |
| MLA | Jiang, Yazhen,et al."A framework of correcting the angular effect of land surface temperature on evapotranspiration estimation in single-source energy balance models".REMOTE SENSING OF ENVIRONMENT 283(2022):18. |
入库方式： OAI收割
来源：地理科学与资源研究所
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