A New Contextual Parameterization of Evaporative Fraction to Reduce the Reliance of the T-s - VI Triangle Method on the Dry Edge
文献类型：期刊论文
| 作者 | Zhu, Wenbin; Lv, Aifeng; Jia, Shaofeng; Yan, Jiabao |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2017 |
| 卷号 | 9期号:1页码:25 |
| 关键词 | evaporative fraction T-s - VI triangle method TVX method MODIS |
| ISSN号 | 2072-4292 |
| DOI | 10.3390/rs9010026 |
| 通讯作者 | Jia, Shaofeng(jiasf@igsnrr.ac.cn) |
| 英文摘要 | In this study, a new parameterization scheme of evaporative fraction (EF) was developed from the contextual information of remotely sensed radiative surface temperature (T-s) and vegetation index (VI). In the traditional T-s VI triangle methods, the Priestley-Taylor parameter circle divide of each pixel was interpolated for each VI interval; in our proposed new parameterization scheme (NPS), it was performed for each isopiestic line of soil surface moisture. Specifically, circle divide of mixed pixels was determined as the weighted-average value of bare soil circle divide and full-cover vegetation circle divide. The maximum T-s of bare soil (T-smax) is the sole parameter needed as the constraint of the dry edge. This has not only bypassed the task involved in the determination of the maximum T-s of fully vegetated surface (T-cmax), but also made it possible to reduce the reliance of the T-s - VI triangle methods on the determination of the dry edge. Ground-based measuremen T-s taken during 21 days in 2004 were used to validate the EF retrievals. Results show that the accuracy achieved by the NPS is comparable to that achieved by the traditional T-s - VI triangle methods. Therefore, the simplicity of the proposed new parameterization scheme does not compromise its accuracy in monitoring EF. |
| WOS关键词 | SOUTHERN GREAT-PLAINS ; SENSED SURFACE-TEMPERATURE ; GREEN VEGETATION FRACTION ; REMOTE-SENSING DATA ; SOIL-WATER CONTENT ; AIR-TEMPERATURE ; ENERGY FLUXES ; HEAT-FLUX ; EVAPOTRANSPIRATION ESTIMATION ; SATELLITE IMAGERY |
| 资助项目 | National Natural Sciences Foundation of China[90302009] ; Ministry of Water Resources of China |
| WOS研究方向 | Remote Sensing |
| 语种 | 英语 |
| WOS记录号 | WOS:000395492600026 |
| 出版者 | MDPI AG |
| 资助机构 | National Natural Sciences Foundation of China ; Ministry of Water Resources of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/64817]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Jia, Shaofeng |
| 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 | Zhu, Wenbin,Lv, Aifeng,Jia, Shaofeng,et al. A New Contextual Parameterization of Evaporative Fraction to Reduce the Reliance of the T-s - VI Triangle Method on the Dry Edge[J]. REMOTE SENSING,2017,9(1):25. |
| APA | Zhu, Wenbin,Lv, Aifeng,Jia, Shaofeng,&Yan, Jiabao.(2017).A New Contextual Parameterization of Evaporative Fraction to Reduce the Reliance of the T-s - VI Triangle Method on the Dry Edge.REMOTE SENSING,9(1),25. |
| MLA | Zhu, Wenbin,et al."A New Contextual Parameterization of Evaporative Fraction to Reduce the Reliance of the T-s - VI Triangle Method on the Dry Edge".REMOTE SENSING 9.1(2017):25. |
入库方式： OAI收割
来源：地理科学与资源研究所
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