Comparison of ET estimations by the three-temperature model, SEBAL model and eddy covariance observations
文献类型：期刊论文
| 作者 | Zhou, Xinyao ; Bi, Shaojie ; Yang, Yonghui ; Tian, Fei ; Ren, Dandan |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2014 |
| 卷号 | 519期号:1页码:769-776 |
| 关键词 | 3T model SEBAL model Eddy covariance Evapotranspiration Taklamakan desert oasis |
| ISSN号 | 0022-1694 |
| 中文摘要 | The three-temperature (3T) model is a simple model which estimates plant transpiration from only temperature data. In-situ field experimental results have shown that 3T is a reliable evapotranspiration (ET) estimation model. Despite encouraging results from recent efforts extending the 3T model to remote sensing applications, literature shows limited comparisons of the 3T model with other remote sensing driven ET models. This research used ET obtained from eddy covariance to evaluate the 3T model and in turn compared the model-simulated ET with that of the more traditional SEBAL (Surface Energy Balance Algorithm for Land) model. A field experiment was conducted in the cotton fields of Taklamakan desert oasis in Xinjiang, Northwest China. Radiation and surface temperature were obtained from hyperspectral and thermal infrared images for clear days in 2013. The images covered the time period of 09001800 h at four different phenological stages of cotton. Meteorological data were automatically recorded in a station located at the center of the cotton field. Results showed that the 3T model accurately captured daily and seasonal variations in ET. As low dry soil surface temperatures induced significant errors in the 3T model, it was unsuitable for estimating ET in the early morning and late afternoon periods. The model-simulated ET was relatively more accurate for squaring, boiling and boll-opening stages than for seedling stage of cotton during when ET was generally low. Wind speed was apparently not a limiting factor of ET in the 3T model. This was attributed to the fact that surface temperature, a vital input of the model, indirectly accounted for the effect of wind speed on ET. Although the 31 model slightly overestimated ET compared with SEBAL and eddy covariance, it was generally reliable for estimating daytime ET during 0900-1600 h. (C) 2014 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000347589500063 |
| 公开日期 | 2015-03-23 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9124]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhou, Xinyao,Bi, Shaojie,Yang, Yonghui,et al. Comparison of ET estimations by the three-temperature model, SEBAL model and eddy covariance observations[J]. JOURNAL OF HYDROLOGY,2014,519(1):769-776. |
| APA | Zhou, Xinyao,Bi, Shaojie,Yang, Yonghui,Tian, Fei,&Ren, Dandan.(2014).Comparison of ET estimations by the three-temperature model, SEBAL model and eddy covariance observations.JOURNAL OF HYDROLOGY,519(1),769-776. |
| MLA | Zhou, Xinyao,et al."Comparison of ET estimations by the three-temperature model, SEBAL model and eddy covariance observations".JOURNAL OF HYDROLOGY 519.1(2014):769-776. |
入库方式： OAI收割
来源：生态环境研究中心
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