Regional Estimation of Remotely Sensed Evapotranspiration Using the Surface Energy Balance-Advection (SEB-A) Method
文献类型：期刊论文
| 作者 | Liu, Suhua1; Su, Hongbo1; Zhang, Renhua1; Tian, Jing1; Chen, Shaohui1; Wang, Weizhen1 |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2016 |
| 卷号 | 8期号:8 |
| 关键词 | TERRASAR-X ACCURACY SYRIA |
| 通讯作者 | Su, HB (reprint author), Florida Atlantic Univ, Dept Civil Environm & Geomat Engn, Boca Raton, FL 33431 USA. |
| 英文摘要 | Evapotranspiration (ET) is an essential part of the hydrological cycle and accurately estimating it plays a crucial role in water resource management. Surface energy balance (SEB) models are widely used to estimate regional ET with remote sensing. The presence of horizontal advection, however, perturbs the surface energy balance system and contributes to the uncertainty of energy influxes. Thus, it is vital to consider horizontal advection when applying SEB models to estimate ET. This study proposes an innovative and simplified approach, the surface energy balance-advection (SEB-A) method, which is based on the energy balance theory and also takes into account the horizontal advection to determine ET by remote sensing. The SEB-A method considers that the actual ET consists of two parts: the local ET that is regulated by the energy balance system and the exotic ET that arises from horizontal advection. To evaluate the SEB-A method, it was applied to the middle region of the Heihe River in China. Instantaneous ET for three days were acquired and assessed with ET measurements from eddy covariance (EC) systems. The results demonstrated that the ET estimates had a high accuracy, with a correlation coefficient (R-2) of 0.713, a mean average error (MAE) of 39.3 W/m(2) and a root mean square error (RMSE) of 54.6 W/m(2) between the estimates and corresponding measurements. Percent error was calculated to more rigorously assess the accuracy of these estimates, and it ranged from 0% to 35%, with over 80% of the locations within a 20% error. To better understand the SEB-A method, the relationship between the ET estimates and land use types was analyzed, and the results indicated that the ET estimates had spatial distributions that correlated with vegetation patterns and could well demonstrate the ET differences caused by different land use types. The sensitivity analysis suggested that the SEB-A method requested accurate estimation of the available energy, R-n - G, but was less constrained with the difference between ground and air temperature, T-0 - Ta-loc. |
| 学科主题 | Remote Sensing |
| 类目[WOS] | Remote Sensing |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000382458700031 |
| 源URL | [http://ir.radi.ac.cn/handle/183411/39522]  |
| 专题 | 遥感与数字地球研究所_SCI/EI期刊论文_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Florida Atlantic Univ, Dept Civil Environm & Geomat Engn, Boca Raton, FL 33431 USA 4.Chinese Acad Sci, Inst Remote Sensing & DigitalEarth, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China 5.Chinese Acad Sci, Heihe Remote Sensing Expt Res Stn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 73000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Suhua,Su, Hongbo,Zhang, Renhua,et al. Regional Estimation of Remotely Sensed Evapotranspiration Using the Surface Energy Balance-Advection (SEB-A) Method[J]. REMOTE SENSING,2016,8(8). |
| APA | Liu, Suhua,Su, Hongbo,Zhang, Renhua,Tian, Jing,Chen, Shaohui,&Wang, Weizhen.(2016).Regional Estimation of Remotely Sensed Evapotranspiration Using the Surface Energy Balance-Advection (SEB-A) Method.REMOTE SENSING,8(8). |
| MLA | Liu, Suhua,et al."Regional Estimation of Remotely Sensed Evapotranspiration Using the Surface Energy Balance-Advection (SEB-A) Method".REMOTE SENSING 8.8(2016). |
入库方式： OAI收割
来源：遥感与数字地球研究所
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