Evaluating the SEBS-estimated evaporative fraction from MODIS data for a complex underlying surface
文献类型：SCI/SSCI论文
| 作者 | Wu H. |
| 发表日期 | 2013 |
| 关键词 | EF SEBS MODIS complex surface large-aperture scintillometer balance system sebs energy-balance diurnal behavior evapotranspiration estimation self-preservation algorithm fluxes heat radiation |
| 英文摘要 | With the complex nature of land surfaces, more attention should be paid to the performance of remotely sensed models to estimate evapotranspiration from moderate and low spatial resolution data. Taking into account the characteristic of a stable evaporative fraction (EF) in the daytime, this paper uses the surface energy balance system (SEBS) to estimate the EF from MODIS data for a subtropical evergreen coniferous plantation in southern China and evaluates the stability of the SEBS model in estimating the EF under complex surface conditions. The results show that the SEBS-estimated EF is larger than the measured EF partly because of the serious lack of energy-balance closure. This difference can be largely reduced by the residual energy correction method. More evaporative land cover within the MODIS pixel is a main reason for the overestimated EF. SEBS underestimates sensible heat flux, and the underestimation of surface available energy also contributes to the overestimation of the EF. The EF estimated from MODIS/Terra data is in agreement with that from MODIS/Aqua data with a coefficient of determination (R-2) of 0.552, a mean bias error (BIAS) of 0.028, and a root mean square error (RMSE) of 0.079, which is consistent with the result from in situ measurements. In addition, the estimation of surface available energy from remotely sensed data is evaluated on this complex underlying surface. Compared with in situ measurements, the available energy is underestimated by 28Wm(-2) with an RMSE=50Wm(-2) and an R-2=0.87. Copyright (c) 2012 John Wiley & Sons, Ltd. |
| 出处 | Hydrological Processes |
| 卷 | 27 |
| 期 | 22 |
| 页 | 3139-3149 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0885-6087 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/30360]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Wu H.. Evaluating the SEBS-estimated evaporative fraction from MODIS data for a complex underlying surface. 2013. |
入库方式： OAI收割
来源：地理科学与资源研究所
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