水利学报2012，Vol.43Issue(8)：914-925,12.
遥感蒸散发模型研究进展综述
A review on evapotranspiration estimation models using remotely sensed data
摘要
Abstract
Remote sensing technique has been recognized as the only feasible way to estimate evapotranspiration （ET） in regional scale due to its advantages and rapid developments in recent decades. It is pointed out that remote sensing ET models might face uncertainties resulted from spatial extrapolation of meteorological data and adjustments related to radiometric temperature. The development process of remote sensing ET models is presented along with the reduction of these uncertainties. An overview of the basic theory, assumptions, algorithms, merits and limitations of some remote sensing ET models was given in the present study. The concepts of the spatial ambiguity issue, dry and wet limits （pixels） were discussed as well. Furthermore, the inevitable problems for applying remote sensing ET models such as retrieval of parameters with its uncertainties, temporal extension with its uncertainties, the spatial scale problem, model validation and data assimilation between remote sensing data and land surface model were analyzed, respectively. Finally, the study discussed the possible future trends of remote sensing ET models.关键词
蒸散发/遥感/歧义性/干限/湿限/数据同化Key words
evapotranspiration/remote sensing/ambiguity/dry limit/wet limit/data assimilation分类
天文与地球科学引用本文复制引用
冯景泽,王忠静..遥感蒸散发模型研究进展综述[J].水利学报,2012,43(8):914-925,12.基金项目
科技部国际合作项目 （）
国家自然科学基金项目（51009076 （）
91125018） （）
