期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：1992
卷号：XXIX Part B7
页码：914-918
出版社：Copernicus Publications
摘要：Evapotranspiration (ET) is a key element in climate related studies on all spatial and temporal scales. Recent studieshave shown that ET can be estimated with some degree of precision from meteorological satellites, over flat terrain,using semi-empirical and analytical models. However, no method has been proposed in order to derive this parameterin mountainous terrain by combining remotely sensed imagery with ancillary data. This can be explained in part bythe difficulties in estimating many of the relevant parameters which control ET rates, namely the radiation balance,wind speed and the aerodynamic resistance. In this paper, an approach is proposed for estimating ET in a high reliefenvironment with Landsat Thematic Mapper imagery and digital terrain data. Preliminary results in the computationof the net shortwave radiation in the alpine tundra of Niwot Ridge (Colorado Front Range, U.S.A.) suggest possiblesolutions to the problem of estimating of ET in mountainous terrain using remotely sensed data
关键词：Evapotranspiration; net radiation; alpine tundra; Landsat Thematic Mapper; digital terrain data.
