ALBEDO OF VEGETATED SURFACES - ITS VARIABILITY WITH DIFFERING IRRADIANCES

被引：55

作者：

KRIEBEL, KT ^{[1
]}

机构：

[1] UNIV MUNICH,INST METEOROL,D-8000 MUNICH 2,FED REP GER

来源：

REMOTE SENSING OF ENVIRONMENT | 1979年 / 8卷 / 04期

关键词：

D O I：

10.1016/0034-4257(79)90028-2

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The albedo of four vegetated surfaces was investigated to derive its variability with differing distributions of the irradiance. The results are based on measured values of the spectral biconical reflectance factor, which are combined with calculated spectral irradiances for low and high atmospheric turbidity. The solar zenith angle is varied from 0° to 80°. The derived spectral albedos are then integrated with respect to wavelength in order to achieve the albedo. It is found that the variability of the albedo with respect to the atmospheric turbidity is less than 0.01 in nearly all cases. The variability of the albedo with respect to the solar elevation angle, however, is larger than 0.02 in many cases. For solar elevation angles from 20° to 60°, the variability of the albedo of the four surfaces can be represented by a mean curve which fits the individual variabilities with an accuracy of 0.015. © 1979.

引用

页码：283 / 290

页数：8