INFLUENCE OF CLOUDS ON TRANSMITTED SOLAR RADIATION ABOVE AN INHOMOGENEOUS GROUND SURFACE

被引:0
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作者
周秀骥
吴北婴
吕达仁
机构
[1] Beijing
[2] Academy of Meteorological Science State Meteorological Administration
[3] Academia Sinica
[4] Institute of Atmospheric Physics
关键词
INFLUENCE OF CLOUDS ON TRANSMITTED SOLAR RADIATION ABOVE AN INHOMOGENEOUS GROUND SURFACE;
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摘要
Monte-Carlo method has been applied to investigate the radiance and radiative flux on the horizontallyinhomogeneous ground surface in a cloudy atmosphere.It has been found that the characteristics of theground radiance and flux are significantly changed by clouds.The flux in the quadrant toward the surfacewith higher reflectivity are greater than that toward the surface with lower reflectivity.And the flux variesacross the boundary of the two areas with different surface albedos.The effect of inhomogeneity of the surfacealbedo in a cloudy atmosphere can extend far to 20 km.In addition,the horizontal distribution of the fluxabsorbed by the ground is more homogeneous in a cloudy atmosphere than that in a clear air.
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页码:490 / 499
页数:10
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