Long‐wave radiation at the ground. II. Geometry of interception by slopes, solids, and obstructed planes
作者:
M. H. Unsworth,
期刊:
Quarterly Journal of the Royal Meteorological Society
(WILEY Available online 1975)
卷期:
Volume 101,
issue 427
页码: 25-34
ISSN:0035-9009
年代: 1975
DOI:10.1002/qj.49710142704
出版商: John Wiley&Sons, Ltd
数据来源: WILEY
摘要:
AbstractAt the earth's surface, long‐wave radiation received from the atmosphere in the absence of cloud may be expressed as the sum of the flux density from an isotropic source and the flux density due to anisotropy of atmospheric radiation. Separation of these components facilitates calculations of the radiative flux received by obstructed horizontal surfaces (near walls or in valleys), by sloping planes, by solid cylinders, and by spheres and prisms. Radiation received from adjacent surfaces is also considered.As the angular distribution of radiation is the same for overcast skies as for clear skies, the relationships for clear skies may be extended to derive climatological mean values for the long‐wave irradiances of slopes, solids,
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