On the relationship between direct and diffuse radiation

被引：10
作者：
Zhang, Feng [1 ,2 ,3 ]
Li, Jiangnan [4 ]
Zhang, Hua [5 ]
Ma, Leiming [3 ]
Zhou, Xiuji [1 ]
机构：
[1] Chinese Acad Meteorol Sci, Beijing 100081, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] China Meteorol Adm, Shanghai Typhoon Inst, Shanghai 200030, Peoples R China
[4] Univ Victoria, Canadian Ctr Climate Modeling & Anal, Victoria, BC, Canada
[5] China Meteorol Adm, Natl Climate Ctr, Lab Climate Studies, Beijing 100081, Peoples R China
来源：
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER | 2013年 / 115卷
基金：
中国国家自然科学基金;
关键词：
Radiative transfer; Direct radiation; Diffuse radiation; MULTIPLE-SCATTERING; SPECTRAL ALBEDO; LAYERED MEDIA; MODEL; APPROXIMATION; ATMOSPHERES; ACCURACY; ALGORITHM; AEROSOLS; CLIMATE;
D O I：
10.1016/j.jqsrt.2012.09.009
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The relationship between the direct and diffuse radiation is analyzed. It is shown that the solution of diffuse radiation is a special case of the solution for direct radiation. No extra effort is needed to find out the solution of diffuse radiation. Under the single-layer condition, the diffuse reflection/transmission/absorption are compared for the two-stream and four-stream approximations. It is found that the delta-four-stream approximation can dramatically improve the accuracy of the delta-two-stream approximation, with relative error generally less than 5%. (c) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：60 / 65
页数：6
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