| 利用多模传输理论求解块状云的辐射特征 |
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| 引用本文： | 胡丽琴,刘长盛.利用多模传输理论求解块状云的辐射特征[J].大气科学,2004,28(1):91-100. |
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| 作者姓名： | 胡丽琴 刘长盛 |
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| 作者单位： | 中国气象局国家卫星气象中心,北京,100081;南京大学大气科学系,南京,210093 |
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| 基金项目： | "九五"重中之重项目96-908-01-06-4资助 |
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| 摘 要： | 实际云层在水平与垂直方向都是不均匀的,但为了便于计算,绝大多数关于云辐射的理论模式,都采用平面平行模式.到目前为止,解决三维空间辐射传输问题的方法仍然不多.一般采用统计方法和二流近似法,但这两种方法分别在计算机时和计算精度上受到限制.作者在三维多模传输理论与辐射传输计算程序软件包--DISORT的基础上,发展出计算三维孤立云块多次散射过程的一套程序(MM-DISORT),并由此初步探讨了云块的三维立体结构对云的短波吸收的影响.
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| 关 键 词： | 三维辐射传输 多模传输理论 云辐射 云的短波吸收 |
| 文章编号： | 1006-9895(2004)01-0091-10 |
An Attempt to Study the Three-Dimensional Radiative Properties of Cloud Using the Theory of Multimode Transfer |
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| HU Li-Qin and LIU Chang-Sheng.An Attempt to Study the Three-Dimensional Radiative Properties of Cloud Using the Theory of Multimode Transfer[J].Chinese Journal of Atmospheric Sciences,2004,28(1):91-100. |
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| Authors: | HU Li-Qin and LIU Chang-Sheng |
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| Abstract: | Clouds are the major contributor to modulate the energy balance of the earth-atmosphere system. Observations have confirmed that almost no cloud field on Earth are horizontally and vertically uniform. But most studies on cloud-radiation are based on the assumption of plane-parallel radiative transfer. Methods for modeling radiative transfer in inhomogeneous three-dimensional media are still few. This paper gives an overview of the theory of 3D multimode radiative transfer, and developed a code based on this theory and DISORT(the most common code of 1D radiative transfer) to investigate the influence of the sides of the finite clouds on cloud shortwave absorption. |
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| Keywords: | three-dimensional radiative transfer theory of multimode radiative transfer cloud radiation cloud short wave absorption |
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