| 积云动力和电过程二维模式研究 Ⅰ．理论和模式 |
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| 引用本文： | 言穆弘,郭昌明,葛正谟.积云动力和电过程二维模式研究 Ⅰ．理论和模式[J].地球物理学报,1996,39(Z1):52-64. |
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| 作者姓名： | 言穆弘 郭昌明 葛正谟 |
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| 作者单位： | 1. 中国科学院兰州高原大气物理研究所, 兰州 730000;
2. 上海市气象局台风研究所, 上海 200030 |
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| 摘 要： | 提出了一个模拟积云动力和电力发展的二维时变轴对称模式。考虑了１０种主要微物理过程，它们包括凝结（凝华）、蒸发、自动转换、粒子间的碰撞以及冰晶核化，次生冰晶等。在起电过程中除了考虑常规的扩散和电导起电外，重点引入了感应和非感应起电，以及次生冰晶起电的作用。作者认为后三个过程是形成积云电结构的主要物理因子。
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| 关 键 词： | 雷暴 起电机制 数值模拟 |
| 收稿时间： | 1996-12-30 |
NUMERICAL STUDY OF CLOUD DYNAMIC-ELECTRIFICATION IN AN AXISYMMETRIC,TIME-DEPENDENT CLOUD MODEL I. THEORY AND MODEL |
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| YAN MU-HONG,GUO CHANG-MING,GE ZHEN-MO.NUMERICAL STUDY OF CLOUD DYNAMIC-ELECTRIFICATION IN AN AXISYMMETRIC,TIME-DEPENDENT CLOUD MODEL I. THEORY AND MODEL[J].Chinese Journal of Geophysics,1996,39(Z1):52-64. |
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| Authors: | YAN MU-HONG GUO CHANG-MING GE ZHEN-MO |
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| Institution: | 1. Lanzhou Institute of Plateau Atmospheric Physics, Academia Sinica, Lanzhou 730000, China;
2. Shanghai Institute of Typhoon, Shanghai Meteorological Bureau, shanghai 200030, China |
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| Abstract: | In this paper, an axisymmetric, time-dependent, dynamic-electrification numerical cloud model has been applied to study electric active processes of a convective cloud during the lifetime of the cloud. The model consider eight microphysical processes which include condensation, deposition, evaporation, autoconversion of cloud-rain, collection, freezing, melting, nucleation and multiplication of ice crystals, and five electrification processes which include ionic diffusion, electric attraction, inductive charging, non-inductive charging and secondary ice crystal charging. We think that the inductive and non-inductive charging processes are primary physical processes for electric structure of the cumulonimbus. |
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| Keywords: | Thunderstorm Charging mecharism Numerical simulation |
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