| 暴雨数值模拟中的CISK机理分析 |
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| 引用本文： | 钟秋珍,郁凡,余志豪.暴雨数值模拟中的CISK机理分析[J].气象科学,2003,23(4):392-400. |
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| 作者姓名： | 钟秋珍 郁凡 余志豪 |
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| 作者单位： | 南京大学大气科学系,南京,210093 |
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| 基金项目： | 国家自然科学基金 4 0 175 0 0 7项目，973国家基础研究项目G19980 4 0 910资助 |
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| 摘 要： | 将卫星反演的水汽资料计入MM5中尺度大气数值模式初始场，增加了模式初始水汽场的中尺度信息。并对长江流域暴雨个例进行了模拟试验。通过分析模拟结果，具体讨论暴雨中的第二类条件不稳定(CISK)机制，即揭示了初始场改进使得中尺度系统的“spin-up”时间提前，暴雨预报效果改善的物理机制。
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| 关 键 词： | 数值模拟 CISK 潜热反馈 |
| 收稿时间： | 9/6/2002 12:00:00 AM |
| 修稿时间： | 2002年9月6日 |
THE ANALYSIS OF CISK MECHANISM IN THE NUMERICAL SIMULATION OF HEAVY RAINFALL |
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| Zhong Qiuzhen,Yu Fan and Yu Zhihao.THE ANALYSIS OF CISK MECHANISM IN THE NUMERICAL SIMULATION OF HEAVY RAINFALL[J].Scientia Meteorologica Sinica,2003,23(4):392-400. |
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| Authors: | Zhong Qiuzhen Yu Fan and Yu Zhihao |
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| Institution: | Dept.of Atmospheric Sciences,Nanjing University 210093;Dept.of Atmospheric Sciences,Nanjing University 210093;Dept.of Atmospheric Sciences,Nanjing University 210093 |
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| Abstract: | In this paper,satellite retrieval moisture data in the MM5 mesoscale model is used to enrich the mesoscale message of initial vapor field in the model,and its simulation experiments of the rainstorm in Changjiang Valley were carried out.By the analysis of the simulation result,the mechanism of the conditional instability of the second kind (CISK) is discussed,then the physical mechanism is revealed that the 'spin-up' time of the mesoscale system is advanced and the rainstorm forecasting effect gets better by the improvement of the initial field. |
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| Keywords: | Numerical simulation CISK Feedback of latent heat |
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