| 一次MCS过程的卫星云图和数值模拟分析 |
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| 引用本文： | 顾亚进,唐洵昌,等.一次MCS过程的卫星云图和数值模拟分析[J].气象科学,2002,22(2):197-204. |
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| 作者姓名： | 顾亚进 唐洵昌 |
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| 作者单位： | 1. 南京大学大气科学系,南京,210093
2. 江苏省气象台,南京,210008 |
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| 摘 要： | 本文应用卫星云图与数值模拟结果对2000年6月2日发生的一次影响江苏的江淮气旋暴雨过程进行研究分析，阐述了这次暴雨过程表现的MCS基本特征。分析表明：MCS的形成可以由几个中β尺度对流云或对流带开始，在特定的环境场中汇合成合并；在其发展过程中必须维持湿度平流，低层到中层有暖平流，骨强偏南风急流伸向形成区，同时在其东北方向有一支高空西风急流相耦合；低层的辐合、整层凝结潜热的释放、垂直运动的增强、高层的辐散引起的正反馈机制是MCS发展的动因。
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| 关 键 词： | MCS 卫星云图 数值模拟 |
| 修稿时间： | 2001年10月9日 |
SYNTHETICAL ANALYZING CHARACTERISTICS OF A MCS BY USING MESOSCALE MODEL SIMULATION AND GOES INFRARED CLOUD IMAGERY |
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| Gu Yajing,Dang Renqing,Tang Xunchang,Wei Jiansu.SYNTHETICAL ANALYZING CHARACTERISTICS OF A MCS BY USING MESOSCALE MODEL SIMULATION AND GOES INFRARED CLOUD IMAGERY[J].Scientia Meteorologica Sinica,2002,22(2):197-204. |
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| Authors: | Gu Yajing Dang Renqing Tang Xunchang Wei Jiansu |
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| Institution: | Gu Yajing 1 Dang Renqing 1 Tang Xunchang 2 Wei Jiansu 2 |
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| Abstract: | The main characteristics for a mososcale convective system in Huaihe River Basin have been studed by using mesoscale model simulation and satellite cloud images.By synthetical analyzing the evolution process,we find that the MCS formed in a relatively unstable environment.The initiation occurred in regions exhibiting convective cloud streets.It grew via merger of convective cells within clusters accompanying warm and moist advection from low-level to middle atmosphere.It gave an impulse to maturity of MCS that enhanced convergence between middle and lower layer and divergence within upper level,increased updraft and the change of vorticity and pseudo-equivalent potential temperature etc. |
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| Keywords: | MCS Satellite cloud imagery Numerical simulations |
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