| 2010年安徽沿江地区一次暴雨的中尺度特征分析 |
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| 引用本文： | 吴丹娃,严小静.2010年安徽沿江地区一次暴雨的中尺度特征分析[J].安徽农业科学,2011,39(5):2756-2759. |
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| 作者姓名： | 吴丹娃 严小静 |
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| 作者单位： | 1. 南京大学大气科学系,江苏南京,210093;安徽省气象局,安徽合肥,230061
2. 安徽省气象局,安徽合肥,230061 |
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| 摘 要： | 利用NCEP再分析资料对2010年7月12~13日沿江江南的一次暴雨过程进行了诊断分析,同时利用合肥多普勒天气雷达资料分析造成这次暴雨过程的中尺度特征。结果表明,造成强降水的直接原因是冷空气激发的中尺度降水系统。低空急流为强降水提供了源源不断的水汽和不稳定能量,高空急流造成的对称不稳定使中尺度上升运动加强。逆风区、中尺度气旋等中尺度特征与暴雨中心的生消变化有较好的对应关系。
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| 关 键 词： | 暴雨 急流 多普勒天气雷达 逆风区 |
Mesoscale Characteristics Analysis of a Heavy Rainfall along the Yangtze River Regions in Anhui in 2010 |
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| WU Dan-wa et al.Mesoscale Characteristics Analysis of a Heavy Rainfall along the Yangtze River Regions in Anhui in 2010[J].Journal of Anhui Agricultural Sciences,2011,39(5):2756-2759. |
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| Authors: | WU Dan-wa |
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| Institution: | WU Dan-wa et al (Department of Atmospheric Sciences,Nanjing University,Nanjing,Jiangsu 210093) |
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| Abstract: | The NCEP reanalysis data were used to analyze the heavy rainfall process what occurred along the Yangtze River regions in Anhui from July 12 to 13 in 2010.At the same time,the Doppler weather radar data were used to analyze the mesoscale characteristics in the heavy rainfall progress.The results indicated that the direct reason of heavy rainfall was mesoscale precipitation system excited by cold air.Low-level jet stream provided a steady water vapour and instability-energy.Symmetric instability what caused ... |
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| Keywords: | Heavy rainfall Jet stream Doppler weather radar Adverse wind areas |
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