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投稿时间：2006-10-30 修订日期：2007-02-01
投稿时间：2006-10-30 修订日期：2007-02-01
中文摘要: 利用NCEP再分析资料、T213分析资料对解除2006年川渝特大高温伏旱的两次降温
、降雨过程进行物理量诊断分析。结果表明：500hPa环流形势发生转变，高空冷平流及地面冷空气的入
侵对暴雨的启动至关重要。低层偏南暖湿气流的加强及风速脉动对暴雨的发生发展有重要作
用；850hPa水汽辐合，高层辐散及上升运动的加强与雨强和雨区有较好的对应关系。
Abstract:Based on the NCEP reanalysis data and T213 data, the two typical heavy
rainfall which occured in Sichuan and Chongqing in summer,2006 was analyzed. Th
e result shows that the variation of 500hpa circulation, and the intrusion of co
ld advection at upper air and the cold air at low level are favorable to the occ
urrence of the heavy rainfall. On the other hand, the strengthen of the low leve
l jet, wind speed pulsation are key to the heavy rainfall. The intensity and loc
ation of the heavy rainfall are related to the convergence of water vapour in 85
0hpa, divergence at high level and the strengthen of the ascending motion。
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引用文本：
汪丽,青泉,谢娜,徐琳娜,2007.2006年川渝两次久旱转雨过程对比分析[J].气象,33(4):53-57.
Wang Li,Qing Quan,Xie Na,Xu Linna,2007.A Comparison Analysis of Two Processes for Drouth Turning Heavy Rainfall in Sichuan and Chongqing, 2006[J].Meteor Mon,33(4):53-57.
汪丽,青泉,谢娜,徐琳娜,2007.2006年川渝两次久旱转雨过程对比分析[J].气象,33(4):53-57.
Wang Li,Qing Quan,Xie Na,Xu Linna,2007.A Comparison Analysis of Two Processes for Drouth Turning Heavy Rainfall in Sichuan and Chongqing, 2006[J].Meteor Mon,33(4):53-57.