| 2006年川渝两次久旱转雨过程对比分析 |
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| 引用本文： | 汪丽,青泉,谢娜,徐琳娜.2006年川渝两次久旱转雨过程对比分析[J].气象,2007,33(4):53-57. |
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| 作者姓名： | 汪丽 青泉 谢娜 徐琳娜 |
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| 作者单位： | 1. 四川省气象台,成都,610071
2. 成都市气象台 |
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| 基金项目： | 致谢：感谢成都信息工程学院李湘提供NCEP资料 |
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| 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。
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| 关 键 词： | 伏旱 暴雨 物理量场 |
| 收稿时间： | 2006/10/30 0:00:00 |
| 修稿时间： | 2006-10-302007-02-01 |
A Comparison Analysis of Two Processes for Drouth Turning Heavy Rainfall in Sichuan and Chongqing,2006 |
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| Wang Li,Qing Quan,Xie Na and Xu Linna.A Comparison Analysis of Two Processes for Drouth Turning Heavy Rainfall in Sichuan and Chongqing,2006[J].Meteorological Monthly,2007,33(4):53-57. |
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| Authors: | Wang Li Qing Quan Xie Na and Xu Linna |
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| Institution: | 1. Siehuan Meteorological Observatory, Chengdu 610071 ; 2. Chengdu Meteorological Office, Siehuan Province |
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| 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. The re.suit shows that the variation of 500hpa circulation, and the intrusion of cold advection at upper air and the cold air at low level are favorable to the occurrence of the heavy rainfall. On the other hand, the strengthen of the low level jet, wind speed pulsation are key to the heavy rainfall. The intensity and location of the heavy rainfall are related to the convergence of water vapour in 850hpa, divergence at high level and the strengthen of the ascending motion. |
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| Keywords: | drouth in summer heavy rainfall physical quantity field |
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