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投稿时间：2005-12-15 修订日期：2006-01-10
投稿时间：2005-12-15 修订日期：2006-01-10
中文摘要: 利用NCEP1°×1°的6小时分析资料、自动站加密雨量和常规观测等资料，对2005年6月17～21日江西省梅汛期发生的持续性暴雨过程进行天气动力学诊断分析。结果表明:这次暴雨过程是由9个中β尺度云团和12个中尺度雨团东移发展造成的。中低层辐合、高层辐散及上升运动的加强对中尺度对流云团和雨团加强发展有重要作用，与暴雨强度有很好的对应关系。在850hPa的西南急流中不断有急流核生成并发展东移，中尺度暴雨云团和雨团出现在急流核北侧约200km处。
中文关键词: 梅雨锋暴雨，β中尺度对流云团，诊断分析，低空急流
Abstract:Based on the reanalysis data (1°×1°, 4-times-a-day’s)of NCEP, the high-density automatic gauge’s rainfall data and the conventional meteorological data, a synoptic and dynamic diagnosis of the continuous rainfall event from June 17 to 21,2005 in Jiangxi Province is made. The results show the event was caused by 9 local meso-β scale cloud clusters and 12 eastward-moving and growing strong convective rain clusters. Low level convergence, upper level divergence and up-ward flows are very important to the intensification and maintain of the meso-β scale convective cloud clusters and rain clusters, therefore they are related well to the intensity of the heavy rain. The jet-cores appear, develop and move eastward continuously in the 850hPa southwest jet stream with the meso-scale cloud cluster and convective rain cluster in the 200km north of the jet-cores.
keywords: heavy rainfall,meso-β scale convective cloud cluster,diagnostic analysis,lower level jet stream
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引用文本：
尹洁,叶成志,吴贤云,郭文华,2006.2005年一次持续性梅雨锋暴雨的分析[J].气象,32(3):86-92.
,2006.Analysis of a Continuous Heavy Rainfall Event in 2005[J].Meteor Mon,32(3):86-92.
尹洁,叶成志,吴贤云,郭文华,2006.2005年一次持续性梅雨锋暴雨的分析[J].气象,32(3):86-92.
,2006.Analysis of a Continuous Heavy Rainfall Event in 2005[J].Meteor Mon,32(3):86-92.