| 一次弓形回波中超级单体发展造成的大风、冰雹天气分析 |
| |
| 引用本文： | 吴哲红,陈贞宏,储丽君,冯新建.一次弓形回波中超级单体发展造成的大风、冰雹天气分析[J].贵州气象,2012,36(2):1-6. |
| |
| 作者姓名： | 吴哲红 陈贞宏 储丽君 冯新建 |
| |
| 作者单位： | 1. 贵州省安顺市气象局,贵州安顺,561000
2. 贵州省镇宁县气象局,贵州镇宁,561200 |
| |
| 基金项目： | 贵州省气象局气象科技开放研究基金黔气科合KF〔2009〕12号资助 |
| |
| 摘 要： | 利用Micaps常规资料、自动站资料及灾情调查资料、雷达回波资料等,综合分析了2011年4月15日出现在安顺市的大风、冰雹天气,此次天气直接触发系统是地面辐合线。通过对加密自动站的数据分析表明此次过程是一次典型的飑线过程。对多普勒雷达资料的分析进一步表明是一次＂后续线＂发展型飑线影响,其中有超级单体风暴产生,弓形回波前最凸起部位前侧＂v＂型缺口处的强辐合入流造成镇宁站的大风,弓形回波特征减弱时后部弱回波通道中的下击暴流造成西秀区岩腊乡和紫云县猫营镇大风灾害。这两次大风灾害发生于强对流系统不同的发展阶段,产生的机制有所不同。
|
| 关 键 词： | 大风 冰雹 飑线 弓形回波 超级单体 |
A weather analysis of strong winds and hail developed by a supercell with a bow echo |
| |
| WU Zhe-hong,CHEN Zhen-hong,CHU Ii-jun,FENG xin-jian.A weather analysis of strong winds and hail developed by a supercell with a bow echo[J].Journal of Guizhou Meteorology,2012,36(2):1-6. |
| |
| Authors: | WU Zhe-hong CHEN Zhen-hong CHU Ii-jun FENG xin-jian |
| |
| Institution: | 1 (1.Anshun Meteorological Office,Guizhou Province,Anshun 561000 2.Zhenning Meteorological Office,Guizhou Province,Zhenning 561200) |
| |
| Abstract: | Using micaps conventional data,automatic weather station data and disaster survey data,the radar echo data,etc,analyzed the high winds、hail disasters occurred in Anshun City 15 April 2011,the results showed that: the surface frontal line was near the slot line and the shear line,The southern area of the positive vorticity advection in the warm and moist air lift,High and low level jet coupling enhanced the upward motion,the direct trigger system was surface convergence. The through analysis of the automatic observation station data showed it was a typical squall line process.Based on the Doppler weather radar data,a detailed analysis showed that it was a "follow-up line " squall line process,the most strong storm hitted Anshun City from northwest to southeast,once the strong echo layer growed to the level higher than-20 degrees level,hail occurred;The front "v" area at most protruding parts of the bow echo caused the strong wind in Zhenning station,the strongest echo appeared the "comma"shape,drape and other supercell echo characteristics,In the period of the bow echo’ development to weaken,a mesocyclone developed in middle level,so the judgement of a supercell storm was developping was made.when the bow echo Weakened,a back weak echo channel feature appeared,In the weak echo channel the supercell produce tornadoes which caused downburst winds disaster caused in maoying town in ziyun county.The two strong wind disasters developed at different stages of convective systems,the mechanisms are different. |
| |
| Keywords: | Strong Wind Hail Squall Line Tornado Mesocyclone |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
