| 通辽市一次强对流天气的环流背景和雷达回波分析 |
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| 引用本文： | 乌文奇,佟建华,邹艳东,夏军.通辽市一次强对流天气的环流背景和雷达回波分析[J].内蒙古气象,2010(3):13-15. |
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| 作者姓名： | 乌文奇 佟建华 邹艳东 夏军 |
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| 作者单位： | 1. 通辽市气象局,内蒙古通辽,028000
2. 青龙山气象站,内蒙古,奈曼旗,028314 |
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| 摘 要： | 利用常规天气资料和新一代多普勒天气雷达资料产品,分析了2009年7月16日通辽市开鲁县、奈曼旗、科左中旗、科尔沁区遭受雷电、龙卷风、冰雹袭击的天气过程。结果表明：低层有较强的西南气流提供了丰富的水汽条件,中高层有弱冷平流,形成了不稳定的大气层结,为强对流的发展提供了有利的天气背景。同一条对流云带上的两个对流云团合并,在合并处有更强的对流云团,甚至龙卷发生。回波顶高度与反射率因子的强度有一定的对应关系,通常情况下回波顶高度越高,则反射率因子的强度越大,对流越强,发展越旺盛。
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| 关 键 词： | 强对流 对流云团合并 反射率因子 |
Circulation Background and Radar Echo Analysis of a Severe Convective Weather in Tongliao City |
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| Authors: | Wu Wenqi Tong Jianhua Zou Yandong Xia Jun |
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| Institution: | 1.Tongliao Meteorological Bureau, Tongliao 028000;2.Qinglongshan Meteorological Station, Naiman 028314) |
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| Abstract: | Using conventional synoptic data and new generation Doppler weather radar products, the synoptic process of lightning, tornado, hail were analyzed on July 16, 2009 in Kailu, Naiman, Kezuozhong county, Horqin district. The results showed that strong southwest air flow in low layer provided rich vapor condition, weak cold advection formed unstable atmospheric stratification in middle-high level, and provided favorable synoptic background for the development of severe convective weather. Two convective cloud clusters merged into a more strong one in same convective cloud band, and even formed tornado. There were some corresponding relations between echo top height and reflectivity factor, in normal case, the higher the echo top height, the stronger of reflectivity factors were, the higher the convection, the vigorous of development was. |
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| Keywords: | severe convective weather convective clusters combination reflectivity factor |
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