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。
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.
出处
《内蒙古气象》
2010年第3期13-15,共3页
Meteorology Journal of Inner Mongolia
关键词
强对流
对流云团合并
反射率因子
severe convective weather
convective clusters combination
reflectivity factor
