摘要
利用合肥新一代天气雷达从2001年至2005年的中气旋产品,对中气旋产生的时间、空间和各种特征值进行相关统计分析,发现持续时间在3个体扫以上的中气旋与雷雨大风和龙卷有很好的对应关系,通过对典型强风过程分析,得出了底高、顶高和最强切变高度变化、最强切变与灾害性天气发生的对应关系,为预报员及时准确预报雷雨大风、龙卷提供参考依据。
By using the Vmax mesocydone products of new generation radar of Hefei, the occurrence time, spatial distribution and a variety of characteristic values were statistically analyzed. It is discovered that the Vmax me.so cyclone which lasts more than three volumescannings is well corresponds to the thunderstorm and gale. By analyzing the typical processes of gale, the relationship of the variations in the height of echo base, echo top and severely shear with the occurrence of disaster weather was derived. It is valuable to the operator to make a forecast of thunderstorm and gale timely and accurately.
出处
《气象》
CSCD
北大核心
2007年第11期16-20,共5页
Meteorological Monthly
基金
国家自然科学基金项目"基于多普勒天气雷达观测的中国超级单体风暴研究"(40575014)
安徽省"十一"五科技攻关项目(06013140B)
中国气象局新技术推广项目"强对流天气临近预报系统"(CMATG2007M35)共同资助
关键词
中气旋
底高
顶高
最强切变
强对流天气
vmax-mesocyclone height of the base height of the top severely shear
