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气象:2007,33(11):16-20
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新一代天气雷达中气旋产品特征值统计和个例分析
(1.南京大学大气科学系,210093;2.安徽省气象台)
The Analysis of Mesocyclone Product from the Doppler Weather Radar
(1.Department of Atmospheric Science,Nanjing University, 210093;2. Anhui Meteorological Observatory;3.Anhui Meteorological Observatory)
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投稿时间:2007-04-26    修订日期:2007-08-23
中文摘要: 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。
中文关键词: 中气旋  底高  顶高  最强切变  强对流天气
Abstract:By using the Vmax mesocyclone products of new generation radar of Hefe i, the occurrence time, spatial distribution and a variety of characteristic val ues were statistically analyzed. It is discovered that the Vmax meso cyclone wh ich lasts more than three volume-scannings is well corresponds to the thundersto rm and gale. By analyzing the typical processes of gale, the relationship of th e variations in the height of echo base, echo top and severely shear with the oc currence of disaster weather was derived. It is valuable to the operator to mak e a forecast of thunderstorm and gale timely and accurately.
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基金项目: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
引用文本:
方翀,郑媛媛,2007.新一代天气雷达中气旋产品特征值统计和个例分析[J].气象,33(11):16-20.
Fang Chong,Zheng Yuanyuan,2007.The Analysis of Mesocyclone Product from the Doppler Weather Radar[J].Meteor Mon,33(11):16-20.