| 甘肃中部强对流天气多普勒雷达和闪电特征个例研究 |
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| 引用本文： | 端木礼寅,李照荣,张强,康凤琴.甘肃中部强对流天气多普勒雷达和闪电特征个例研究[J].高原气象,2004,23(6):764-772. |
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| 作者姓名： | 端木礼寅 李照荣 张强 康凤琴 |
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| 作者单位： | 中国气象局,兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,甘肃,兰州,730020 |
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| 基金项目： | 科技部社会公益研究专项"西北地区人工防雹消雹技术"项目(2002DIB10046)，甘肃省人工增雨防雹作业体系工程建设科技开发项目2002人影 1 01专题共同资助 |
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| 摘 要： | 利用雷达和闪电资料对2004年5月15日甘肃中部的一次强对流天气过程进行了综合分析。通过分析,得到了冰雹降水的一些中小尺度多普勒雷达特征和闪电与雷雨、冰雹发生、发展的关系。在强对流系统发生、发展的过程中,当回波强度>40dBz时就伴随有闪电发生。冰雹云中存在空间上很靠近的强度梯度和速度梯度大值区;含水量最大值区与强度最大值区相对应;在径向速度图上表现出低层辐合、高层辐散的特征。
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| 关 键 词： | 回波雨带 回波强度 径向速度 闪电 |
| 文章编号： | 1000-0534(2004)06-0764-09 |
A Case Study on Dopple Radar and Lightning Characteristic of Severe Convective Weather in Central Gansu |
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| DUANMU Liyin,LI Zhao-rong,ZHANG Qiang,KANG Feng-qin,Lanzhou Institute of Arid Meteorology,China Meteorological Administration,Lanzhou ,China.A Case Study on Dopple Radar and Lightning Characteristic of Severe Convective Weather in Central Gansu[J].Plateau Meteorology,2004,23(6):764-772. |
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| Authors: | DUANMU Liyin LI Zhao-rong ZHANG Qiang KANG Feng-qin Lanzhou Institute of Arid Meteorology China Meteorological Administration Lanzhou China |
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| Institution: | DUANMU Liyin,LI Zhao-rong,ZHANG Qiang,KANG Feng-qin,Lanzhou Institute of Arid Meteorology,China Meteorological Administration,Lanzhou 730020,China) |
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| Abstract: | The relations of Dopple radar characteristics and lightning, thunderstorm evolvement and hail developing of a severe convective weather process occurred on 15 May 2004 have been synthetically analyzed using Dopple radar and lightningdata. The results show that the lightning would occur if the radar echo intensitywas more than 40 dBz during the developing of severe convective weather system. There is a maximun value area that is a maximum of echo intensity and meridional velocity gradient that are close in space in hail cloud. The maximun value area of water content is corresponding to that of echo intersity. The bottom level is convergent and the high level is divergent in the meridiondal velocity chart. |
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| Keywords: | Echo rain belt Echo intensive Radial velocity Lightning |
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