| ANALYSIS OF CLOUD-TO-GROUND LIGHTNING CHARACTERISTICS IN MESOSCALE STORM IN BELIING AREA |
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| 作者姓名： | 葛正谟 言穆弘 GuoChangming 郭昌明 张广庶 |
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| 作者单位： | Lanzhou Institute of Plateau Atmospheric Physics Academia Sinica，Lanzhou 730000，Lanzhou Institute of Plateau Atmospheric Physics，Academia Sinica，Lanzhou 730000，Lanzhou Institute of Plateau Atmospheric Physics，Academia Sinica，Lanzhou 730000，Lanzhou Institute of Plateau Atmospheric Physics，Academia Sinica，Lanzhou 730000，Lanzhou Institute of Plateau Atmospheric Physics，Academia Sinica，Lanzhou 730000 |
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| 基金项目： | supported by grants from State Planning Commission under Grants No.75-09-02-19 |
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| 摘 要： | The research indicates that there is a positive correlation between the negative CG flash rate and the area of radarecho with its reflectivity being equal to or greater than 30 dBz in the mesoscale convective system in Beijing area.A max-imum of the positive CG flash rate exists at both the initial and the dissipating stages.The CG flashes are usually locatednear but not within the high reflectivity center.The negative flashes are associated with.the positions of the updraft re-gion,and with the regions of wind convergence and wind shear.Generally,the negative CG flashes are concentrative andthe positive ones are dispersive.
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ANALYSIS OF CLOUD-TO-GROUND LIGHTNING CHARACTERISTICS IN MESOSCALE STORM IN BELIING AREA |
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| Ge Zhengmo Yan Muhong Guo Changming Zhang Guangshu Lanzhou Institute of Plateau Atmospheric Physics,Academia Sinica,Lanzhou.ANALYSIS OF CLOUD-TO-GROUND LIGHTNING CHARACTERISTICS IN MESOSCALE STORM IN BELIING AREA[J].Acta Meteorologica Sinica,1992(4). |
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| Authors: | Ge Zhengmo Yan Muhong Guo Changming Zhang Guangshu Lanzhou Institute of Plateau Atmospheric Physics Academia Sinica Lanzhou |
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| Institution: | Ge Zhengmo Yan Muhong Guo Changming Zhang Guangshu Lanzhou Institute of Plateau Atmospheric Physics,Academia Sinica,Lanzhou 730000 |
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| Abstract: | The research indicates that there is a positive correlation between the negative CG flash rate and the area of radar echo with its reflectivity being equal to or greater than 30 dBz in the mesoscale convective system in Beijing area.A max- imum of the positive CG flash rate exists at both the initial and the dissipating stages.The CG flashes are usually located near but not within the high reflectivity center.The negative flashes are associated with.the positions of the updraft re- gion,and with the regions of wind convergence and wind shear.Generally,the negative CG flashes are concentrative and the positive ones are dispersive. |
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| Keywords: | CG(cloud-to-ground)lightning mesoscale convective system radar echo evolution of lightning activity |
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