| 雷达回波顶高（ET）产品在广西冰雹云识别中的应用研究 |
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| 引用本文： | 张正国,邹光源,刘丽君,程鹏.雷达回波顶高（ET）产品在广西冰雹云识别中的应用研究[J].气象研究与应用,2014,35(4):89-92. |
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| 作者姓名： | 张正国 邹光源 刘丽君 程鹏 |
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| 作者单位： | 广西区人工影响天气办公室,广西南宁,530022 |
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| 基金项目： | 广西壮族自治区人工影响天气办公室自立课题项目“冰雹云综合识别技术研究” |
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| 摘 要： | 利用广西2009至2012年降雹样本资料和新一代天气雷达回波顶高（ET）产品,对广西冰雹云回波顶高变化特征进行统计分析,结果显示广西冰雹云的ET整体呈现明显的阶段性变化特征,降雹时间和ET值达到最大值时间基本一致。冰雹云量化识别指标分别为：2月份回波顶高≥8km且回波顶高与0℃层高度差36.1km;3-4月份回波顶高≥10km且回波顶高与0℃层高度差≥6.1km;5月份回波顶高≥13且回波顶高与0℃层高度差38.1km。降雹直径与冰雹云ET值和特征层高度差值成正相关关系,可作为估计降雹直径的一个重要参考依据。
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| 关 键 词： | 回波顶高(ET) 冰雹云 识别指标 人工防雹 |
Application of Radar echo top (ET) products in the hail cloud recognition in Guangxi |
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| Zhang Zheng-guo,Zou Guang-yuan,Liu Li-jun,Peng Cheng.Application of Radar echo top (ET) products in the hail cloud recognition in Guangxi[J].Journal of Guangxi Meteorology,2014,35(4):89-92. |
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| Authors: | Zhang Zheng-guo Zou Guang-yuan Liu Li-jun Peng Cheng |
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| Institution: | ( Guangxi Weather Modification Office, Nanning Guangxi 530022) |
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| Abstract: | Based on hail sample data from 2009 to 2012 and new generation weather radar echo top（ET） product in Guangxi,characteristics of hail cloud echo top changes were analyzed.The results show that ET of hail cloud present the obvious phase change characteristics,hailing time and ET value maximum time are basically identical.Hail cloud quantitative identification index are：echo top ≥ 8 km in February and the height between echo top and 0 ℃ layer acuity ≥6.1 km;echo top ≥ 10 km from March to Apirl and the height between echo top and 0 ℃ layer acuity ≥6.1 km;echo top ≥13 km in May and the height between echo top and 0 ℃.layer acuity ≥8.1 km.The diameter of the hail and hail cloud ET value and height difference between characteristic layers are positively correlated,which can be used as important reference for the diameter of hail. |
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| Keywords: | echo top（ET） hail cloud recognition index hail suppression |
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