LI Min,GAO Yi,LAO Xiaoqing,et al.Spatiotemporal Distribution of 2D and 3D Lightning LocationData in Hainan Island and Comparative Analysis[J].Journal of Chengdu University of Information Technology,2024,39(04):477-480.[doi:10.16836/j.cnki.jcuit.2024.04.013]
海南岛二维、三维闪电定位数据的时空分布和对比分析
- Title:
- Spatiotemporal Distribution of 2D and 3D Lightning LocationData in Hainan Island and Comparative Analysis
- 文章编号:
- 2096-1618(2024)04-0477-04
- Keywords:
- lightning location data; two-dimensional ground flash; three-dimensional ground flash; three-dimensional cloud flash; daily variation; monthly distribution
- 分类号:
- P427
- 文献标志码:
- A
- 摘要:
- 为分析比较不同类型雷电定位系统的探测数据和探测效率,利用安装在海南岛的ADTD(二维)和DDW1(三维)两套雷电定位系统的观测数据以及海口、东方、万宁的雷达回波资料,应用归闪、回波过滤以及数据统计的方法,对2021年4-10月海南岛二维、三维闪电定位数据进行质控处理。通过对质控后的数据进行分析,二维、三维地闪和三维云闪的总次数分别为40685次、49134次、96767次,三维闪电定位系统的探测灵敏度和探测效率明显优于二维闪电定位系统。对比分析两套系统的闪电时空分布,结果表明:二维、三维地闪和三维云闪的密度分布较为相似; 二维地闪以白沙为高值中心,三维地闪以儋州为高值中心,三维云闪以儋州和白沙为高值中心; 二维、三维地闪和三维云闪的日变化特征相似,峰值时间同为15:00-16:00; 二维地闪、三维云闪的月变化呈双峰曲线特征,峰期分别在7月和9月,7月为主峰期; 三维地闪的月变化呈多峰曲线特征,峰期在5月、7月和9月,7月为主峰期。
- Abstract:
- To analyze and compare the detection data and detection efficiency of different types of lightning positioning systems, the observation data of ADTD(2D)and DDW1(3D)lightning positioning systems installed in Hainan Island and the radar echo data of Haikou, Dongfang, and Wanning are used. the methods of flash return、echo filtering and data statistics are applied. The 2D and 3D lightning location data of Hainan Island from April to October 2021 were subjected to quality control processing. Through the analysis of the quality control data, the total number of 2D, and 3D ground flashes and 3D cloud flashes were 40685, 49134, and 96767 times respectively. The detection sensitivity and detection efficiency of the 3D lightning location system were significantly better than that of the 2D lightning location system. The results show that the density distribution of 2D ground flash and 3D cloud flash are similar. The 2D ground flash takes Baisha as high-value center, the 3D ground flash takes Danzhou as high-value center, and the 3D cloud flash takes Danzhou and Baisha as high-value center. The diurnal variation characteristics of 2D, 3D ground flash, and 3D cloud flash are similar, and the peak time is 15:00-16:00. The monthly variation of two-dimensional ground flash and three-dimensional cloud flash showed a bimodal curve, and the peak period was in July and September, respectively, with July being the main peak period. The monthly variation of the three-dimensional ground lightning is characterized by a multi-peak curve, and the peak period is in May, July, and September, with July being the main peak period.
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备注/Memo
收稿日期:2023-03-28
基金项目:海南省自然科学基金资助项目(2019RC361、421MS103、422MS151); 海南省气象局科研资助项目(hnqxZC202111)
通信作者:高燚.E-mail:qjgaogi@qq.com