主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报 ›› 2021, Vol. 37 ›› Issue (4): 128-133.doi: 10.3969/j.issn.1673-503X.2021.04.018

• 论文 • 上一篇    下一篇

基于卫星资料的大连地区强对流天气闪电活动特征

邹耀仁(),王赟*(),王淑一,徐丹   

  1. 大连市防雷减灾中心, 辽宁 大连 116001
  • 收稿日期:2021-04-20 出版日期:2021-08-30 发布日期:2021-09-10
  • 通讯作者: 王赟 E-mail:53863821@qq.com;wangyun1795@163.com
  • 作者简介:邹耀仁, 男, 1962年生, 高级工程师, 主要从事天气预报、预警方面的研究, E-mail: 53863821@qq.com
  • 基金资助:
    辽宁省气象局课题“基于多源资料的大连及近海雷电预警技术研究(2021SXB04)

Characteristics of lightning activity during severe convective weather in Dalian area based on satellite data

Yao-ren ZOU(),Yun WANG*(),Shu-yi WANG,Dan XU   

  1. Lightning Protection and Disaster Reduction Center of Dalian, Dalian 116001, China
  • Received:2021-04-20 Online:2021-08-30 Published:2021-09-10
  • Contact: Yun WANG E-mail:53863821@qq.com;wangyun1795@163.com

摘要:

利用FY-4卫星云顶亮温(Cloud Top Temperature,CTT)资料和雷达回波资料,分析了2019年6-9月大连地区的闪电活动特征,重点分析了该地区2019年9月4日的一次强对流天气闪电活动特征与雷达回波及CTT之间的相关性。结果表明:此次过程雷暴起始于大连东南方向。在雷暴初始阶段,以云闪为主,云闪高度主要集中在7-12 km。闪电活动主要集中在雷达回波强度>30 dBz的区域,对应的云顶高度超过了8 km。闪电活动与FY-4卫星CTT之间存在较好的相关性,闪电主要发生在CTT为240-250 K左右区域。对2019年5-8月大连地区雷达与闪电活动进行量化分析,发现闪电活动主要集中于雷达组合反射率39.38 dBz附近区域,对应的云顶高度为8.21 km。

关键词: 三维雷电定位, 雷达回波, 云顶亮温

Abstract:

Using the cloud top temperature (CTT) data retrieved from FY-4 satellite and radar echo data, we analyzed the characteristics of lightning activity in Dalian from June to September of 2019, focusing on the analysis of the correlation between the characteristics of lightning activity and radar echo and CTT in severe convective weather in this region on September 4, 2019. The results showed that the thunderstorm in this process started from the southeast of Dalian. In the initial stage of thunderstorms, cloud flashes are dominant, and the height of cloud flashes is mainly concentrated in 7-12 km. Lightning activity is mainly concentrated in the area where the radar echo intensity is greater than 30 dBz, and the corresponding cloud top height exceeds 8 km. There is a good correlation between lightning activity and CTT retrieved from the FY-4 satellite. Lightning mainly occurs in the area where the CTT is around 240-250 K. A quantitative analysis of the radar and lightning activity in Dalian from May to August of 2019 found that the lightning activity is mainly concentrated in the area near the radar combined reflectivity of 39.38 dBz, and the corresponding cloud top height is 8.21 km.

Key words: 3D lightning location, Radar echo, Cloud top temperature(CTT)

中图分类号: