2001号台风“黄蜂”路径电离层TEC异常分析

该文以2020年太平洋台风季首个被命名的风暴--强台风“黄蜂”为例,采用国际GNSS服务组织发布的全球垂直总电子含量数据,结合双线性插值、滑动时窗及四分位距的方法,分析台风发生发展过程前后,台风路径特征点上空电离层TEC的异常情况。研究发现,电离层异常集中发生在台风起编日及其前后各一日的时间,具体时段在0:00—10:00 UTC,异常属性全部为负异常,且扰动范围先增大后减小,综合判断认为2001号台风“黄蜂”是引起这几日台风路径上空电离层形扰的原因。

Taking the severe typhoon"Vongfong",the first storm in the Pacific typhoon season in 2020 ever named,as an example,this paper uses the global vertical total electron content data released by the international GNSS service organization and,adopting the methods of bilinear interpolation,sliding time window and quartile distance,analyzes the anomalies of ionospheric TEC over the characteristic points of typhoon track before and after the occurrence and development of typhoon.It is found that the ionospheric anomalies occur mainly in the days before and after the typhoon,the specific period is from 0:00 to 10:00 UTC,the anomaly properties are all negative anomalies,and the disturbance range increases at first and then decreases.According to a comprehensive judgment,Typhoon No.2001"Vongfong"is the cause of the ionospheric disturbance over the typhoon track these days.