An analysis of vertical total electron content (TEC) estimates from the MIT Madrigal database is performed for the regions surrounding the eye of Hurricane Michael (2018). Absolute and detrended TEC values show a noticeable increase during the tropical cyclone (TC) relative to fluctuations at the same locations prior to the storm. Direct comparisons of TEC perturbation magnitudes to the number of lightning flashes in $1°\times 1°$ latitude-longitude boxes surrounding the eye of Hurricane Michael for each 5 min period of 10 October 2018 showed no visible trends. A similar comparison of the vertical TEC fluctuations with respect to the rainfall rates showed a positive correlation as the rainfall rate increased from light to moderate. However, a decrease in TEC perturbations were observed for the most intense rainfall rates. Additionally, ionosonde measurements in the Gulf of Mexico Region reveal an increased production of waves with periods less than 90 min after TC formation. These results indicate that the measured TEC fluctuations are most likely caused by atmospheric gravity waves produced by Hurricane Michael, which supports previous research.

对麻省理工学院飓风（2018）眼睛周围区域的麻省理工学院Madrigal数据库的垂直总电子含量（TEC）估计值进行了分析。相对绝对值和趋势下降的TEC值显示，在热带气旋（TC）期间，相对于暴风雨前相同位置的波动，TEC值显着增加。TEC摄动量与雷电闪烁次数的直接比较$\mathrm{1个}°\times \mathrm{1个}°$在2018年10月10日的每5分钟内，围绕迈克尔飓风眼睛的纬度-经度框没有显示出明显的趋势。垂直TEC波动相对于降雨率的类似比较显示，随着降雨率从轻度增加到中度，呈正相关。但是，在最强的降雨率下，TEC扰动减小了。此外，在墨西哥湾地区的离子探空仪测量显示，在TC形成后不到90分钟的时间里，电波的产生量增加了。这些结果表明，测得的TEC波动很可能是由迈克尔飓风产生的大气重力波引起的，这支持了先前的研究。