Japan Geoscience Union Meeting 2023

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[E] Online Poster

P (Space and Planetary Sciences ) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

Mon. May 22, 2023 10:45 AM - 12:15 PM Online Poster Zoom Room (2) (Online Poster)

convener:Huixin Liu(Earth and Planetary Science Division, Kyushu University SERC, Kyushu University), Yuichi Otsuka(Institute for Space-Earth Environmental Research, Nagoya University), Loren Chang(Department of Space Science and Engineering, National Central University), Yue Deng(University of Texas at Arlington)


On-site poster schedule(2023/5/21 17:15-18:45)

10:45 AM - 12:15 PM

[PEM12-P16] Ionospheric Disturbances Observed During Super Typhoon Chanthu using low-latitude TEC data

*Mengqi Shao1, Yanshi Huang1 (1.Harbin Institute of Technology, Shenzhen)

Keywords:Typhoon Chanthu, TEC, ionospheric disturbances, gravity waves


The impact of Super Typhoon Chanthu on the ionosphere is investigated using low-latitude TEC observations. The temporal variations of TEC, ROT, ROTI are calculated using data from Madrigal database to illustrate the ionospheric disturbances in the low-latitude regions during Typhoon Chanthu. The amplitude, period, and velocity of the Travelling Ionospheric Disturbances (TIDs) induced by the gravity waves generated by Typhoon Chandhu are further analyzed using the high-resolution data from Central Weather Bureau. We find that the bandpass-filtered TEC disturbance varies between -0.2 and 0.2 TECu with a period of 10 minutes and speed of 127 m/s. These preliminary results imply that the energy transfer from low-altitude atmosphere to ionosphere can occur through upward-propagating gravity waves during Typhoon events.