JpGU-AGU Joint Meeting 2020

Presentation information

[E] Poster

M (Multidisciplinary and Interdisciplinary) » M-SD Space Development & Earth Observation from Space

[M-SD46] Effects of lightning, severe weather and tropical storms

convener:Mitsuteru Sato(Department of Cosmoscience, Hokkaido University), Yoav Yair(Interdisciplinary Center Herzliya), Xiushu Qie(Institute of Atmospheric Physics, Chinese Academy of Sciences), Yukihiro Takahashi(Department of Cosmosciences, Graduate School of Science, Hokkaido University)

[MSD46-P04] An observational study on thunder cloud activities over Tama, Tokyo based on atmospheric electrostatic field measurements - Case study for the hail storm event in May 4, 2019 -

★Invited Papers

*Jun-Ichi Hamada1, Jun Matsumoto1, Tomoshige Inoue1, Masashi Kamogawa2, Yukihiro Takahashi3 (1.Faculty of Urban Environmental Sciences, Tokyo Metropolitan University, 2.Global Center for Asian and Regional Study, University of Shizuoka, 3.Department of Cosmosciences, Graduate School of Science, Hokkaido University )

Keywords:Thunder cloud, Heavy rainfall, Atmospheric electrostatic field

In order to monitor lightning activities and development of thunder clouds, we have established an observational network with electromagnetic and electrostatic field measurements over the Tokyo metropolitan area since 2016. In the early summer and summer seasons of 2019, we observed atmospheric electrostatic field with the electric field monitor (BOLTEK ELF-100) at Hachioji campus of Tokyo Metropolitan University and the surrounding area. In the afternoon of May 4, 2019, hail and heavy rainfall were observed in a wide area including the observational sites. Form the X-band Multi-Parameter radar observation, thunder clouds had developed with the height of 10 km or more near the observational site at around the time of hail was observed. The electrostatic field measurement detected frequent lightning around the peak of hail events and the electrostatic field fluctuations due to developing/approaching of the thunder clouds. At the meeting, we will discuss the relationship between atmospheric electrostatic field variations and thundercloud development processes more detail.

This study was supported by TMU Strategic Research Fund (President Selected) of Tokyo Metropolitan University and Japan Science and Technology Agency (JST) and Japan International Cooperation Agency (JICA) under SATREPS.