[M-IS27] Atmospheric electricity: Atmospheric electricity and climate change

[MIS27-P01] A study on development process of summer thunderstorms using dual polarized phased array weather radar and lightning location system using LF band

*Hiroshi Kikuchi¹, Kai Oikawa¹, Yasuhide Hobara¹, Yoshitaka Nakamura², Eiichi Yoshikawa⁵, Takeshi Morimoto³, Tomoo Ushio⁴ (1.The University of Electro Communications, 2.Kobe City College of Technology, 3.KINDAI UNIVERSITY, 4.Osaka University, 5.Japan Aerospace Exploration Agency)

Keywords:thunderstorms, Lightning, Radar

In Japan, a X-band dual polarized phased array weather radar (DP-PAWR), which simultaneously transmits pulses of horizontal and vertical polarized radiation, was developed and installed in December 2017. The DP-PAWR has a scanning scheme similar to the PAWR, which also performs mechanical and electronic scanning at azimuth and elevation angles, respectively. In 2020, our research group (Japan Aerospace Exploration Agency, Kobe City College of Technology, Osaka University, and Kinki University, and UEC are included) has installed 13 LF sensor network to obtain the 3D location of lightning discharges using the time-of-arrival location technique in the Kanto area in Japan. The system provides the 3D location of lightning discharges using the time-of-arrival location technique. The mean distance between stations is approximately 20-30 km.
In this presentation, we will show the study of simultaneous lightning and precipitation observations with the DP-PAWR and 3D Lightning location system. The relationship between the initiation of lightning discharges and development process of the thunderstorm is also discussed.