[M-IS07] Effects of lightning, severe weather and tropical storms

[MIS07-01] Current status and prospects of ULAT/SATREPS

*Yukihiro Takahashi^1,2, Mitsuteru Sato^1,2, Hisayuki Kubota^1,2, Tetsuro Ishida^1,2, Ellison Castro³, Loren Jay Estrebillo³, Purwadi Purwadi⁴, Meryl Algodon¹, Gay Perez³, Joel Marciano⁵, Jun Matsumoto⁶, Jun-Ichi Hamada⁶ (1.Department of Cosmosciences, Graduate School of Science, Hokkaido University, 2.Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University, 3.University of the Philippines, Diliman, 4.BPPT, Indonesia, 5.PhilSA, Phlippines, 6.Tokyo Metropolitan University)

Keywords:ULAT, SATREPS, microsatellite, lightning, extreme weather, monitoring

Our projects of a SATREPS “ULAT” is to realize precise real-time monitoring and issuing alert for extreme weather, such as torrential rainfall or typhoon. We have been developing a ground observation network with lightning sensors and trying to establish semi real-time operation of micro-satellites to capture the typhoon and thunderstorms. In these projects, we apply two new technologies, that is, the lightning activity estimated by the ground-based lightning networks with 12 sites for VLF radio wave measurement in nation-wide of Philippines and with 50 sites for electrostatic field measurement in Metro Manila together with infrasound sensor and automated weather station, and the 3 dimensional capturing of thunderstorms by the on-demand operation of 50-kg micro-satellites, including the Philippine-developed satellites. We started ULAT project in 2017 and completed the installation of the ground lightning observation station with automated weather station about 70 percent of the original plan and started continuous recording of the data. Although, due to COVID-19, now the installation of ground station is stopping, we plan to carry out the work remotely making use of the latest IT devices. As for the satellite observation, we succeeded in reconstructing detailed 3-D cloud structure near the center of typhoon Maysak 2020 with camera onboard DIWATA-1. In this presentation we update the recent progress of the projects.
This research was supported by Science and Technology Research Partnership for Sustainable Development (SATREPS), Japan Science and Technology Agency (JST) / Japan International Cooperation Agency (JICA).