Recent Results of the GNSS Total Electron Content Measurements for the Ionospheric Disturbances using Global Receiver Networks

Yuichi Otsuka1, Atsuki Shinbori1, Takuya Sori2, Michi Nishioka3 and Septi Perwitasari4, (1)Nagoya University, Institute for Space-Earth Environmental Research, Nagoya, Japan, (2)Nagoya University, Nagoya, Japan, (3)NICT National Institute of Information and Communications Technology, Tokyo, Japan, (4)NICT National Institute of Information and Communications Technology, Koganei, Japan