Temporal and spatial evolutions of electron density distribution in the ionosphere during a geomagnetic storm as seen in the GNSS-TEC and SuperDARN radar observations

Atsuki Shinbori1, Yuichi Otsuka1, Takuya Sori1, Takuya Tsugawa2 and Michi Nishioka3, (1)Nagoya University, Nagoya, Japan, (2)NICT, Koganei, Japan, (3)National Institute of Information and Communications Technology (NICT), Tokyo, Japan