Structure and Evolution of Meso-scale Flows in the Nightside Auroral Ionosphere during Storms and Substorms

Toshi Nishimura, Boston University, Boston, MA, United States, Larry R Lyons, University of California Los Angeles, Department of Atmospheric and Oceanic Sciences, Los Angeles, CA, United States, Bill Bristow, Pennsylvania State University Main Campus, University Park, PA, United States, Eric Donovan, University of Calgary, Calgary, AB, Canada, Vassilis Angelopoulos, University of California Los Angeles, Department of Earth, Planetary, and Space Sciences, Los Angeles, United States and Nozomu Nishitani, ISEE, Nagoya University, Nagoya, Japan