Hong Zhao, University of Colorado at Boulder, Boulder, CO, United States, Daniel N Baker, University of Colorado, Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, Xinlin Li, University of Colorado Boulder, Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, Allison N Jaynes, University of Iowa, Iowa City, IA, United States, Shrikanth G Kanekal, NASA GSFC, Greenbelt, MD, United States and David Malaspina, University of Colorado, Boulder, Laboratory for Atmospheric and Space Physics, Boulder, CO, United States