Ezra Huscher, Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, Fran Bagenal, Univ Colorado, Boulder, CO, United States, Robert J Wilson, University of Colorado Boulder, Boulder, CO, United States, Frederic Allegrini, Southwest Research Institute San Antonio, San Antonio, TX, United States, Rob W Ebert, Southwest Research Institute, Space Science and Engineering, San Antonio, TX, United States and John E P Connerney, NASA Goddard Space Flight Center, Greenbelt, MD, United States