Robert J Strangeway, University of California Los Angeles, IGPP/EPSS, Los Angeles, CA, United States, Christopher T Russell, University of California Los Angeles, Department of Earth Planetary and Space Sciences, Los Angeles, CA, United States, Janet G Luhmann, University of California Berkeley, Space Sciences Laboratory, Berkeley, CA, United States, Thomas Earle Moore, NASA Goddard Space Flight Ctr, Greenbelt, MD, United States and Stanislav V Barabash, Swedish Inst Space Physics, Kiruna, Sweden