1. Department of Atmospheric and Oceanic SciencesUniversity of California Los Angeles California USA
2. Department of Physics and AstronomyUniversity of Calgary Calgary Alberta Canada
3. Department of Earth, Planetary and Space SciencesUniversity of California Los Angeles California USA
4. Laboratoire de Physique des PlasmasCNRS/Ecole Polytechnique/UPMC/Paris‐Sud Palaiseau France
5. Institut für Geophysik und extraterrestrische PhysikTechnischen Universität Braunschweig Braunschweig Germany
6. Space Sciences LaboratoryUniversity of California Berkeley California USA