1. Department of Physics and Astronomy; University of Iowa; Iowa City; Iowa; USA
2. Institute of Atmospheric Physics; Prague; Czech Republic
3. Research Institute for Sustainable Humanosphere; Kyoto University; Uji, Kyoto; Japan
4. Department of Physics; Augsburg College; Minneapolis; Minnesota; USA
5. Science and Robotic Exploration Directorate; European Space Agency; Noordwijk; Netherlands
6. NASA Goddard Space Flight Center; Greenbelt; Maryland; USA
7. LPC2E; Université d'Orléans, CNRS; Orléans; France
8. Station de Radioastronomie de Nançay; Observatoire de Paris, CNRS; Nançay; France
9. Institut für Geophysik und Extraterrestrische Physik; Technische Universität Braunschweig; Braunschweig; Germany