1. Space Research Institute of RAS Moscow Russia
2. Department of Space PhysicsMoscow Institute of Physics and Technology Moscow Russia
3. Finnish Meteorological Institute Helsinki Finland
4. Swedish Institute of Space Physics Uppsala Sweden
5. Max Planck Institute for Solar System Research Göttingen Germany
6. Department of Earth and Environmental SciencesLudwig Maximilian University of Munich Munich Germany
7. Institut de Recherche en Astrophysique et PlanétologieUMR 5277, Université de Toulouse (UPS), CNRS, CNES Toulouse France
8. Department of Climate and Space Sciences and EngineeringUniversity of Michigan Ann Arbor MI USA