1. Space Research Institute of RAS Moscow Russia
2. Max Planck Institute for Solar System Research Göttingen Germany
3. Department of Earth and Environmental Sciences Ludwig Maximilian University of Munich Munich Germany
4. Finnish Meteorological Institute Helsinki Finland
5. Department of Climate and Space Sciences and Engineering, College of Engineering University of Michigan Ann Arbor Michigan USA
6. Institut de Recherche en Astrophysique et Planétologie Université de Toulouse (UPS) Toulouse France
7. Centre National de la Recherche Scientifique Toulouse France