Michel Moncuquet¹, Nicole Meyer-Vernet², Karine Issautier³, Milan Maksimovic⁴, Stuart Bale⁵, Marc Pulupa⁶, John W Bonnell⁶, Thierry Dudok de Wit⁷, Keith Goetz⁸, Peter Harvey⁶, Robert J MacDowall⁹ and David Malaspina¹⁰, (1)Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université de Paris, LESIA, Meudon, France, (2)CNRS, Observatoire de Paris, Paris Cedex 16, France, (3)CNRS, Observatoire de Paris, LESIA, Meudon, France, (4)LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université Paris Diderot, Sorbonne Paris Cité, Meudon, France, (5)University of California, Berkeley, Berkeley, CA, United States, (6)University of California, Berkeley, Space Sciences Laboratory, Berkeley, CA, United States, (7)LPC2E, CNRS and University of Orléans, Orléans, France, (8)University of Minnesota, Minneapolis, MN, United States, (9)NASA/Goddard Space Flight Center, Greenbelt, United States, (10)University of Colorado, Boulder, Laboratory for Atmospheric and Space Physics, Boulder, CO, United States