Affiliation: | (1) NASA Goddard Space Flight Center, Greenbelt, MD, USA;(2) Max-Planck-Institut für extraterrestrische Physik, Garching, Germany;(3) Space and Atmospheric Physics, The Blackett Laboratory, Imperial College London, London, UK;(4) Department of Physics and Astronomy, The University of Iowa, Iowa City, IA, USA;(5) LPCE/CNRS and Université d' Orléans, France |