1. NASA Goddard Space Flight Center Greenbelt MD USA
2. The Catholic University of America Washington DC USA
3. Max Planck Institute for Solar System Research Göttingen Germany
4. Center for Geospace StudiesSRI International Menlo Park CA USA
5. Laboratoire de Météorologie DynamiqueIPSL, Sorbonne Université, École Polytechnique, CNRS Palaiseau France
6. National Center for Atmospheric Research Boulder CO USA
7. Department of Physics and AstronomyGeorge Mason University Fairfax VA USA