1. Laboratory for Atmospheric and Space Physics University of Colorado Boulder Colorado USA
2. The Johns Hopkins University Applied Physics Laboratory Laurel Maryland USA
3. Department of Atmospheric, Oceanic and Space Sciences University of Michigan Ann Arbor Michigan USA
4. Office of Space Research and Technology Academy of Athens Athens Greece
5. Department of Physics and Astronomy University of California Los Angeles California USA
6. Department of Terrestrial Magnetism Carnegie Institution of Washington Washington District of Columbia USA
7. Lamont‐Doherty Earth Observatory Columbia University Palisades New York USA