1. Birkeland Centre for Space Science University of Bergen Bergen Norway
2. Max‐Planck Institute for Solar Systems Research Göttingen Germany
3. Swedish Institute of Space Physics Uppsala Sweden
4. Belgian Institute of Aeronomy Brussels Belgium
5. Department of Arctic Geophysics University Centre in Svalbard Longyearbyen Norway
6. Center for Atmospheric and Space Sciences Utah State University Logan Utah USA
7. Science and Research Communications Vanderbilt University Nashville Tennessee USA
8. Department of Geophysics University of Oslo Oslo Norway
9. Department of Physics University of Oslo Oslo Norway
10. Department of Atmospheric, Oceanic and Space Sciences University of Michigan Ann Arbor Michigan USA