1. Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder CO USA
2. High Altitude Observatory National Center for Atmospheric Research Boulder CO USA
3. Ionospheric Physics Stoughton MA USA
4. NOAA‐SEC and CIRES University of Colorado Boulder Boulder CO USA
5. Aerospace and Ocean Engineering Virginia Polytechnic Institute and State University Blacksburg VA USA
6. Center for Space Physics Boston University Boston MA USA