1. Center for Space Physics and Department of Astronomy Boston University Boston MA USA
2. Center for Space Physics and Department of Electrical and Computer Engineering Boston University Boston MA USA
3. Department of Atmospheric and Oceanic Sciences University of California Los Angeles CA USA
4. Cooperative Programs for the Advancement of Earth System Science University Corporation for Atmospheric Research Boulder CO USA
5. Institute for Space‐Earth Environmental Research Nagoya University Nagoya Japan
6. Physics Department University of New Brunswick Fredericton New Brunswick Canada