1. Aerospace Engineering Sciences University of Colorado Boulder Boulder Colorado USA
2. High Altitude Observatory, NCAR Boulder Colorado USA
3. Applied Physics Laboratory Johns Hopkins University Laurel Maryland USA
4. Birkeland Centre of Excellence University of Bergen Bergen Norway
5. National Geophysical Data Center, NOAA Boulder Colorado USA
6. Atmospheric, Oceanic and Space Sciences University of Michigan Ann Arbor Michigan USA
7. NASA Goddard Space Flight Center Greenbelt Maryland USA