1. Space Vehicles Directorate Air Force Research Laboratory Kirtland AFB New Mexico USA
2. Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder Colorado USA
3. Department of Aerospace Engineering Sciences University of Colorado Boulder Boulder Colorado USA
4. NASA Goddard Space Flight Center Greenbelt Maryland USA
5. Department of Physics and Astronomy Dartmouth College Hanover New Hampshire USA
6. Center for Cooperative Research in the Environmental Sciences University of Colorado Boulder Boulder Colorado USA
7. National Center for Environmental Information NOAA Boulder Colorado USA