1. Department of Aerospace Engineering Sciences; University of Colorado Boulder; Boulder Colorado USA
2. Laboratory for Atmospheric and Space Physics; University of Colorado Boulder; Boulder Colorado USA
3. Space Science and Applications, ISR-1; Los Alamos National Laboratory; Los Alamos New Mexico USA
4. Department of Earth, Planetary, and Space Sciences; University of California; Los Angeles California USA
5. Space Sciences Department; Aerospace Corporation; Los Angeles California USA