1. Department of Atmospheric and Oceanic Sciences University of California Los Angeles California USA
2. Institute of Geophysics and Planetary Physics/Earth, Planetary and Space Sciences University of California Los Angeles California USA
3. Space Science and Applications Group Los Alamos National Laboratory Los Alamos New Mexico USA
4. Department of Physics and Astronomy University of Iowa Iowa City Iowa USA
5. Institute for the Study of Earth, Oceans, and Space University of New Hampshire Durham New Hampshire USA
6. Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder Colorado USA
7. The Aerospace Corporation Los Angeles California USA