1. Department of Atmospheric and Oceanic Sciences UCLA Los Angeles California USA
2. University Corporation for Atmospheric Research Boulder Colorado USA
3. Institute of Space Physics and Applied Technology Peking University Beijing China
4. Space Science and Applications Group Los Alamos National Laboratory Los Alamos New Mexico USA
5. Space Sciences Division New Mexico Consortium Los Alamos New Mexico USA
6. Institute for the Study of Earth, Oceans, and Space University of New Hampshire Durham New Hampshire USA
7. Department of Physics and Astronomy University of Iowa Iowa City Iowa USA
8. School of Physics and Astronomy University of Minnesota Minneapolis Minnesota USA
9. SRI International Menlo Park California USA