1. Institute of Space Physics and Applied Technology Peking University Beijing China
2. Institute for the Study of Earth, Oceans, and Space University of New Hampshire Durham NH USA
3. Department of Atmospheric and Oceanic Sciences University of California, Los Angeles Los Angeles CA USA
4. Center for Space Physics Boston University Boston MA USA
5. Space Science and Applications Group Los Alamos National Laboratory Los Alamos NM USA
6. Space Sciences Division at the New Mexico Consortium Los Alamos NM USA