1. NASA Goddard Space Flight Center Greenbelt Maryland USA
2. GFZ German Research Centre for Geosciences Potsdam Germany
3. The Johns Hopkins University Applied Physics Laboratory Laurel Maryland USA
4. Institute of Geophysics and Planetary Physics and Earth and Space Sciences Department University of California Los Angeles California USA
5. NOAA Space Weather Prediction Center Boulder Colorado USA
6. Department of Climate and Space Sciences and Engineering University of Michigan Ann Arbor Michigan USA
7. High Altitude Observatory UCAR Boulder Colorado USA
8. Space Research Institute Austrian Academy of Sciences Graz Austria
9. Korea Astronomy and Space Science Institute Daejeon Korea
10. Physics Department University of New Hampshire Durham New Hampshire USA