1. Department of Earth, Atmospheric, and Planetary Sciences Massachusetts Institute of Technology Cambridge MA USA
2. Jet Propulsion Laboratory California Institute of Technology Pasadena CA USA
3. The Johns Hopkins University Applied Physics Laboratory Laurel MD USA
4. Institute of Geophysics and Planetary Physics University of California Los Angeles CA USA
5. Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences Potsdam Germany
6. Department of Earth, Planetary, and Space Sciences University of California Los Angeles CA USA
7. Institute of Physics and Astronomy University of Potsdam Potsdam Germany
8. School of Earth and Space Exploration Arizona State University Tempe AZ USA