1. Climate and Space Sciences and Engineering DepartmentUniversity of Michigan Ann Arbor MI USA
2. Planetary Environments Laboratory, Code 699NASA Goddard Space Flight Center Greenbelt MD USA
3. CRESSTUniversity of Maryland, Baltimore County Baltimore MD USA
4. Physics and Astronomy DepartmentEastern Michigan University Ypsilanti MI USA
5. Instituto de Astrofísica de Andalucía/CSIC Granada Spain