1. Laboratory for Atmosphere and Space Physics University of Colorado Boulder Boulder CO USA
2. Climate and Space Sciences and Engineering Department University of Michigan Ann Arbor MI USA
3. Instituto de AstrofÃsica de Andalucía‐CSIC Granada Spain
4. Jet Propulsion Laboratory California Institute of Technology Pasadena CA USA
5. Department of Astronomy New Mexico State University Las Cruces NM USA
6. Department of PhysicsEastern Michigan University Ypsilanti MI USA