[1
]Laboratory for Atmospheric and Space Physics University of Colorado Boulder CO USA
[2
]Southwest Research Institute San Antonio TX USA
[3
]Department of Physics and Astronomy University of Texas at San Antonio San Antonio
TX USA
[4
]Department of Astrophysical Sciences Princeton University Princeton NJ USA
[5
]Space Research Corporation Annapolis MD USA
[6
]Goddard Space Flight Center Greenbelt MD USA
[7
]Jet Propulsion Laboratory/California Institute of Technology Pasadena CA USA