1. Department of Physics University of Texas at Arlington Arlington TX USA
2. High Altitude Observatory National Center for Atmosphere Research Boulder CO USA
3. William B. Hanson Center for Space Sciences University of Texas at Dallas Richardson TX USA
4. Aerospace Engineering Sciences University of Colorado Boulder Boulder CO USA
5. National Center for Environmental Information (NCEI) National Oceanic and Atmospheric Administration (NOAA) Boulder CO USA
6. The Johns Hopkins University Applied Physics Laboratory Laurel MD USA