1. U.S. Geological Survey Cascades Volcano Observatory Vancouver WA USA
2. Advanced Environmental Monitoring (AEM) Germantown MD USA
3. Electromagnetic Sciences and Cognitive Space Applications Los Alamos National Laboratory Los Alamos NM USA
4. Vaisala Inc. Louisville CO USA
5. Now at Department of Agronomy University of Wisconsin Madison WI USA
6. NASA Marshall Space Flight Center Huntsville AL USA
7. National Oceanic and Atmospheric Administration (NOAA)/National Environmental Satellite, Data, and Information Service (NESDIS) Center for Satellite Applications and Research Advanced Satellite Products Branch Madison WI USA
8. NASA Langley Research Center Hampton VA USA
9. Science Systems and Applications, Inc Hampton VA USA