1. ISR-2, Los Alamos National Laboratory, Los Alamos, New Mexico;
2. NASA Marshall Space Flight Center, Huntsville, Alabama;
3. Texas A&M University, College Station, Texas;
4. Meteorological Service Singapore, Singapore;
5. South African Weather Service, Pretoria, South Africa;
6. Holle Meteorology and Photography, Oro Valley, Arizona;
7. Institute of Atmospheric Physics, Czech Academy of Sciences, and Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic;
8. Department of Physics and Technology, Birkeland Centre for Space Science, University of Bergen, Bergen, Norway;
9. Polytechnic University of Catalonia, Barcelona, Spain;
10. Indian Institute of Tropical Meteorology, Pune, India;
11. University of Maryland, College Park, College Park, Maryland;
12. Universitat Rovira i Virgili, Tarragona, Spain, and University of East Anglia, Norwich, United Kingdom;
13. Arizona State University, Tempe, Arizona