1. DLR, Institut für Physik der Atmosphäre, Oberpfaffenhofen, 82234 Wessling, Germany
2. School of Engineering, Cardiff University, Cardiff CF24 0DE, U.K.
3. Rolls-Royce plc, Derby DE24 8BJ, U.K.
4. QinetiQ, Cody Technology Park, Farnborough Hants GU14 OLX, U.K.
5. ONERA, 92320 Chatillon, France
6. Centre for Atmospheric Science (CAS), University of Manchester, Manchester M13 9PL, U.K.
7. Vienna University of Technology, 1060 Vienna, Austria
8. Artium Technologies, Sunnyvale, California 94086, United States
9. Manchester Metropolitan University, Manchester M15GD, U.K.