1. LATMOS/IPSL; UVSQ Université Paris-Saclay, UPMC Univ. Paris 06, CNRS; Guyancourt France
2. Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
3. The Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
4. Institut für Geophysik und Meteorologie; Universität zu Köln; Cologne Germany
5. Carl Sagan Institute, Department of Astronomy and CCAPS; Cornell University; Ithaca New York USA
6. Centre d'Etudes de la Neige; Grenoble France
7. Laboratoire d'Etudes du Rayonnement et de la Matière en Astrophysique et Atmosphères; Observatoire de Paris-Meudon; Paris France
8. Royal Observatory of Belgium; Uccle Belgium