1. Atmospheric, Oceanic and Planetary Physics; University of Oxford; UK
2. Laboratory of Atmospheric Physics; Aristotle University of Thessaloniki; Greece
3. NERC, National Centre for Atmospheric Science (NCAS); Oxford UK
4. GEOMAR Helmholtz Centre for Ocean Research; Kiel Germany
5. Christian-Albrechts Universität zu Kiel; Germany
6. Lunar and Planetary Laboratory; University of Arizona; Tucson USA
7. Max Planck Institute for Meteorology; Hamburg Germany
8. Departamento Fisica de la Tierra II; Universidad Complutense de Madrid; Spain
9. Physikalisch-Meteorologisches Observatorium, World Radiation Center; Davos Dorf Switzerland
10. Institute for Atmospheric and Climate Science, ETH; Zurich Switzerland
11. Nicholas School of the Environment; Duke University; Durham NC USA
12. Laboratory for Atmospheric Chemistry and Dynamics; Central Aerological Observatory; Moscow Russia