1. Max Planck Institute for Meteorology; Hamburg Germany
2. Finnish Meteorological Institute; Helsinki Finland
3. Department of Physics; University of Oxford; Oxford UK
4. College of Engineering, Mathematics and Physical Sciences; University of Exeter; Exeter UK
5. School of Earth and Atmospheric Sciences; Georgia Institute of Technology; Atlanta Georgia USA
6. Istituto di Scienze dell'Atmosfera e del Clima, Consiglio Nazionale delle Ricerche; Rome Italy
7. Departamento de Fisica de la Tierra II; Universidad Complutense de Madrid; Madrid Spain
8. Department of Meteorology; University of Reading; Reading UK
9. Danish Meteorological Institute; Copenhagen Denmark
10. Istituto di Scienze dell'Atmosfera e del Clima, Consiglio Nazionale delle Ricerche; Torino Italy
11. Courant Institute of Mathematical Sciences; New York University; New York New York USA
12. Met Office Hadley Centre; Exeter UK
13. Department of Land, Air and Water Resources; University of California; Davis California USA
14. National Center for Atmospheric Research; Boulder Colorado USA
15. Department of Biology and Physics; Kennesaw State University; Kennesaw Georgia USA
16. CSIRO Marine and Atmospheric Research; Aspendale Victoria Australia
17. Goddard Institute for Space Studies, NASA; New York New York USA
18. School of Earth and Environmental Sciences; Seoul National University; Seoul South Korea
19. Japan Agency for Marine-Earth Science and Technology; Yokohama Japan
20. National Centre for Atmospheric Science; University of Reading; Reading UK