1. Department of Marine Chemistry and Geochemistry; Woods Hole Oceanographic Institution; Woods Hole; Massachusetts; USA
2. Climate and Global Dynamics Division; National Center for Atmospheric Research; Boulder; Colorado; USA
3. Climate System Modeling Group; Lawrence Livermore National Laboratory; Livermore; California; USA
4. Nansen Environmental and Remote Sensing Center; Bergen; Norway
5. Laboratoire des Sciences du Climat et de l'Environnement; Gif sur Yvette; France
6. Earth Atmospheric and Planetary Sciences Department; Massachusetts Institute of Technology; Cambridge; Massachusetts; USA
7. Atmospheric and Oceanic Sciences Program; Princeton University; Princeton; New Jersey; USA
8. University of California, Los Angeles; Los Angeles; California; USA
9. Institute for Global Change Research; Yokohama; Japan
10. Climate and Environmental Physics, Physics Institute; University of Bern; Bern; Switzerland
11. Laboratoire d'Océanographie Dynamique et de Climatologie Paris; Paris; France
12. Max Planck Institut fuer Meteorologie; Hamburg; Germany
13. Commonwealth Science and Industrial Research Organization; Hobart; Australia
14. Laboratoire d'Etudes en Gophysique et Ocanographie Spatiales; Toulouse; France
15. University of Liege; Liege; Belgium
16. Pennsylvania State University; State College; Pennsylvania; USA
17. Alfred Wegener Institute for Polar and Marine Research; Bremerhaven; Germany
18. George Deacon Division and Department of Oceanography, Southampton Oceanography Centre; University of Southampton; Southampton; England