1. Department of Earth System Science; UC Irvine California USA
2. Institutt for Geofysikk; University of Oslo; Oslo Norway
3. Swiss Federal Institute of Technology; Lausanne Switzerland
4. Max Planck Institute for Meteorology; Hamburg Germany
5. Joint Research Centre, Environment Institute; Ispra Italy
6. The Hadley Centre, UK Met Office; Bracknell United Kingdom
7. Institut Pierre Simon Laplace; CEA-CNRS; Gif-sur-Yvette France
8. Geophysical Fluid Dynamics Laboratory; NOAA; Princeton New Jersey USA
9. Dept of Earth & Planetary Sciences; Harvard U.; Cambridge Maryland USA
10. Max Planck Institute for Chemistry; Mainz Germany
11. Belgian Institute for Space Aeronomy; Brussels Belgium
12. Dipartimento di Fisica, U.L'Aquila; Coppito, L'Aquila Italy
13. Centre for Atmos. Sci.; Cambridge U.; Cambridge United Kingdom
14. Royal Netherlands Meteorological Inst.; De Bilt The Netherlands
15. Frontier Research System for Global Change; Yokohama Japan