1. Program for Climate Model Diagnosis and Intercomparison, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
2. Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
3. National Center for Atmospheric Research, Boulder, CO 80303, USA
4. Deutsches Zentrum für Luft-und Raumfahrt, Institut für Physik der Atmosphäre, Oberpfaffenhofen, D-82234 Wessling, Germany
5. National Center for Atmospheric Research
6. Program for Climate Model Diagnosis and Intercomparison, Lawrence Livermore National Laboratory
7. University of Birmingham, Edgbaston, Birmingham B15 2TT, UK