1. Program for Climate Model Diagnosis and Intercomparison (PCMDI), Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
2. Department of Atmospheric Sciences, University of Washington, Seattle, WA 98195, USA.
3. Earth and Planetary Sciences, University of California, Santa Cruz, CA 95064, USA.
4. Remote Sensing Systems, Santa Rosa, CA 95401, USA.
5. Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
6. Center for Satellite Applications and Research, NOAA/NESDIS, College Park, MD 20740, USA.