1. Department of Earth System Science Stanford University Stanford CA USA
2. Geophysical Fluid Dynamics Laboratory Princeton NJ USA
3. Atmospheric and Oceanic Sciences Program Princeton University Princeton NJ USA
4. School of Marine and Atmospheric Sciences Stony Brook University Stony Brook NY USA
5. Now at School of Marine and Atmospheric Sciences Stony Brook University Stony Brook NY USA
6. SAIC Princeton NJ USA