1. Department of Meteorology and Atmospheric Science The Pennsylvania State University University Park PA USA
2. RIKEN Center for Computational Science Kobe Japan
3. Institute of Industrial Science The University of Tokyo Kashiwa Japan
4. RIKEN Interdisciplinary Theoretical and Mathematical Sciences Program Kobe Japan
5. RIKEN Cluster for Pioneering Research Kobe Japan
6. Department of Atmospheric and Oceanic Science University of Maryland, College Park College Park MD USA
7. Graduate School of Science Kyoto University, Kyoto Kyoto Japan