1. Topic 1.5 Numerical Model Guidance IWTC-V (Cairns, Australia, 2002) Shuyi S. Chen 1 and Naomi Surgi 2 1 University of Miami/RSMAS (USA) 2 NOAA/NCEP/EMC (USA) Working Group: S. Braun, I. Ginis, C.-S. Liu, K.Walsh

2. Model physics Air-sea and air-land coupling Vortex initialization (inner-core data assimilations) Environmental effects Model configuration Operational Modeling Efforts

3. High-resolution atmospheric modeling (impact on intensity and quantitative precipitation forecasting) Environmental effects on tropical cyclones Moist convective processes Atmospheric boundary layer Air-sea interface (atmosphere-wave-ocean coupling) Research Modeling Efforts

4. Structure and Intensity Changes (e.g., eyewall replacement cycle) Quantitative Precipitation Forecasting Special Focus

6. Uncoupled

7. Hurricane Floyd (1999)

9. Sensitivity to Model Resolution

12. 15 km 1.67 km

14. 5 km

16. Sensitivity to Physical Parameterizations

17. B Braun and Tao (2000)

19. Hurricane Bonnie

20. (Simple Ice) (GSFC)