High-Wind Drag Coefficient Based on the Tropical Cyclone Simulated With the WRF-LES Framework

The numerical simulation of tropical cyclones has been increasingly conducted using the advanced Weather Research and Forecast (WRF) model with large-eddy (LES) technique. Given importance boundary wind profile for vertical exchange horizontal momentum between atmosphere ocean, drag coefficient was evaluated in WRF-LES framework at finest grid spacing 37 m. In absence TC–ocean interaction, derived from simulated does not show leveling off or decrease strong conditions. increases increasing near-surface speed agrees well extrapolation Large Pond formula It is suggested that structure LES technique may be unrealistic when interaction fully considered.