Coastal Engineering Educational Video Series: Hurricane Winds Speeds and Ocean Water Levels
Day 0: 18:00 August 24th, 2006
Simulation Metadata:
The hydrodynamic model Advanced Circulation model, ADCIRC, version 51.52.27 was employed to simulate water circulation through the numerical domain.
These simulations were performed on a numerical mesh built upon a modification of the FEMA region III mesh. This mesh has exactly the same domain than FEMA region III mesh, but they differ in the number of nodes (this mesh has 0.344 millions of nodes) and in the level of resolution (minimum resolution is approximately 200 m).
The primary parameters of the hurricanes, such as, position of the eye of the storm, radius of maximum wind, minimum central pressure, maximum wind speed, radii at specific wind speeds (34, 50, 60, 100 knots), and heading direction were extracted from the available Hurricane Data 2nd generation (HURDAT2) which is based upon the Automated Tropical Cyclone Forecast (ATCF). The wind velocity and the atmospheric pressure field driven by the storms were calculated based on the Holland gradient wind model [23]. Then, Garratt’s drag formulation was used to compute wind stress over water surface from the wind velocity.
Authors: Juan Garzon and Christine Wang
