Langmuir Turbulence under Hurricane Gustav (2008)

Transient Evolution of Langmuir Turbulence in Ocean Boundary Layers Driven by Hurricane Winds and Waves

A large-eddy simulation (LES) model, which adopts wave-averaged equations with vortex force, is used to investigate Langmuir turbulence and ocean boundary layer (OBL) dynamics in high-wind hurricane conditions. The temporally evolving spatially asymmetric wind and wave Stokes drift velocity imposed in the LES are generated by a spectral wave prediction model adapted to Hurricane Frances traveli...

CloudSat measurements of landfalling hurricanes Gustav and Ike (2008)

[1] The spaceborne 94 GHz radar onboard the CloudSat polar orbiting satellite offers new opportunities in estimating parameters of precipitating cloud systems including hurricanes. CloudSat measurements can resolve the vertical extent of storms and hurricanes, thus providing a view of their complex structure. These measurements can be used to retrieve with high spatial resolution rainfall and i...

Impacts of Turbulence on Hurricane Intensity

Because of the multi-scale nature of hurricanes, the proposed large-eddy simulation work is also a challenging computational problem. A three-dimensional research cloud model (CM1) with horizontal grid stretching capability is used to conduct convergence test. The Weather Research and Forecasting (WRF) model is used as a weather-prediction model to examine the eddy-diffusion coefficients obtain...

Extreme waves under Hurricane Ivan.

Hurricane Ivan, a category 4 storm, passed directly over six wave-tide gauges deployed by the Naval Research Laboratory on the outer continental shelf in the northeastern Gulf of Mexico. Waves were observed with significant wave heights reaching 17.9 meters and maximum crest-to-trough individual wave heights of 27.7 meters (91 feet). Analysis suggests that significant wave heights likely surpas...

Renormalization Group Method Applied to Large Scale Langmuir Turbulence