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RISOn the Equilibrium-State Roll Vortices and Their Effects in the Hurricane Boundary Layer
Publisher: American Meteorological Society
Abstract: n this study, the authors numerically simulate roll vortices (rolls) generated by the inflection-point instability in the hurricane boundary layer (HBL). The approach is based on embedding a two-dimensional high-resolution ...
Hurricane-Generated Depth-Averaged Currents and Sea Surface Elevation
Publisher: American Meteorological Society
Abstract: A theory of the depth-averaged currents and sea surface elevation generated by a moving hurricane in a stratified ocean with flat bottom is presented. Using a scale analysis of the depth-integrated momentum and continuity ...
On the Generation of Roll Vortices due to the Inflection Point Instability of the Hurricane Boundary Layer Flow
Publisher: American Meteorological Society
Abstract: orizontal roll vortices, or rolls, are frequently observed in the hurricane boundary layer (HBL). Previous studies suggest that these rolls can be generated by the inflection point instability of the HBL flow. In this study ...
On the Characteristics of Linear-Phase Roll Vortices under a Moving Hurricane Boundary Layer
Publisher: American Meteorological Society
Abstract: AbstractPrevious theoretical and numerical studies only focused on the formation of roll vortices (rolls) under a stationary and axisymmetric hurricane. The effect of the asymmetric wind structure induced by the storm ...
Limitation of One-Dimensional Ocean Models for Coupled Hurricane–Ocean Model Forecasts
Publisher: American Meteorological Society
Abstract: Wind stress imposed on the upper ocean by a hurricane can limit the hurricane?s intensity primarily through shear-induced mixing of the upper ocean and subsequent cooling of the sea surface. Since shear-induced mixing is ...
Improving the Ocean Initialization of Coupled Hurricane–Ocean Models Using Feature-Based Data Assimilation
Publisher: American Meteorological Society
Abstract: Coupled hurricane?ocean forecast models require proper initialization of the ocean thermal structure. Here, a new feature-based (F-B) ocean initialization procedure in the GFDL/University of Rhode Island (URI) coupled ...
Real-Case Simulations of Hurricane–Ocean Interaction Using A High-Resolution Coupled Model: Effects on Hurricane Intensity
Publisher: American Meteorological Society
Abstract: In order to investigate the effect of tropical cyclone?ocean interaction on the intensity of observed hurricanes, the GFDL movable triply nested mesh hurricane model was coupled with a high-resolution version of the Princeton ...
Impact of a Warm Ocean Eddy’s Circulation on Hurricane-Induced Sea Surface Cooling with Implications for Hurricane Intensity
Publisher: American Meteorological Society
Abstract: pper oceanic heat content (OHC) in advance of a hurricane is generally superior to prestorm sea surface temperature (SST) for indicating favorable regions for hurricane intensification and maintenance. OHC is important ...
Ocean Data Assimilation and Initialization Procedure for the Coupled GFDL/URI Hurricane Prediction System
Publisher: American Meteorological Society
Abstract: A new ocean data assimilation and initialization procedure is presented. It was developed to obtain more realistic initial ocean conditions, including the position and structure of the Gulf Stream (GS) and Loop Current ...
The Effect of Wind–Wave–Current Interaction on Air–Sea Momentum Fluxes and Ocean Response in Tropical Cyclones
Publisher: American Meteorological Society
Abstract: In this paper, the wind?wave?current interaction mechanisms in tropical cyclones and their effect on the surface wave and ocean responses are investigated through a set of numerical experiments. The key element of the ...