Abstract
A new coupled ocean-wave model has been developed and tested as a new component of the Coupled Ocean/Atmosphere Mesoscale Prediction System (COAMPS(circle)). The modeling system is comprised of the Simulating WAves Nearshore (SWAN) wave model and the Navy Coastal Ocean Model (NCOM). The models are two-way coupled using the Earth System Modeling Framework (ESMF). The ocean model has been modified to incorporate the effect of the Stokes drift current, wave radiation stresses due to horizontal gradients of the momentum flux of surface waves, enhancement of bottom drag in shallow water, and enhanced vertical mixing due to Langmuir turbulence. The wave model ingests surface currents (wave-current interaction) and water levels. The system is designed to support the Navy's ocean forecast requirements for regional and coastal domains. Validation studies for the Florida Straits and Virginia coastal area are presented. The system will run at the Naval Oceanographic Office and at the Fleet Numerical Meteorology and Oceanography Center.
Highlights
The operational Navy requires accurate ocean and wave predictions to support search and rescue, anti-piracy initiatives, route planning, mine warfare, anti-submarine warfare, and amphibious operations
This paper addresses ocean-wave coupling in COAMPS
One worrisome feature is that the skill of the model is generally better near the center of the radar’s boresight, with sections D, E, J, and K having relatively high correlation values
Summary
Naval Research Laboratory Oceanography Division Stennis Space Center, MS 39529-5004. Office of Naval Research One Liberty Center 875 North Randolph Street, Suite 1425 Arlington, VA 22203-1995. Approved for public release, distribution is unlimited
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