VTR for Implementation of Wave-Ocean Coupling in COAMPS in both the Nearshore and Offshore Ocean
Abstract
Ocean-wave coupling within the Coupled Ocean Atmospheric Modeling System (COAMPS) is adapted to capture wave-driven circulation and mixing in shallow, nearshore environments including the surf zone. Enhancements to the ocean model, NCOM, include a depth dependent wave radiation stress, enhanced surface roughness, and an increased turbulent kinetic energy to account for mixing due to wave breaking. The wave roller energy is captured through the addition of a parametric roller model which introduces a lag in wave momentum transport due to wave breaking. Lastly, wave dissipation forcing is demonstrated as an alternative to wave radiation stress gradient forcing. Thorough testing and evaluation using idealized and field test cases demonstrate that the new wave forcing in NCOM produces a vertical distribution of surf zone currents and mixing that are consistent with observations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 07, 2020
- Accession Number
- AD1111150
Entities
People
- Cheryl A. Blain
- Jayaram Veeramony
- Kacey L. Edwards
- Paul J. Martin
- Timothy J. Campbell
Organizations
- United States Naval Research Laboratory