Program and Agenda

Abstract

MODEL-DATA COMPARISON OF SURFZONE AND INNER-SHELF CIRCULATION DURING HB06

The coupled surfzone and inner-shelf COAWST modeling system is used to simulate waves, circulation, and temperature on the inner-shelf and surfzone near Huntington Beach in the Southern California Bight during the Aug.-Oct. 2006 HB06 experiment. Observations include inner-shelf moorings in 8-30 m depth measuring temperature and velocity profiles, a wave buoy in 20 m depth, and seven nearshore tripods in 0.5-4 m depth measuring waves, velocity, and temperature. Here, the COAWST modeling system utilizes the coupled ROMS and SWAN models configured in a nested pattern for the inner shelf and surfzone. The outermost boundary information is given by a 75 m grid resolution simulation of the ROMS UCLA. Grid nesting follows a two-way refinement with coarsest grid resolution of 35 m, with subsequent intermediate and child grids with resolution of 12 and 4 m, respectively, resolving inner-shelf and surfzone processes. Model results are validated against bulk wave parameters, mean flows, and temperature. These results are then used to investigate mechanisms for cross-isobath exchange across the region. Funded by ONR.

Authors

Kumar, N., Scripps Institute of Oceanography, USA, n2kumar@ucsd.edu

Feddersen, F., Scripps Institute of Oceanography, USA, falk@coast.ucsd.edu

Omand, M., Woods Hole Oceanographic Institute, USA, momand@whoi.edu

Uchiyama, Y., Department of Civil Engineering, Kobe University, Kobe, Japan, uchiyama@harbor.kobe-u.ac.jp

McWilliams, J., Institute of Geophysics and Planetary Physics, University of California, Los Angeles, USA, jcm@atmos.ucla.edu

Details

Oral presentation

Session #:027
Date: 2/28/2014
Time: 12:00
Location: 311

Presentation is given by student: No