HR: 16:45h
AN: OS44A-05    [Abstracts]
TI: Island Wakes in the Southern California Bight
AU: * Dong, C
EM: cdong@atmos.ucla.edu
AF: IGPP, University of California,Los Angeles, 3637 Geology Bldg., IGPP/UCLA 405 Hilgard Ave, Los Angeles, CA 00095 United States
AB: The oceanic circulation in the Southern California Bight (SCB) is significantly characterized by its complexity in the topography, especially the presence of a group of islands. The island wakes of both atmosphere and ocean in SCB are recorded in the satellite remote sensing images and field observational data. The Regional Oceanic Model System (ROMS) is applied to study the effect of the islands on the regional circulation. The 2002 MM5-reanalyzed wind (2km in the spacial resolution) is used to force the ocean model. The wind island wake is well presented in the high resolution wind. The analysis of the ROMS results shows the evolution of the island wake and the eddy propagation downstream of islands. The influence of eddy shed in island wakes on the SCB regional circulation is also reflected in the energy balance. The results are also consistent with our previous idealized studies. The change in the vertical mixing and transport due to the wake has significant influence on the local biological environment.
DE: 4255 Numerical modeling
DE: 4520 Eddies and mesoscale processes
DE: 4528 Fronts and jets
DE: 4568 Turbulence, diffusion, and mixing processes
SC: Ocean Sciences [OS]
MN: 2005 Joint Assembly