Abstract
Ocean General Circulation Models (OCGM) have been used for ocean
forecasts and reanalysis in the past; successfully reproducing realistic
large scale features such as Western Boundary Currents (WBC) which
evolve slowly in time. Recent developments of three dimensional OCGM’s
include the incorporation of tidal forcing embedded in the numerical
integration. With the inclusion of higher frequency tidal forcing it is
now possible to study the impact of tides on the larger scale features
of the ocean reproduced in the OCGM’s such as WBC’s through comparison
of simulations with and without tides. We compare two 1/12.5°
simulations of the Hybrid Coordinate Ocean Model (HYCOM) and report on
differences in the mean position, transports, and warm/cold core eddy
production in the Gulf Stream and Kuroshio Current and their extensions
across the Atlantic and Pacific Oceans.