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Front Cover: Simulation of a Turbulent Ocean

Part of the highest Reynolds number, highest resolution ocean simulation calculated by Jeffrey B. Weiss at the University of Colorado and colleagues (see story) on NPACI resources including Blue Horizon. Vortex structures covering a wide range of scales populate the region south of the main jet, which flows across the basin from left to right. Small eddies and vortices, some as small as 10 km in diameter, are evident in the flow on the southern, northern, and western boundaries of the basin. Some of these endure for more than a year in the simulations. Animations reveal direct vortex-vortex mergers that limit the growth of the overall vortex population.