A simple, reduced gravity model (1.5 layers) was forced with an idealized wind stress. The wind stress, shown below, was purely zonal, centered at 140W, EQ. The magnitude tapers to the north and south as a Gaussian (Rossby radius, R, decay scale) and to the east and west (4R). The model was run for five years, and the results were taken from the final year. Four movie sequences show the model sea level, in centimeters, with color shading, and the applied wind stress as vectors. Each movie runs through three loops: first, the large domain is shown; next, the eastern Pacific is highlighted; finally, the throughflow region is expanded. The difference in each panel is the frequency of the wind forcing. The movie frames are one per three days, one year in total length (except for the final movie, which is one frame per six days, and runs for two years). To play the movie, click on the image.

Zonal wind stress was applied in the eastern equatorial Pacific, centered at 140W,EQ.

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The four experiments were forced with winds with a 30 day period (top), 180 day period (second), 365 day period (third) and four year period (bottom). Click on the following links to view the resulting sea level from each experiment.

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"Energy" was computed as the integral over one forcing period of the free surface squared (similar to manuscript equation 28).