Past exam of the physics of atmospheres and oceans course of the University of Oxford / 2021 / 6 / d / a

In the open-basin Sverdrup balance approximation,The maximum is at $y=0$. Evaluating the exact finite-friction solution instead gives its largest northward velocity at the eastern side of the equator, about $4.96\mathrm{m}{\mathrm{s}}^{-1}$. Thus the requested scale is roughly $5\mathrm{m}{\mathrm{s}}^{-1}$ northward; the exact model also resolves variation across the open basin.