Eddy-induced meridional transport variability at ocean western boundary

Meridional transport variability induced by westward-propagating eddies impinging on the western boundary is investigated both analytically and numerically. A simple theory first developed in framework of reduced-gravity model which relates eddy-induced meridional to eddy thickness anomalies propagated into long Rossby waves, this followed a suite numerical experiments. It found that excite waves propagate equatorward along boundary, leads coherent overturning circulation (MOC) incident field. The magnitude duration MOC are variable irregular, ranging from less than 1 Sv over 5 10 days 100 days. Importantly, these lead considerable heat across latitudes, with implications for seasonal interannual climate prediction. • at ocean boundary. Eddies significant anomalies. These variability.