Impact of Gulf Stream Warm-Core Rings on Slope Water Intrusion into the Gulf of Maine

Abstract Intruding slope water is a major source of nutrients to sustain the high biological productivity in Gulf Maine (GoM). Slope intrusion into GoM affected by Stream warm-core rings (WCRs) impinging onto nearby shelf edge. This study combines long-term mooring measurements, satellite remote sensing data, an idealized numerical ocean model, and linear coastal-trapped wave (CTW) model examine impact WCRs on through Northeast Channel. Analysis sea surface height temperature data shows that region off hotspot ring activities. A significant relationship found between interannual variations activities bottom salinity at Channel, suggesting importance modulating variability intruding water. reveals enhanced bottom-intensified along-channel flow following impingements Numerical simulations qualitatively reproduce observed WCR impingement processes associated episodic enhancement Diagnosis result indicates baroclinic CTWs excited ring–topography interaction are responsible for episodically intensified subsurface inflow, which carries more GoM. impinges edge northeast Channel tends generate stronger cause