The deep Southern Ocean (SO) circulation plays a key role in the storage and release of CO(2) in Earth’s climate system. The uptake and release of CO(2) strongly depend on the redistribution of well and poorly ventilated deep ocean water masses. Recently, evidence was found for possible stronger Pacific deep water overturning and subsequent intrusion into the SO during periods of reduced AMOC. Here, we present new authigenic neodymium isotope data (ɛNd) from two sites within the Atlantic …