Atlantic Multidecadal Variability and North Atlantic Jet: A Multimodel View from the Decadal Climate Prediction Project

Abstract The influence of the Atlantic multidecadal variability (AMV) on North storm track and eddy-driven jet in winter season is assessed via a coordinated analysis idealized simulations with state-of-the-art coupled models. Data used are obtained from multimodel ensemble AMV± experiments conducted framework Decadal Climate Prediction Project component C. These performed by nudging surface Ocean to states defined superimposition observed anomalies onto model climatology. A robust extratropical response found form wave train extending Pacific Nordic seas. In warm phase AMV compared cold phase, typically contracted less extended poleward low-level shifted toward equator eastern Atlantic. Despite some features, picture an uncertain model-dependent emerges we demonstrate link between bias character response.