How Does the High?Latitude Thermal Forcing in One Hemisphere Affect the Other Hemisphere?

Significant progress has been made in our understanding of extratropical impacts on the tropical climate via energetics framework. It is question whether impact thermal forcing one hemisphere would extend far into high-latitudes other hemisphere. We examine possibility pole-to-pole linkage atmospheric teleconnections by imposing a cyclic surface northern extratropics an aquaplanet slab ocean model. reveal synchronous temperature response between two poles mediated zonal-mean dynamics. A warming polar region leads to strengthened Hadley circulation unforced hemisphere, fluxing more momentum toward subtropics, thereby pulling eddy-driven jet equatorward. consequent anomalous descent over causes warming. The reaches 30% that forced inferring significance connection.