There is one master ocean current that is also the drive belt of our weather systems. what is this current called?

Ocean currents are located at the ocean surface and in deep water below 300 meters. There are surface ocean current (horizontal and vertical currents) and deep ocean currents. Deep ocean currents are part of the global-scale circulation system, also called the global conveyor belt and play a key role in distributing heat energy and regulating weather and climate.