Ocean Circulation (IMAGE) University of Washington Caption The global ocean “conveyor belt” circulation, shown in part here as red and blue lines, circulates cooler seawater below the surface and warmer seawater at the surface throughout the world’s oceans. The Atlantic Meridional Overturning Circulation is part of this system of global ocean currents. Credit NOAA Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.