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Currents near the surface of Earth's oceans: Red lines depict the major warm currents; blue lines depict the major cool currents.

Bloom (2010) Global Climate Change: Convergence of Disciplines. Sinauer Associates.

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Atlantic meridional overturning circulation Last Updated on 2010-03-02 00:00:00 The Atlantic Meridional Overturning Circulation (AMOC) is a major current in the Atlantic Ocean, characterized by a northward flow of warm, salty water in the upper layers of the Atlantic, and a southward flow of colder water in the deep Atlantic. The AMOC is an important component of the Earth’s climate system. Topographic map of the Nordic Seas and subpolar basins with schematic circulation of surface currents (solid curves) and deep currents (dashed curves) that form a portion of the Atlantic meridional overturning circulation. Colors of curves indicate approximate temperatures. Source: R. Curry, Woods Hole Oceanographic Institution/Science/USGCRP. This ocean current system transports a substantial amount of heat energy from the tropics and Southern Hemisphere toward the North Atlantic, where the heat is then transferred to... More »