North Atlantic
gregladen | January 6, 2017You already know abut the North American Conveyor current. Briefly: The major ocean currents happen because the equatorial ocean is warmer, and since water (unlike land) can move (though not as fast as air) the dissipation of this heat across the surface of the Earth results in warm water moving, at the surface, north or south away from the Equator, where it loses its heat and finds it way back to the equatorial regions, usually as deeper, cooler water.
Conveniently, this process also involves increasing the salinity of the water far from the equator, as evaporating water becomes saltier.…