Tropical winds push warm water north along east North-American coast {conveyor belt}. It becomes denser at it cools and sinks near Greenland, allowing flow to continue. Europe receives warm water that returns south in deep water along east Atlantic Ocean. If melted snow enters North Atlantic, the cold fresh water prevents warmer salty water from sinking, and conveyor belt turns off. Cold, dry winds flow east around north.
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Date Modified: 2022.0224