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6-12

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Global Ocean Circulation

In this video from NOVA: “Earth From Space,” learn about patterns of global ocean circulation, which distribute heat around the planet. Differences in the density of water masses drive large-scale ocean currents. Dense water forming over the continental shelf of Antarctica is exported to the adjacent deep ocean, creating streams of very cold water that spread northward along the sea floor into the global oceans. Visualizations show the constant motion and flow of ocean currents. The ocean and the atmosphere are closely connected and are responsible for maintaining Earth's relatively stable climate, providing a hospitable environment for life.

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