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Environmental Science

How Thermohaline Circulation Redistributes Heat Across Ocean Basins

Quick fact

The entire thermohaline circulation takes about 1,000 years to complete one full cycle: water sinking in the North Atlantic eventually rises to the surface again in the Pacific and Indian Oceans.

Why this is interesting

You step into a warm ocean current thousands of kilometers away from the equator, while a cold, salty stream flows deep beneath you in the opposite direction. How does the ocean, seemingly vast and static, move heat across the planet?