El Niño - What causes El Nio To understand El Nio you've...

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NORMAL: A convection cell is driven by heat at the ocean surface. Water from the surface evaporates and the warm, moist water rises, pulling in cool, dry air, and creating a loop that transfers heat and moisture out of the hot zone. El Niño: During an El Niño, the hot spot moves east, creating two convection What causes El Niño? To understand El Niño, you've got to fathom the planetary "heat engine." Heat engines -- there's one in your car -- use heat to create motion. In your car, heat from burning gasoline creates motion so you can cruise for burgers. On Earth, heat from the sun warms the equator much more than the poles, and then the atmosphere and oceans move this heat toward the poles.
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cells and altering climate around the Pacific basin. Image source NOAA . The motion in the atmosphere is powered by heat from evaporating sea water. The warm, moist air rises, pulling in dry air and creating giant atmospheric loops called convection cells that transfer heat away from the equator.
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