Atmospheric scientists refer to the east-west seesaw in surface air pressure across the equatorial Pacific that accompanies changes in the Walker circulation as the

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The east-west seesaw in surface air pressure across the equatorial Pacific that accompanies changes in the Walker circulation is known as the Southern Oscillation. El Niño and La Niña are climatic events that occur as a result of changes in the ocean-atmosphere system in the tropical Pacific, but they are not directly related to the Southern Oscillation. A storm surge is a temporary rise in sea level during a storm, and is also not related to the Southern Oscillation.

Atmospheric Scientists Refer to the East-West Seesaw in Surface Air