Your question: How do El Nino and La Niña affect climate quizlet?

How does El Nino affect climate quizlet?

The increase or decrease of what makes it warmer or colder. El Nino Southern Oscillation, trade winds weaken & warm surface water moves toward South America. Diminished fisheries off South America, drought in western Pacific, increased precipitation in southwestern North America, fewer Atlantic hurricanes.

How does La Niña affect the climate of the Pacific Ocean quizlet?

The Eastern Pacific Ocean’s temperature decreases during La Nina. It is still warmer than our ocean but compared to an average year, the water is cooler. … The Atlantic Ocean’s temperature increases during La Nina. It is still cooler than the Eastern Pacific, but compared to an average year, the water is warmer.

How does La Niña affect weather?

What is La Nina? … During a La Nina event, the changes in Pacific Ocean temperatures affect the patterns of tropical rainfall from Indonesia to the west coast of South America. These changes in tropical rainfall patterns affect weather patterns throughout the world.

How does El Niño affect the climates in the mid Pacific region?

During El Niño, the surface winds across the entire tropical Pacific are weaker than usual. Ocean temperatures in the central and eastern tropical Pacific Ocean are warmer than average, and rainfall is below average over Indonesia and above average over the central or eastern Pacific.

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What is La Nina quizlet oceanography?

La Nina. –A cooling of the ocean surface off the western coast of South America, occurring periodically every 4 to 12 years and affecting Pacific and other weather patterns.

What happens during El Nino quizlet?

Where does El Nino primarily occur? … During El Nino however, the pressure changes causing trade winds to diminish and warm water to move eastward instead of westward along the equator. This causes the traditionally cold waters along the coast of west South America to become warmer.

When El Nino occurs quizlet?

This occurs when the land is warmer than the sea. This creates a low pressure over the land and a high pressure of the sea. The wind blows from the high pressure over the sea to the low pressure over the land.