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What unusual event occurs during El Niño?
O
A. There is unusually low pressure in the western tropical Pacific.
B. The trade winds blow harder to the west.
C. The pressure gradient decreases.
O
D. Warm water flows south along the east coast of South America.

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Answer:

The person who answered above me is wrong. The correct answer is C. The pressure gradient decreases. Please, if you are going to answer a question, make sure it's correct.

An unusual event that occurs during El Niño is Warm water flows from the Western Tropical Pacific toward South America.

  • El Nino can be defined as a climate cycle typically in the Pacific Ocean which results in a change in the weather pattern globally. The climate cycle develops when the warm water from the western tropical region of the Pacific Ocean moves towards the east and finally along with the equator it moves towards the coast of South America.
  • During an El Niño event, the surface waters in the central and eastern Pacific oceans become significantly warmer than usual. That change is intimately tied to the atmosphere and the winds blowing over the vast Pacific.
  • Easterly trade winds (which blow from the Americas toward Asia) falter and can even turn around into westerlies. This allows great masses of warm water to slosh from the western Pacific toward the Americas.
  • It also reduces the upwelling of cooler, nutrient-rich waters from the deep—shutting down or reversing ocean currents along the equator and along the west coast of South and Central America.

Learn more about the east coast of South America

https://brainly.com/question/20672974

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