You asked: What climate condition occurs during El Niño quizlet?

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.

What climate condition occurs during El Niño?

An El Niño condition occurs when surface water in the equatorial Pacific becomes warmer than average and east winds blow weaker than normal. The opposite condition is called La Niña. During this phase of ENSO, the water is cooler than normal and the east winds are stronger. El Niños typically occur every 3 to 5 years.

When the El Niño occurs quizlet?

El Nino events occur on average about every 3 to 5 years but historically have occurred at wider intervals from 2-7 years. What is the periodicity of La Nina events, and how long do they typically last? La Nina Events typically last 1-3 years.

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How does El Niño 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.

What happens during an El Niño event 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.

What climate conditions occur during La Niña quizlet?

What are the weather conditions during La Niña? Sea surface temperatures are cooler, air temperatures are HOT, little or no precipitation, strong upwelling, high pressure trade winds in the east.

How El Niño and La Nina affect climate?

During El Niño, surface water in the central and eastern equatorial Pacific Ocean is unusually warm. … La Niña usually impacts U.S. weather by bringing cooler weather to the northwest and warmer weather to the southeast, though just like El Niño, not every La Niña event affects U.S. weather identically.

Why does El Nino occur quizlet?

This occurs when the sea is warmer than the land. … The wind blows from the high pressure over the land to the low pressure over the sea. El Nino. Refers to the irregular WARMING in the sea surface temperatures from the coasts of Peru and Ecuador to the equatorial central Pacific.

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What causes an El Nino to occur quizlet?

is an abnormal weather pattern that is caused by the warming of the Pacific Ocean near the equator, off the coast of South America.

What occurs during a major El Niño event?

During an El Niño event, the surface waters in the central and eastern Pacific Ocean become significantly warmer than usual. … 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.

What is El Nino geography quizlet?

Terms in this set (16)

El Nino. warm ocean temperatures in Pacific near South America. La Nina. Opposite to El Nino, cooler temperatures in the Pacific near South America and along the equator.

How does an El Nino affect weather patterns in Texas quizlet?

Usually, El Nino brings more rain and higher temperatures. … It also affects rainfall, drier than normal conditions will persist in west Texas, New Mexico and Arizona into October.

Which of these is commonly an effect of El Nino?

El Niño is a climate pattern that describes the unusual warming of surface waters in the eastern equatorial Pacific Ocean. … El Niño has an impact on ocean temperatures, the speed and strength of ocean currents, the health of coastal fisheries, and local weather from Australia to South America and beyond.

What ocean oscillations have an influence on weather and climate quizlet?

El Niño-Southern Oscillation (ENSO) refers to variations in SSTs, rainfall, surface air pressure, and atmospheric circulation across the tropical Pacific. ENSO consists of El Niño, which occurs in the equatorial ocean, and the Southern Oscillation, which occurs in the atmosphere.

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How can an El Niño La Niña Southern Oscillation ENSO affect weather quizlet?

-High pressure and sinking air dominates the coastal region of South America, which produces clear, fair, and dry weather. -On the other side of the pacific, a low-pressure region and rising air creates cloudy conditions and lots of rain in Indonesia, New Guinea and Northern Australia.

What oceanic and atmospheric conditions occur during a La Niña?

During La Niña conditions, the easterly trade winds near the equator get even stronger than they usually are. Stronger winds push surface water into the western Pacific. Meanwhile, cool water from deeper in the ocean rises up in the eastern Pacific.