Ocean Currents/La Nina/El nino

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What is La Niña?

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La Niña is a climate pattern characterized by cooler-than-average sea surface temperatures in the central and eastern Pacific Ocean, often leading to stronger trade winds.

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What is El Niño?

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El Niño is a climate pattern characterized by warmer-than-average sea surface temperatures in the central and eastern Pacific Ocean, which can disrupt normal weather patterns.

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How do El Niño and La Niña affect global weather?

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Both El Niño and La Niña influence global weather patterns, affecting rainfall and temperature across various regions, leading to droughts or floods.

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What happens to trade winds during an El Niño event?

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During an El Niño event, trade winds weaken or reverse, causing the warm water pool to shift eastward.

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What happens to trade winds during a La Niña event?

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During a La Niña event, trade winds are stronger than usual, pushing warm water further west.

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What is the impact of El Niño on marine life?

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El Niño can disrupt marine ecosystems by altering nutrient upwelling, affecting fish populations and other marine species.

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What is the impact of La Niña on precipitation patterns?

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La Niña typically leads to increased rainfall in some regions (like Southeast Asia) and drought in others (like the southern United States).

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Define 'normal' conditions in the context of ocean currents.

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Normal conditions refer to the typical state of ocean currents and trade winds, where there is a balance between warm and cold water in the Pacific.

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What is the Southern Oscillation?

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The Southern Oscillation is a periodic fluctuation in air pressure over the tropical Pacific Ocean, closely associated with El Niño and La Niña events.

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How do El Niño and La Niña affect hurricane activity?

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El Niño can suppress hurricane activity in the Atlantic, while La Niña can enhance it, leading to more frequent and intense hurricanes.