Decoding ENSO: Ocean Temperature Changes and Atmospheric Impacts

The video explains the ENSO phenomenon, focusing on its three phases: neutral, El Nino, and La Nina. ENSO affects ocean temperatures and weather patterns in the Pacific Ocean. The neutral phase involves trade winds and Walker circulation. El Nino weakens trade winds, causing warm water to move east, leading to droughts in Australia and floods in the Americas. La Nina strengthens trade winds, pushing warm water west and bringing rain to the western Pacific.

What does the term 'ENSO' stand for?

• El Nino and Seasonal Oscillation

• Eastern Northern Southern Oscillation

• El Nino and Southern Oscillation

• Equatorial Northern Southern Oscillation

Which ocean is primarily involved in the ENSO phenomenon?

• Arctic Ocean

• Atlantic Ocean

• Indian Ocean

• Pacific Ocean

What role do trade winds play in the neutral phase of ENSO?

• They push warm ocean currents towards the eastern Pacific.

• They push warm ocean currents towards the western Pacific.

• They cause the ocean currents to remain stationary.

• They reverse the direction of ocean currents.

What is the Walker circulation?

• A pattern of rising air in the East and falling in the West

• A pattern of air moving north to south

• A pattern of air moving south to north

• A pattern of rising air in the West and falling in the East

During the El Nino phase, what happens to the trade winds?

• They reverse direction.

• They weaken.

• They remain the same.

• They become stronger.

What is the effect of El Nino on the Peruvian coast?

• It has no significant effect.

• It causes a drop in temperature.

• It brings heavy rain and floods.

• It causes drought conditions.

How does La Nina affect the trade winds?

• They become weaker.

• They remain unchanged.

• They reverse direction.

• They become stronger.

What is the thermocline in the context of La Nina?

• The point where cold water meets warm air

• The sinking path of water temperature

• The rising path of water temperature

• The point where warm water meets cold water

Which phase of ENSO is associated with strong trade winds?

• La Nina

• El Nino

• Neutral Phase

• None of the above

What is the main difference between El Nino and La Nina?

• El Nino is associated with cold ocean currents, while La Nina is associated with warm ocean currents.

• Both are associated with cold ocean currents.

• El Nino is associated with warm ocean currents, while La Nina is associated with cold ocean currents.

• Both are associated with warm ocean currents.