IB Outcomes: Explain the atmosphere–oceanic interactions associated with ENSO.

Explain the El Niño and La Niña phenomena and their climatic, environmental and economic effects

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Begin the video below at 1:17

Case study:

Groups of 2, you have the whole period to complete all questions.

  • Although ENSO occurs in the Pacific, it’s impact is worldwide.

1. Answer the following questions using  graphs and short paragraphs:

1. What is El Nino? Draw a labeled diagram of the oceanic and atmospheric conditions of El Nino.

2. What is La Nina? Draw a labeled diagram of the oceanic and atmospheric conditions of La Nina. (differentiati it from normal conditions)

3. What causes El Nino?

4. What happens to the South Pacific Ocean during an El Nino event?

5. What happens to the Atmosphere during an El Nino event?

6. How does the Pacific Ocean thermocline change during an El Nino event?

2: Using a named,  recent major El Niño event, draw a table explaining the climatic, environmental and economic effects of El Nino

3. Using a named,  recent major La Nina event, draw a table explaining the climatic, environmental and economic effects of La Nina