What is the El Niño–Southern Oscillation (ENSO) cycle?
Articles/Websites
Grades6, 7, 8, 9, 10, 11, 12Earth and Space Sciences
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Provided by Probable Futures
What it is
- This explainer describes the El Niño–Southern Oscillation, a naturally occurring cycle in the tropical Pacific Ocean that moves between El Niño, La Niña, and normal conditions as heat shifts between the ocean and atmosphere.
- The article explains that climate change does not appear to alter how the cycle works or its timing, but instead amplifies its impacts by building on warmer oceans and a moister atmosphere.
Teaching tips
Differentiation:
- Consider breaking this dense article up into smaller sections for students with low reading stamina.
- Consider providing students with a graphic organizer to track definitions.
Misconceptions:
- This article the common myth that El Niño/La Niña is caused by climate change
Extensions:
- Consider having students diagram the normal, El Niño, and La Niña phases with arrows for winds, ocean currents, and areas of rising or sinking air to reinforce the ocean–atmosphere interactions described in the text.
- For older students, the closing section on a possible “super” El Niño can anchor a discussion of how scientists use models and past events to forecast future conditions.
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