5 Questions
What causes El Niño by causing the ocean surface to reach above average temperatures?
Weakening or reversal of the Walker circulation
What is the cooling phase of the sea temperature known as in the El Niño–Southern Oscillation?
La Niña
What atmospheric component is coupled with the sea temperature change in the El Niño–Southern Oscillation?
Southern Oscillation
What is the warming phase of the sea temperature known as in the El Niño–Southern Oscillation?
El Niño
What causes La Niña, resulting in cooler ocean temperatures due to increased upwelling?
A strong Walker circulation
Test your knowledge about the irregular periodic variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean, known as El Niño–Southern Oscillation (ENSO). Learn about its impact on the climate of the tropics and subtropics, as well as the phases of El Niño and La Niña.
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