Adaptation & Resilience
Biodiversity & Livelihoods
Early Warning & Risk Analysis
Land & Food
Global Issues
Francis Ghesquiere, Nicholas Jones

Named by Peruvian fishermen because of its tendency to appear around Christmastime, El Niño is the planet’s most large-scale and recurring mode of climate variability. Every 2-7 years, a slackening of trade winds that push sun-warmed water across the Pacific contributes to a rise in water temperature across large parts of the ocean.