Next El Niño could be tipping point for a hotter climate
Summary
Scientists are warning that a strong El Niño, a natural warming of the Pacific Ocean, could happen in the next year or so. This event may push global temperatures permanently above 1.5 degrees Celsius warmer than before the industrial age, causing lasting changes to weather, rainfall, and ecosystems around the world.Key Facts
- El Niño is a natural cycle where warm ocean water shifts across the tropical Pacific, affecting global weather patterns.
- A strong El Niño in the next 12 to 18 months could raise the Earth's average temperature above 1.5 degrees Celsius higher than pre-industrial times.
- Crossing this 1.5-degree threshold is linked to permanent changes in climate, such as more heatwaves, droughts, floods, and damaged ecosystems.
- The tropical Pacific Ocean is the warmest ocean region, covering an area about four times larger than the continental United States.
- Past El Niños contributed to record-breaking global temperatures, including the hottest year ever in 2024.
- Climate scientists say these warming events can cause “climate regime shifts,” meaning sudden and lasting changes in heat and rainfall patterns.
- Effects of El Niño include bleaching coral reefs, disrupting fisheries, increasing wildfires, and affecting crops and water supplies.
- Scientists worry that global temperatures may not fall back below the 1.5-degree mark even after the El Niño ends.
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