Understanding the Super El Niño Phenomenon
A powerful El Niño event is currently unfolding and is expected to reach its peak by the end of 2026. This event is being called a 'super El Niño' due to its intensity and speed of development. Scientists are closely monitoring its progress, as it has the potential to significantly raise global temperatures in the coming years.
What is El Niño?
El Niño is a natural climate pattern that occurs in the tropical Pacific Ocean. It involves the release of heat from the ocean into the atmosphere, which temporarily increases global temperatures. This year’s El Niño has already broken several records and is reshaping weather patterns around the world, including fueling fires in Indonesia and creating powerful typhoons in the western Pacific.
How Strong is This El Niño?
The strength of an El Niño is measured using the 'Niño3.4 anomaly,' which compares sea surface temperatures in a specific region of the central Pacific to the average. Analysis of forecasts from multiple climate models shows that this year’s El Niño is expected to reach an anomaly of around 4°C. This would be more than a degree above the previous record set during the 2015-16 El Niño event.
Key Milestones of This El Niño
This year’s El Niño has already achieved several milestones. On 18 September, the daily anomaly in the Niño3.4 region broke the satellite-era record set in 2015, reaching 3.11°C. Additionally, September as a whole recorded the highest monthly Niño3.4 region temperature anomaly of 2.84°C since sea surface temperature records began in the mid-1800s.
When Will the El Niño Peak?
According to the latest analysis, the El Niño is expected to continue intensifying into December. Ten out of 14 climate models predict that temperatures in the Niño3.4 region will peak in the final month of this year. The remaining models anticipate a peak in November.
Impact on Global Temperatures
While human emissions of greenhouse gases are the main driver of long-term global warming, specific years can be strongly influenced by El Niño events. This year’s El Niño is expected to have its largest impact on global temperatures in 2027, as global temperatures typically lag behind warming in the tropical Pacific by about three months.
What to Expect in 2027
Carbon Brief projects that the average global temperature in 2027 will reach around 1.74°C above pre-industrial levels. There is a 96% chance that this year will be the warmest on record. This projection is based on historical data linking year-on-year temperature changes to El Niño conditions in the preceding autumn, as well as uncertainty about how global temperatures will develop in the remainder of 2026.
Conclusion
The current El Niño event is a powerful reminder of the complex and dynamic nature of our climate system. As it continues to develop, it will have significant implications for global temperatures and weather patterns. Staying informed and prepared is essential for understanding and adapting to these changes.
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Source : Carbon Brief