There has been an unprecedented increase in the number of El Niños forming in the Central Pacific over the past 30 years, compared to all 30 year periods in the past 400 years. At the same time, the stronger Eastern Pacific El Niños were the most intense El Niño events ever recorded, according to both the 100-year long instrumental record and the 400-year long coral record. This information will help improve climate change models to understand future impacts on weather and extreme events.
….Australian researchers have produced a world-first seasonal El Niño record extending 400 years and a new methodology that will likely be the basis for future climate research…..”The El Niño phenomenon is one of the most important features of global climate, and changes to its behaviour have very serious implications for weather patterns and extreme events around the world,” said Dr Henley.
Mandy B. Freund, Benjamin J. Henley, David J. Karoly, Helen V. McGregor, Nerilie J. Abram & Dietmar Dommenget. Higher frequency of Central Pacific El Niño events in recent decades relative to past centuries. Nature Geoscience, 2019 DOI: 10.1038/s41561-019-0353-3