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Multi-year El Niño events tied to the North Pacific Oscillation

Earth Sciences

Multi-year El Niño events tied to the North Pacific Oscillation

R. Ding, Y. Tseng, et al.

Discover the fascinating link between tropical and extratropical atmospheric variability in multi-year El Niño events, a driver for persistent global impacts. Recent research by Ruiqiang Ding and colleagues uncovers how the North Pacific Oscillation influences these climatic phenomena, ultimately projecting an increased frequency of El Niño occurrences due to anthropogenic changes.

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Playback language: English
Abstract
Multi-year El Niño events, causing severe and persistent global impacts, are examined. A two-way feedback mechanism between tropical and extratropical atmospheric variability, specifically the North Pacific Oscillation (NPO), is proposed as a key driver. The NPO triggers Central Pacific El Niño events, which in turn reinforce the NPO, leading to persistent El Niño-like states. Model experiments confirm this link, and future projections suggest increased frequency of multi-year El Niño events due to enhanced NPO variability under anthropogenic forcing.
Publisher
Nature Communications
Published On
Jul 05, 2022
Authors
Ruiqiang Ding, Yu-Heng Tseng, Emanuele Di Lorenzo, Liang Shi, Jianping Li, Jin-Yi Yu, Chunzai Wang, Cheng Sun, Jing-Jia Luo, Kyung-Ja Ha, Zeng-Zhen Hu, Feifei Li
Tags
El Niño
North Pacific Oscillation
climate change
atmospheric variability
global impacts
tropical dynamics

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