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Lapsed El Niño impact on Atlantic and Northwest Pacific tropical cyclone activity in 2023

Earth Sciences

Lapsed El Niño impact on Atlantic and Northwest Pacific tropical cyclone activity in 2023

J. Zhao, R. Zhan, et al.

The 2023 tropical cyclone season has showcased unexpected patterns in the North Atlantic and western North Pacific, defying traditional El Niño influences. This compelling study by Jiuwei Zhao and colleagues reveals that record-warm ocean temperatures and global warming are key players in this year's cyclone activity anomalies.

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Playback language: English
Abstract
The 2023 tropical cyclone (TC) season showed unusual activity in the North Atlantic (NA) and western North Pacific (WNP), deviating from typical El Niño impacts. The NA experienced the third highest TC genesis frequency (TCGF) since 1980, while the WNP had a record low. This study attributes these deviations to record-warm NA temperatures, a record-breaking negative Pacific Meridional Mode (PMM), and global warming, overshadowing El Niño's typical suppressive effects on NA and WNP TC activity. High-resolution model experiments confirm these factors' significant contributions to the observed TCGF anomalies.
Publisher
Nature Communications
Published On
Aug 07, 2024
Authors
Jiuwei Zhao, Ruifen Zhan, Yuqing Wang, Shang-Ping Xie, Leying Zhang, Mingrui Xu
Tags
tropical cyclone
North Atlantic
western North Pacific
global warming
El Niño
climate anomaly
Pacific Meridional Mode

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