Connections between low- and high- frequency variabilities of stratospheric northern annular mode and Arctic ozone depletion

Previous studies have demonstrated a dynamical linkage between the ozone and stratospheric polar vortex strength, but only a few have mentioned the persistence of the anomalous vortex. This study uses the complete ensemble empirical mode decomposition with adaptive noise to decompose the winter stra...

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Bibliographic Details
Published in:Environmental research letters 2024-04, Vol.19 (4), p.44040
Main Authors: Yu, Yueyue, Wu, Yufeng, Zhang, Jiankai, Cui, Zhengfei, Shi, Chunhua, Rao, Jian, Guo, Dong, Xia, Xin
Format: Article
Language:English
Subjects:
Anomalies
El Nino
La Nina
low and high frequency variability
northern annular mode
Ozone
Ozone depletion
Polar vortex
Sea ice
Sea surface temperature
Stratosphere
stratospheric polar vortex
Stratospheric warming
Winter
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Summary:Previous studies have demonstrated a dynamical linkage between the ozone and stratospheric polar vortex strength, but only a few have mentioned the persistence of the anomalous vortex. This study uses the complete ensemble empirical mode decomposition with adaptive noise to decompose the winter stratospheric northern annular mode (NAM) variabilities into relatively low frequencies (>4 months) and high frequencies (
ISSN:1748-9326
1748-9326
DOI:10.1088/1748-9326/ad2c24