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| DOI | 10.1088/1748-9326/ad2c24 |
| Connections between low- and high- frequency variabilities of stratospheric northern annular mode and Arctic ozone depletion | |
| 发表日期 | 2024 |
| ISSN | 1748-9326 |
| 起始页码 | 19 |
| 结束页码 | 4 |
| 卷号 | 19期号:4 |
| 英文摘要 | 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 (<2 months) (denoted as NAM(L) and NAM(H)) and investigates their relationship with the Arctic ozone concentration in March. A closer relationship is found between the Arctic ozone and the NAM(L), i.e. a persistently strong stratospheric polar vortex in winter (especially February-March) is more critical than a short-lasting extremely strong vortex in contributing to Arctic ozone depletion. We find that a negative NAM(H) or major stratospheric sudden warming event in early winter could be a precursor for the anomalous depletion of Arctic ozone in March. The NAM(L) changes are further related to the warm North Pacific sea surface temperature (SST) anomalies and 'central-type' El Ni & ntilde;o-like or La Ni & ntilde;a-like SST anomalies in early winter months, as well as cold North Atlantic SST anomalies and higher sea ice concentration in the Barents-Kara Sea from late-autumn to early-spring. |
| 英文关键词 | ozone depletion; northern annular mode; stratospheric polar vortex; low and high frequency variability |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:001189332000001 |
| 来源期刊 | ENVIRONMENTAL RESEARCH LETTERS
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/297324 |
| 作者单位 | Nanjing University of Information Science & Technology; Lanzhou University |
| 推荐引用方式 GB/T 7714 | . Connections between low- and high- frequency variabilities of stratospheric northern annular mode and Arctic ozone depletion[J],2024,19(4). |
| APA | (2024).Connections between low- and high- frequency variabilities of stratospheric northern annular mode and Arctic ozone depletion.ENVIRONMENTAL RESEARCH LETTERS,19(4). |
| MLA | "Connections between low- and high- frequency variabilities of stratospheric northern annular mode and Arctic ozone depletion".ENVIRONMENTAL RESEARCH LETTERS 19.4(2024). |
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