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| DOI | 10.1038/s41612-024-00662-w |
| Competing impacts of tropical Pacific and Atlantic on Southern Ocean inter-decadal variability | |
| 发表日期 | 2024 |
| ISSN | 2397-3722 |
| 起始页码 | 7 |
| 结束页码 | 1 |
| 卷号 | 7期号:1 |
| 英文摘要 | The observed Southern Ocean sea surface temperature (SST) has experienced prominent inter-decadal variability nearly in phase with the Inter-decadal Pacific Oscillation (IPO), but less associated with the Atlantic Multidecadal Variability (AMV), challenging the prevailing view of Pacific-Atlantic synergistic effects. Yet, the mechanisms of distinct trans-hemispheric connections to the Southern Ocean remain indecisive. Here, by individually constraining the observed cold-polarity and warm-polarity IPO and AMV SSTs in a climate model, we show that the IPO is influential in initiating a basin-wide Southern Ocean response, with the AMV secondary. A tropical Pacific-wide cooling triggers a basin-scale Southern Ocean cold episode through a strong Rossby wave response to the north-to-south cross-equatorial weakened Hadley circulation. By contrast, due to the competing role of tropical Pacific cooling, an Atlantic warming partly cools the Southern Ocean via a weak Rossby wave response to the south-to-north cross-equatorial enhanced Hadley circulation. Conversely, tropical Pacific warming leads to a warm Southern Ocean episode. Our findings highlight that properly accounting for the tropical Pacific SST variability may provide a potential for skillful prediction of Southern Ocean climate change and more reliable estimates of climate sensitivity, currently overestimated by the misrepresented Southern Ocean warming. |
| 语种 | 英语 |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:001227043000001 |
| 来源期刊 | NPJ CLIMATE AND ATMOSPHERIC SCIENCE
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/295923 |
| 作者单位 | Chinese Academy of Sciences; Institute of Atmospheric Physics, CAS; Zhejiang University; Nanjing University of Information Science & Technology; Fudan University; Fudan University; Fudan University |
| 推荐引用方式 GB/T 7714 | . Competing impacts of tropical Pacific and Atlantic on Southern Ocean inter-decadal variability[J],2024,7(1). |
| APA | (2024).Competing impacts of tropical Pacific and Atlantic on Southern Ocean inter-decadal variability.NPJ CLIMATE AND ATMOSPHERIC SCIENCE,7(1). |
| MLA | "Competing impacts of tropical Pacific and Atlantic on Southern Ocean inter-decadal variability".NPJ CLIMATE AND ATMOSPHERIC SCIENCE 7.1(2024). |
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