Asymmetric ENSO Forcing on the South Pacific Meridional Mode
文献类型：期刊论文
| 作者 | Qi, Cheng1,2,3; Jia, Fan1,2,4 |
| 刊名 | GEOPHYSICAL RESEARCH LETTERS
 |
| 出版日期 | 2025-07-16 |
| 卷号 | 52期号:13页码:12 |
| 关键词 | ENSO South Pacific meridional mode multi-year La Ni & ntilde teleconnection a |
| ISSN号 | 0094-8276 |
| DOI | 10.1029/2025GL117165 |
| 通讯作者 | Jia, Fan(fjia@qnlm.ac) |
| 英文摘要 | The South Pacific Meridional Mode (SPMM) influences El Ni & ntilde;o-Southern Oscillation (ENSO) variability, but whether ENSO triggers SPMM remains unclear. We show that ENSO can induce an in-phase SPMM event via atmospheric teleconnections, beginning in early boreal summer of the ENSO-developing year, with a negative asymmetry. Strong La Ni & ntilde;a induces negative SPMM more effectively than El Ni & ntilde;o induces positive SPMM, due to differences in ENSO teleconnections and their intensity. During boreal summer and fall of strong La Ni & ntilde;a, intense transient eddy feedback reshapes the Pacific-South America pattern into a South Pacific Oscillation-like pressure dipole, strengthening trade winds and promoting negative SPMM growth, a process absent in El Ni & ntilde;o. In boreal winter, stronger La Ni & ntilde;a teleconnections sustain negative SPMM into spring. Half of the negative SPMM events co-occur with negative North Pacific Meridional Mode, contributing to multi-year La Ni & ntilde;a development. These findings advance the understanding of SPMM and its impact on ENSO. |
| WOS关键词 | ATMOSPHERIC VARIABILITY ; OCEAN ; NORTH ; IMPACT ; MODULATION ; MECHANISM |
| 资助项目 | National Natural Science Foundation of China ; National Key Research and Development Program of China[2020YFA0608801] ; Science and Technology Innovation Project of Laoshan Laboratory[LSKJ202203300] ; Taishan Scholars Program[tsqn202312265] ; [42376006] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001519748000001 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/202439]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Jia, Fan |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Observat & Forecasting, Qingdao, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Laoshan Lab, Qingdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qi, Cheng,Jia, Fan. Asymmetric ENSO Forcing on the South Pacific Meridional Mode[J]. GEOPHYSICAL RESEARCH LETTERS,2025,52(13):12. |
| APA | Qi, Cheng,&Jia, Fan.(2025).Asymmetric ENSO Forcing on the South Pacific Meridional Mode.GEOPHYSICAL RESEARCH LETTERS,52(13),12. |
| MLA | Qi, Cheng,et al."Asymmetric ENSO Forcing on the South Pacific Meridional Mode".GEOPHYSICAL RESEARCH LETTERS 52.13(2025):12. |
入库方式： OAI收割
来源：海洋研究所
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