The South Pacific Subtropical Dipole and its relationship to ENSO in CMIP6 models
文献类型：期刊论文
| 作者 | Zheng, Jian1,2,3; Li, Yuanlong1,2,3,4; Wang, Faming1,2,3,4 |
| 刊名 | CLIMATE DYNAMICS
 |
| 出版日期 | 2026-03-27 |
| 卷号 | 64期号:4页码:15 |
| 关键词 | South Pacific Subtropical Dipole ENSO CMIP6 historical simulations NPO |
| ISSN号 | 0930-7575 |
| DOI | 10.1007/s00382-026-08143-x |
| 通讯作者 | Zheng, Jian(zhengjian@qdio.ac.cn) |
| 英文摘要 | The South Pacific Subtropical Dipole (SPSD) is a thermodynamically coupled climate mode characterized by dipolar sea surface temperature anomalies (SSTA). It links subtropical South Pacific oceanic and atmospheric anomalies to the equatorial Pacific, potentially initiating or affecting El Ni & ntilde;o-Southern Oscillation (ENSO) events. This study evaluates the simulation of SPSD in 49 Coupled Model Intercomparison Project Phase 6 (CMIP6) models. The historical simulations (1850-2014) successfully reproduce the observed spatiotemporal characteristics of SPSD, with maturing in austral summer and the pattern correlation ranging from 0.67 to 0.95. Most models also accurately capture the dominant contributions of latent heat flux and shortwave radiation to SPSD formation. Among the 49 models, 37 replicate the observed positive correlation between SPSD and subsequent winter ENSO events. However, the residual 12 models exhibit an inverse SPSD-ENSO relationship compared to observations. This intermodel discrepancy in the SPSD-ENSO connection relates to differences in how models simulate the concurrent interaction between SPSD and the North Pacific Oscillation (NPO). In models where positive SPSD phases coincide with positive (negative) NPO phases, the subtropical North Pacific is dominated by anomalous anticyclonic (cyclonic) circulation. These contrasting atmospheric patterns lead to opposing impacts on the SPSD-triggered ENSO development. These results deepen our understanding of how interactions across the extratropical North and South Pacific collectively influence ENSO dynamics. |
| WOS关键词 | SEA-SURFACE TEMPERATURE ; SEASONAL FOOTPRINTING MECHANISM ; MERIDIONAL MODES ; ATMOSPHERIC CIRCULATION ; EL-NINO ; VARIABILITY ; IMPACT ; NORTH ; ATLANTIC ; ITCZ |
| 资助项目 | Natural Science Foundation of Shandong Province[ZR2021MD024] ; Laoshan Laboratory[LSKJ202202401] ; Laoshan Laboratory[LSKJ202202601] |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001727666100005 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/205072]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Zheng, Jian |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Ocean Observat & Forecasting, Qingdao, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Lab Ocean Circulat & Waves, Qingdao, Peoples R China 3.Qingdao Marine Sci & Technol Ctr, Lab Ocean Dynam & Climate, Qingdao, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Jian,Li, Yuanlong,Wang, Faming. The South Pacific Subtropical Dipole and its relationship to ENSO in CMIP6 models[J]. CLIMATE DYNAMICS,2026,64(4):15. |
| APA | Zheng, Jian,Li, Yuanlong,&Wang, Faming.(2026).The South Pacific Subtropical Dipole and its relationship to ENSO in CMIP6 models.CLIMATE DYNAMICS,64(4),15. |
| MLA | Zheng, Jian,et al."The South Pacific Subtropical Dipole and its relationship to ENSO in CMIP6 models".CLIMATE DYNAMICS 64.4(2026):15. |
入库方式： OAI收割
来源：海洋研究所
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