IOD-Driven Quasi-Biennial Variability Influence on Indian Ocean Equatorial
文献类型：期刊论文
| 作者 | Huang, Ke2,3,6; Wang, Dongxiao7,8; Zhu, Yingli1,5; Zhou, Wei6; Yao, Jinglong6; Peng, Bo4 |
| 刊名 | JOURNAL OF CLIMATE
 |
| 出版日期 | 2025-12-01 |
| 卷号 | 38期号:23页码:6907-6927 |
| 关键词 | Ocean Indian Ocean Ocean circulation Ocean dynamics Quasibiennial oscillation Oceanic variability |
| ISSN号 | 0894-8755 |
| DOI | 10.1175/JCLI-D-25-0015.1 |
| 通讯作者 | Huang, Ke(kehuang@scsio.ac.cn) ; Wang, Dongxiao(dxwang@mail.sysu.edu.cn) |
| 英文摘要 | Inherent quasi-biennial (QB) variability (with a period of 1.5-2 years) of the Indian Ocean dipole (IOD) significantly influences the interannual variability of the Indian Ocean Equatorial Undercurrent (IO-EUC), yet it has received limited attention until now. This study investigates the QB variability of the IO-EUC, focusing on its phase transitions and dynamical connections to the IOD, using long-term ocean reanalysis and linear ocean model outputs with various statistical methods. Two leading empirical orthogonal function (EOF) modes of anomalous subsurface zonal currents capture the dominant QB variability of the IO-EUC. A coherent temporal lead-lag relationship of 4-5 months between the principal components of these leading modes indicates a typical life cycle characterized by a basinwide, samesign displacement along the equator during equilibrium phases, and an east-west tilting subsurface mode during disequilibrium phases. Consistent with the inherent-oscillation framework of the IOD, the switch between positive and negative IOD stages, along with the propagations and reflections of wind-forced and boundary-reflected equatorial waves, contributes to the QB component and phase transition mechanisms of the IO-EUC. Importantly, higher-order baroclinic mode Rossby waves with relatively slower phase speeds are found to play a crucial role in shaping the life cycle and phase transitions of IO-EUC under the inherent IOD oscillation. These findings enhance our understanding on the new scenario of the Indian Ocean current system in maintaining and redistributing tracers throughout the climate system. |
| WOS关键词 | ZONAL CURRENTS ; INTERANNUAL VARIABILITY ; ROSSBY WAVES ; TIME-SCALE ; UNDERCURRENT ; DYNAMICS ; PROPAGATION ; SYSTEM ; IMPACT ; MODE |
| 资助项目 | National Natural Science Foundation of China (NSFC) Shiptime Sharing Project[42249910] ; National Natural Science Foundation of China (NSFC) Shiptime Sharing Project[42149910] ; NSFC[42230402] ; NSFC[92158204] ; NSFC[42176026] ; NSFC[42576010] ; NSFC[41906147] ; NSFC[42076201] ; NSFC[42276022] ; Open Fund Project of Key Laboratory of Marine Environmental Information Technology ; Ministry of Natural Resources of the People's Republic of China ; Science and Technology Program of Guangdong Province[2022B1212050003] ; Fund of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)[SML2024SP009] ; Fund of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)[SML2023SP240] ; Innovation team of Deep Sea and Open Ocean Multi-Scale Dynamic Processes in the Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)[311024005] ; Special fund of South China Sea Institute of Oceanology of the Chinese Academy of Sciences[SCSIO2023HC07] ; Fujian Provincial Key Laboratory of Marine Physical and Geological Processes[KLMPG-22-02] ; Science Fundation Program from Institue of Oceanology, Chinese Academy of Sciences[E530271] ; Japan Agency for Marine-Earth Science and Technology ; China-Sri Lanka Joint Center for Education and Research, Chinese Academy of Sciences ; Group of Air-Sea Interaction in the School of Marine Sciences at Sun Yat-Sen University ; High-Performance Computing Division and HPC managers of Wei Zhou and Dandan Sui in the South China Sea Institute of Oceanology |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001615077500001 |
| 出版者 | AMER METEOROLOGICAL SOC |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/203782]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Huang, Ke; Wang, Dongxiao |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Observat & Forecasting, Qingdao, Peoples R China 2.Fujian Prov Key Lab Marine Phys & Geol Proc, Xiamen, Peoples R China 3.Chinese Acad Sci, South China Sea Inst Oceanol, Guangdong Key Lab Ocean Remote Sensing & Big Data, Guangzhou, Peoples R China 4.Jinan Univ, Inst Environm & Climate Res, Guangzhou, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 6.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Peoples R China 7.Sun Yat Sen Univ, Sch Marine Sci, Zhuhai, Peoples R China 8.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Ke,Wang, Dongxiao,Zhu, Yingli,et al. IOD-Driven Quasi-Biennial Variability Influence on Indian Ocean Equatorial[J]. JOURNAL OF CLIMATE,2025,38(23):6907-6927. |
| APA | Huang, Ke,Wang, Dongxiao,Zhu, Yingli,Zhou, Wei,Yao, Jinglong,&Peng, Bo.(2025).IOD-Driven Quasi-Biennial Variability Influence on Indian Ocean Equatorial.JOURNAL OF CLIMATE,38(23),6907-6927. |
| MLA | Huang, Ke,et al."IOD-Driven Quasi-Biennial Variability Influence on Indian Ocean Equatorial".JOURNAL OF CLIMATE 38.23(2025):6907-6927. |
入库方式： OAI收割
来源：海洋研究所
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