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Seasonality of the intraseasonal variability in the upper equatorial western Pacific Ocean currents

文献类型：期刊论文

作者Song, Lina1,2,6; Li, Yuanlong2,5,6; Lee, June-Yi3,4; Wang, Fan2,5,6; Wang, Jianing2,5,6
刊名ENVIRONMENTAL RESEARCH LETTERS
出版日期2024-08-01
卷号19期号:8页码:12
关键词atmospheric intraseasonal oscillation equatorial zonal current large-scale ocean circulation mooring observation
ISSN号1748-9326
DOI10.1088/1748-9326/ad657f
通讯作者Song, Lina(linasong@qdio.ac.cn) ; Wang, Fan(fwang@qdio.ac.cn)
英文摘要Quantifying spatiotemporal characteristics of intraseasonal variability (ISV) of upper ocean (100 m) zonal currents (U) in the equatorial western Pacific remains difficult due to a lack of direct observations. Here we investigate the characteristics by analyzing five subsurface mooring data at 140 degrees-142 degrees E, 1.7 degrees S-4.7 degrees N, from January 2014 to April 2021. Our analysis revealed that U ISV has an amplitude exceeding 40 cm s-1, comparable to their long-term mean, and pronounced seasonality, with a peaking period in boreal winter-spring (October-April) and a weakening period in summer-autumn (May-September). U ISV intensity in the south of the equator is 50% stronger than that in the north. Analysis of satellite/reanalysis data and model experiments suggests that atmospheric intraseasonal oscillation accounts for 80% of the U ISV seasonality through wind forcing, while the oceanic internal process contributes 20% through nonlinear baroclinic instability. The consistent variation in mixed layer depth indicates the potential roles of oceanic ISVs in seasonal phase locking of El Ni & ntilde;o-Southern oscillation. Our results highlight the significance of direct observations for better understanding and estimating ISVs of ocean circulation.
WOS关键词MADDEN-JULIAN OSCILLATION ; ZONAL CURRENTS ; KELVIN WAVES ; ENSO ; SEA ; TEMPERATURE ; MODULATION ; TRANSPORT
资助项目National Natural Science Foundation of China (NSFC)[42090040] ; National Natural Science Foundation of China (NSFC)[42222602] ; National Natural Science Foundation of China (NSFC)[42176034] ; NSFC Innovative Group Grant[42221005] ; National key RD program[2022YFF0801401] ; Taishan Scholars Program ; National Research Foundation of Korea[NRF-2022R1A2C1013296] ; Laoshan Laboratory[LSKJ202202601]
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:001282098200001
出版者IOP Publishing Ltd
源URL[http://ir.qdio.ac.cn/handle/337002/186204]  
专题海洋研究所_海洋环流与波动重点实验室
海洋研究所_海洋生态与环境科学重点实验室
通讯作者Song, Lina; Wang, Fan
作者单位1.Qingdao Marine Sci & Technol Ctr, Lab Ocean Dynam & Climate, Qingdao 266237, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Observat & Forecasting, Qingdao, Peoples R China
3.Inst Basic Sci, Ctr Climate Phys, Busan, South Korea
4.Pusan Natl Univ, Res Ctr Climate Sci, Busan, South Korea
5.Laoshan Lab, Qingdao, Peoples R China
6.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China
推荐引用方式
GB/T 7714		 Song, Lina,Li, Yuanlong,Lee, June-Yi,et al. Seasonality of the intraseasonal variability in the upper equatorial western Pacific Ocean currents[J]. ENVIRONMENTAL RESEARCH LETTERS,2024,19(8):12.
APA Song, Lina,Li, Yuanlong,Lee, June-Yi,Wang, Fan,&Wang, Jianing.(2024).Seasonality of the intraseasonal variability in the upper equatorial western Pacific Ocean currents.ENVIRONMENTAL RESEARCH LETTERS,19(8),12.
MLA Song, Lina,et al."Seasonality of the intraseasonal variability in the upper equatorial western Pacific Ocean currents".ENVIRONMENTAL RESEARCH LETTERS 19.8(2024):12.

入库方式： OAI收割

来源：海洋研究所

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