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

doi:10.1088/1748-9326/ad657f

IOCAS-IR > 海洋环流与波动重点实验室

	Seasonality of the intraseasonal variability in the upper equatorial western Pacific Ocean currents
	Song, Lina1,2,3 ; Li, Yuanlong 1,2,4; Lee, June-Yi 5,6; Wang, Fan1,2,4 ; Wang, Jianing1,2,4
	2024-08-01
发表期刊	ENVIRONMENTAL RESEARCH LETTERS
ISSN	1748-9326
卷号	19 期号:8 页码:12
通讯作者	Song, Lina(linasong@qdio.ac.cn) ; Wang, Fan(fwang@qdio.ac.cn)
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.
关键词	atmospheric intraseasonal oscillation equatorial zonal current large-scale ocean circulation mooring observation
DOI	10.1088/1748-9326/ad657f
收录类别	SCI
语种	英语
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
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001282098200001
出版者	IOP Publishing Ltd
WOS关键词	MADDEN-JULIAN OSCILLATION ; ZONAL CURRENTS ; KELVIN WAVES ; ENSO ; SEA ; TEMPERATURE ; MODULATION ; TRANSPORT
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/186205
专题	海洋环流与波动重点实验室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.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.Qingdao Marine Sci & Technol Ctr, Lab Ocean Dynam & Climate, Qingdao 266237, Peoples R China 4.Laoshan Lab, Qingdao, Peoples R China 5.Pusan Natl Univ, Res Ctr Climate Sci, Busan, South Korea 6.Inst Basic Sci, Ctr Climate Phys, Busan, South Korea
第一作者单位	中国科学院海洋研究所; 海洋环流与波动重点实验室
通讯作者单位	中国科学院海洋研究所; 海洋环流与波动重点实验室
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.