Temporal-spatial oceanic variation in relation with the three typical Kuroshio paths south of Japan

Xiaobo Wu; Yanling Zhao; Guijun Han; Wei Li; Qi Shao; Lige Cao; Chaoliang Li

doi:10.1007/s13131-021-1941-9

Volume 41 Issue 2

Feb. 2022

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Xiaobo Wu, Yanling Zhao, Guijun Han, Wei Li, Qi Shao, Lige Cao, Chaoliang Li. Temporal-spatial oceanic variation in relation with the three typical Kuroshio paths south of Japan[J]. Acta Oceanologica Sinica, 2022, 41(2): 15-25. doi: 10.1007/s13131-021-1941-9

Citation:

Xiaobo Wu, Yanling Zhao, Guijun Han, Wei Li, Qi Shao, Lige Cao, Chaoliang Li. Temporal-spatial oceanic variation in relation with the three typical Kuroshio paths south of Japan[J]. Acta Oceanologica Sinica, 2022, 41(2): 15-25. doi: 10.1007/s13131-021-1941-9

Citation:

Xiaobo Wu, Yanling Zhao, Guijun Han, Wei Li, Qi Shao, Lige Cao, Chaoliang Li. Temporal-spatial oceanic variation in relation with the three typical Kuroshio paths south of Japan[J]. Acta Oceanologica Sinica, 2022, 41(2): 15-25. doi: 10.1007/s13131-021-1941-9

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Temporal-spatial oceanic variation in relation with the three typical Kuroshio paths south of Japan

doi: 10.1007/s13131-021-1941-9

Xiaobo Wu¹,
Yanling Zhao²,
Guijun Han^{1
,
,},
Wei Li^{1, 3
,
,},
Qi Shao^{1, 3},
Lige Cao¹,
Chaoliang Li¹

1.
School of Marine Science and Technology, Tianjin University, Tianjin 300072, China
2.
The PLA 31010 Units, Beijing 100081, China
3.
Tianjin Key Laboratory for Oceanic Meteorology, Tianjin 300074, China

Funds: The National Natural Science Foundation of China under contract No. 41876014.

More Information

Corresponding author: E-mail: guijun_han@tju.edu.cn; liwei1978@tju.edu.cn
Received Date: 2021-05-24
Accepted Date: 2021-09-03

Available Online: 2021-12-09

Publish Date: 2022-02-01

Abstract

Abstract

Empirical orthogonal function (EOF) analysis was applied to a 50-year long time series of monthly mean positions of the Kuroshio path south of Japan from a regional reanalysis. Three leading EOF modes characterize the contributions from three typical paths of the Kuroshio meander: the typical large meander path, the offshore non-large meander path, and the nearshore non-large meander path, respectively. Accordingly, the spatial variation characteristics of oceanic anomaly fields can be depicted by their regression fields upon the associated three leading principal components (PCs), which are well-matched with the results of composite analysis corresponding to each period of the three typical Kuroshio paths. A new index for the typical large meander is defined by using the second leading PC, which is highly correlated with the Kushimoto-Uragami index. Spectral analysis of this new index series shows variability of the Kuroshio path south of Japan at time scales of about 7–8 years and 20 years.
- Kuroshio path,
- south of Japan,
- empirical orthogonal function analysis,
- temporal-spatial oceanic variation,
- large meander index

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References(56)

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