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Long-Term Variability of the Kuroshio Shelf Intrusion and Its Relationship to Upper-Ocean Current and Temperature Variability in the East China Sea
Cited 5 time in
Web of Science
Cited 5 time in Scopus
- Authors
- Issue Date
- 2022-02-10
- Publisher
- Frontiers Media S.A.
- Citation
- Frontiers in Marine Science, Vol.9, p. 812911
- Abstract
- The strong variability of the Kuroshio northeast of Taiwan is associated with changes in the strength of the Kuroshio shelf intrusion (KSI) in the East China Sea (ECS), which is a westward shift in the Kuroshio toward the shelf region. The KSI contributes to the exchange of different water masses between the shelf and the western boundary current regions, and plays a key role in ecosystem and climate regulation in the ECS and the downstream East Asian Marginal Seas. This study investigates the long-term variability of the KSI northeast of Taiwan during 1993-2018 and examines its relationship to the current and temperature variability in the ECS using a high-resolution ocean reanalysis dataset. The KSI was notably strengthened in 2000-2001, 2005, and 2009. It showed stronger interannual variability during the 2000s, whereas it was relatively stable in the 1990s and the 2010s. The strengthening of the KSI is accompanied by a westward shift of the Kuroshio axis, extending along its downstream path in the ECS. The associated warming is significant at depths >similar to 50 m but not near the surface. The resultant weakening of the vertical stratification in the shelf region would have important implications for ecosystem variability in the ECS.
- ISSN
- 2296-7745
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