Kuroshio intrusion into the South China Sea: A review

Nan, Feng; Xue, Huijie; Yu, Fei

doi:10.1016/j.pocean.2014.05.012

Cited by 273 publications

(216 citation statements)

References 102 publications

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“…The intrusion of the Kuroshio loop current into the Luzon Strait is generally observed from November to March as a result of the northeast monsoon during the winter (e.g., Hsin et al 2012;Nan et al 2015). Observational data show that the anticyclonic intrusion of the Kuroshio can occur during any season, although winter is the most favorable time of the year (Yuan et al 2006).…”

Section: Seasonal Comparisonmentioning

confidence: 99%

Radiocarbon variability recorded in coral skeletons from the northwest of Luzon Island, Philippines

et al. 2017

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The North Equatorial Current (NEC) bifurcates at the eastern coast of the Philippines and moves northward as the Kuroshio, a North Pacific western boundary current. The NEC bifurcation point and Kuroshio variability are known to be affected by changes in climate such as the El Niño-Southern Oscillation and the pacific decadal oscillation. However, observational data are not sufficient to examine the mechanisms of decadal fluctuation. Here, we report seasonal radiocarbon data recorded from 1968 to 1995 in coral skeletons northwest of Luzon Island. The data suggest that the East Asian winter monsoon is a dominant factor in the seasonal fluctuations in water mass northwest of Luzon Island. Compared with other coral records reported for Guam, Ishigaki, Con Dao, and Hon Tre Island, the data suggest that the area of the Kuroshio loop current through the Luzon Strait decreased from the 1970s to 1980s as a result of the change in Kuroshio transport and the migration of the NEC bifurcation latitude after a regime shift in 1976.

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Section: Seasonal Comparisonmentioning

confidence: 99%

Radiocarbon variability recorded in coral skeletons from the northwest of Luzon Island, Philippines

et al. 2017

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“…As pointed out in Hu et al (2000), there were four main features of the Kuroshio intrusion as follows: a direct branch from the Kuroshio (Williamson, 1970;Fang et al, 1996;Chern and Wang, 1998;Qu et al, 2000), a form of loop (Zhang et al, 1995;Liu et al, 1996;Farris and Wimbush, 1996), a form of extension (Hu et al, 1999), and a form of ring (Li et al, 1998a, b) at present. Nan et al (2015) reviewed and summarized the Kuroshio intruding processes from observed data, numerical experiments, and theoretical analyses, and concluded that there were three typical paths of the Kuroshio intruding the SCS, the looping path, the leaking path, and the leaping path, which could be distinguished quantitatively by a Kuroshio SCS Index (Nan et al, 2011a) derived from the integral of geostrophic vorticity southwest of Taiwan. The three paths can change from one to another over several weeks.…”

Section: Introductionmentioning

confidence: 99%

Comparison and validation of global and regional ocean forecasting systems for the South China Sea

Zhu

Wang

Liu

et al. 2016

Nat. Hazards Earth Syst. Sci.

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Abstract. In this paper, the performance of two operational ocean forecasting systems, the global Mercator Océan (MO) Operational System, developed and maintained by Mercator Océan in France, and the regional South China Sea Operational Forecasting System (SCSOFS), by the National Marine Environmental Forecasting Center (NMEFC) in China, have been examined. Both systems can provide sciencebased nowcast/forecast products of temperature, salinity, water level, and ocean circulations. Comparison and validation of the ocean circulations, the structures of temperature and salinity, and some mesoscale activities, such as ocean fronts, typhoons, and mesoscale eddies, are conducted based on observed satellite and in situ data obtained in 2012 in the South China Sea. The results showed that MO performs better in simulating the ocean circulations and sea surface temperature (SST), and SCSOFS performs better in simulating the structures of temperature and salinity. For the mesoscale activities, the performance of SCSOFS is better than MO in simulating SST fronts and SST decrease during Typhoon Tembin compared with the previous studies and satellite data; but model results from both of SCSOFS and MO show some differences from satellite observations. In conclusion, some recommendations have been proposed for both forecast systems to improve their forecasting performance in the near future based on our comparison and validation.

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“…Therefore, strong NIGWs near the Luzon Strait can be detected in the deep SCSMOC south of the Luzon Strait as far as 10 • N. Although the Kuroshio intrusion is a low-frequency process, it can provide the background vorticity field for the vertical propagation through the chimney effect (Lee and Niiler, 1998;Zhai et al, 2005) because negative vorticity west of the Kuroshio near the Luzon Strait always exists. When the Kuroshio intrusion changes states among the looping path, the leaking path, and the leaping path (Nan et al, 2014), the geostrophic adjustment also triggers near-inertial waves. This process is well depicted by Nagai et al (2015) in relation to the Kuroshio meander.…”

Section: Discussionmentioning

confidence: 99%

On the near-inertial variations of meridional overturning circulation in the South China Sea

Xiao¹,

Xie²,

Wang³

et al. 2016

Ocean Sci.

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Abstract. We examine near-inertial variability of the meridional overturning circulation in the South China Sea (SC-SMOC) using a global 1/12 • ocean reanalysis. Based on wavelet analysis and power spectrum, we suggest that deep SCSMOC has a significant near-inertial band. The maximum amplitude of the near-inertial signal in the SCSMOC is nearly 4 Sv. The spatial structure of the signal features regularly alternating counterclockwise and clockwise overturning cells. It is also found that the near-inertial signal of SCSMOC mainly originates from the region near the Luzon Strait and propagates equatorward at a speed of 1-3 m s −1 . Further analyses suggest that the near-inertial signal in the SCSMOC is triggered by high-frequency wind variability near the Luzon Strait, where geostrophic shear always exists due to Kuroshio intrusion.

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Kuroshio intrusion into the South China Sea: A review

Cited by 273 publications

References 102 publications

Radiocarbon variability recorded in coral skeletons from the northwest of Luzon Island, Philippines

Radiocarbon variability recorded in coral skeletons from the northwest of Luzon Island, Philippines

Comparison and validation of global and regional ocean forecasting systems for the South China Sea

On the near-inertial variations of meridional overturning circulation in the South China Sea

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