Interannual variability of the eastward current in the western <scp>S</scp>outh <scp>C</scp>hina <scp>S</scp>ea associated with the summer <scp>A</scp>sian monsoon

Chen, Changlin; Wang, Guihua

doi:10.1002/2014jc010309

Cited by 37 publications

(32 citation statements)

References 34 publications

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“…This can be detected in the climatological summer pattern (colorful streamlines in Figure a). Between these two gyres is a strong eastward current jet near 11°N, which is highly correlated with the summertime southwest monsoon [ Chen and Wang , ; Li et al ., ].…”

Section: Resultsmentioning

confidence: 99%

“…In summer, there is a strong anticyclonic gyre in the southern SCS and a weaker cyclonic gyre north of 11°N [ Wang et al ., ; Chen et al ., ]. Between these two gyres is a strong eastward oceanic jet, which originates from the coastal area off Vietnam [ Fang et al ., ; Liu et al ., ] and transports cold coastal water and nutrients offshore [ Xie et al ., ; Chen et al , ]; this current jet is identifiable by its accompanying upwelling characteristics [ Kuo et al ., ]. Xie et al .…”

Section: Introductionmentioning

confidence: 99%

“…In fact, the current jet may be regarded as a component of the western boundary current (WBC) in the SCS [ Liu et al ., ]. As a major forcing of the SCS circulation, the Asian monsoon contributes to the intraseasonal [ Xie et al ., ], seasonal [ Fang et al ., ], interannual [ Chen and Wang , ; Li et al ., ], and interdecadal [ Wang et al ., ] variability of the eastward jet.…”

Section: Introductionmentioning

confidence: 99%

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The influence of ENSO on an oceanic eddy pair in the South China Sea

Chu

2017

JGR Oceans

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An eddy pair off the Vietnam coast is one of the most important features of the summertime South China Sea circulation. Its variability is of interest due to its profound impact on regional climate, ecosystems, biological processes, and fisheries. This study examines the influence of the El Niño–Southern Oscillation (ENSO), a basin‐scale climatic mode, on the interannual variability of this regional eddy pair using satellite observational data and historical hydrographic measurements. Over the last three decades, the eddy pair strengthened in 1994 and 2002, and weakened in 2006, 2007, and 2008. It was absent in 1988, 1995, 1998, and 2010, coinciding with strong El Nino‐to‐La Nina transitions. Composite analyses showed that the strong transition events of ENSO led to radical changes in the summer monsoon, through the forcing of a unique sea surface temperature anomaly structure over the tropical Indo‐Pacific basin. With weaker zonal wind, a more northward wind direction, and the disappearance of a pair of positive and negative wind stress curls, the eastward current jet turns northward along the Vietnam coast and the eddy pair disappears.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The influence of ENSO on an oceanic eddy pair in the South China Sea

Chu

2017

JGR Oceans

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“…To investigate the causes of the meridional shifts of the cold filaments, we calculate the average locations of cold filaments and the associated eastward currents in each year from 2003 to 2013 (Figure ). It is noted that the zero vorticity contour of the dipole is used to present the core location of the eastward current [ Chen and Wang , ]. The correlation between the average locations of cold filaments and the associated eastward currents reaches 0.84, which is significant at the 95% confidence level.…”

Section: Resultsmentioning

confidence: 98%

Observed cold filaments associated with mesoscale eddies in the South China Sea

Wang

Zhai

2017

JGR Oceans

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Unusual cold filaments are uncovered during the spring intermonsoon season in the South China Sea (SCS) using a suite of satellite observations. They have a width of about 100 km on average and extend several hundreds of kilometers offshore on the sea surface, providing significant cross‐shelf transport of heat and nutrients. The eastward current associated with mesoscale eddies in spring in the western SCS found to play an important role in the filament formation by advecting coastal cold waters far offshore. The meridional location of the cold filament displays considerable interannual variability ranging between 9°N and 18°N, which can be attributed to the interannual south‐north shift of the eastward current associated with eddies. It is also found that in the spring, cold filaments have profound effects on the chlorophyll a concentration in the upper ocean as well as the overlying atmosphere. These findings provide new insights into the role of eddies in cross‐shelf exchange and mesoscale air‐sea interaction in the marginal seas.

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“…Based on modeling results, variation of the upper-layer circulation in the SCS associated with ENSO was detected (Wu et al 1998;Xie et al 2003;Liu et al 2004;Wu and Chang 2005;Y. G. Wang et al 2006;Chang et al 2008;Liu et al 2011;Li et al 2014;Chen and Wang 2014). By combining different observational and assimilative data, Fang et al (2006) and Yang and Wu (2012) estimated the trend of the surface circulation, wind, SST, and SSH.…”

Section: Introductionmentioning

confidence: 99%

Low-Frequency Variability of Monsoon-Driven Circulation with Application to the South China Sea

Yang

Sun

et al. 2015

Journal of Physical Oceanography

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The interannual variability of the upper-ocean circulation forced by seasonally varying monsoonal wind is investigated in a two-layer quasigeostrophic (QG) model, with the aim to understand the low-frequency variability of the South China Sea (SCS) circulation. It is demonstrated that the seasonally varying monsoonal wind can force the upper-ocean circulation with significant internal variability, which is mainly associated with the intrinsic nonlinear dynamics of the summer double-gyre system. This arises from the fact that the intrinsic variability, characterized by the Rossby wave adjustment in the winter single-gyre system, is much weaker than that in the summer double-gyre system driven by the intergyre eddy potential vorticity flux through barotropic instability.

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Interannual variability of the eastward current in the western South China Sea associated with the summer Asian monsoon

Cited by 37 publications

References 34 publications

The influence of ENSO on an oceanic eddy pair in the South China Sea

The influence of ENSO on an oceanic eddy pair in the South China Sea

Observed cold filaments associated with mesoscale eddies in the South China Sea

Low-Frequency Variability of Monsoon-Driven Circulation with Application to the South China Sea

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