Process study of circulation in the Pearl River Estuary and adjacent coastal waters in the wet season using a triply-nested circulation model

Ji, Xiaomei; Jiang, Sheng; Tang, Liqun; Liu, Dabin; Yang, Xiu‐Qun

doi:10.1016/j.ocemod.2011.02.010

Cited by 60 publications

(23 citation statements)

References 22 publications

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“…The sea surface salinity frontal zone in the wet season is much wider and spreads farther offshore to the mouth of the PRE Ji et al, 2011) than in the dry season. Large seasonal differences in circulation and salinity distributions in the PRE are also strongly affected by the seasonal variability of the wind forcing and the associated wind-induced coastal current known as the Guangdong Coastal Current over the inner shelf of the northern SCS.…”

Section: Results a Seasonal Mean Circulationmentioning

confidence: 99%

“…DalCoast-PRE was previously validated by Tang et al (2009) and Ji et al (2011). For the purpose of model validation, some figures and discussions presented in this section are similar to these presented in these two papers.…”

Section: Assessment Of Model Performancementioning

confidence: 94%

“…The climatological monthly means of freshwater discharge from eight major river inlets (Fig. 5) are used to drive the middle and inner models using a numerical scheme discussed in Yang and Sheng (2008) and Ji et al (2011). The monthly Canadian Meteorological and Oceanographic Society means of the freshwater discharge from four inlets of the Humen, Jiaomen, Hongqimen and Hengmen rivers were taken from Chen and Wong (2004).…”

Section: Model Setup and Forcingmentioning

confidence: 99%

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Process Study of Dry-Season Circulation in the Pearl River Estuary and Adjacent Coastal Waters using a Triple-Nested Coastal Circulation Model

Jiang

Tang

et al. 2011

Atmosphere-Ocean

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The Pearl River Estuary (PRE) on the east coast of Guangdong Province in South China is a complicated hydrodynamic system affected by various forcing functions including tides, wind forcing, and sea surface heat and freshwater fluxes. The PRE also receives a large amount of freshwater runoff from the Pearl River through eight major river inlets. In this study, the three-dimensional circulation, hydrography, and associated temporal variability in the PRE and adjacent coastal waters during the dry season from December to March are examined using a triple-nested coastal ocean circulation modelling system based on the Princeton Ocean Model. Four numerical experiments are conducted by driving the triple-nested modelling system with different combinations of external forcing functions. Analysis of multi-year model results from the four experiments demonstrates that the estuarine plume in the dry season is close to the western shore of the PRE, mainly due to the combination of the low Pearl River discharge and the influence of the southwestward coastal current over the inner shelf of the northern South China Sea. Temperature and salinity inside the estuarine plume in the dry season are weakly stratified in the vertical, with large horizontal salinity gradients near the frontal zone of the plume. Baroclinic dynamics play a very important role in the plume, with the frontal circulation forced by the combination of wind, tides and the Pearl River discharge. In the offshore deep waters of the PRE during the dry season, vertical stratification in the top 15 m is weak and circulation can be approximated by barotropic dynamics forced by wind and tides.RÉSUMÉ [Traduit par la rédaction] L'estuaire du fleuve Perle (EFP) sur la côte est de la province de Guangdong, dans le sud de la Chine, est un réseau hydrodynamique complexe soumis à diverses fonctions de forçage, y compris les marées, le forçage par le vent et les flux de chaleur de la surface de la mer et d'eau douce. L'EFP reçoit aussi une grande quantité d'eau douce de ruissellement du fleuve Perle par le biais de huit affluents importants. Dans cette étude, nous examinons la circulation tridimensionnelle, l'hydrographie et la variabilité temporelle connexe dans l'EFP et les eaux côtières adjacentes durant la saison sèche de décembre à mars au moyen d'un système de modélisation de la circulation océanique côtière triplement imbriqué basé sur le modèle océanique de Princeton. Nous menons quatre expériences numériques en fournissant au système de modélisation triplement imbriqué différ-entes combinaisons de fonctions de forçage externe. L'analyse des résultats du modèle sur plusieurs années dans les quatre expériences démontre que le panache estuarien pendant la saison sèche est près du rivage ouest de l'EFP, surtout à cause de la combinaison du faible débit du fleuve Perle et de l'influence du courant côtier vers le sud-ouest sur la plate-forme interne du nord de la mer de Chine méridionale. La température et la salinité à l'intérieur du panache estuarien durant la saison sèc...

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Section: Results a Seasonal Mean Circulationmentioning

confidence: 99%

Section: Assessment Of Model Performancementioning

confidence: 94%

Section: Model Setup and Forcingmentioning

confidence: 99%

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Process Study of Dry-Season Circulation in the Pearl River Estuary and Adjacent Coastal Waters using a Triple-Nested Coastal Circulation Model

Jiang

Tang

et al. 2011

Atmosphere-Ocean

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“…The approach was first applied in oceanographic modelling by Spall and Robinson (1989) but its use is now well-established (e.g. Zhang, et al, 2007;Staneva et al, 2009;Ji, et al, 2011;Hasegawa et al, 2011;Shan et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…This approach is most commonly adopted for down-scaling (globalregional-local) applications where only the CG solution is of interest (e.g. Korres and Lascaratos, 2003;Leitão et al, 2005;Staneva et al, 2009;Holt et al, 2009;Ji et al, 2011;Janekovic, 2012;Wang, 2012). By comparison, two-way nesting (e.g.…”

Section: Introductionmentioning

confidence: 99%