Characteristics and mechanisms of the upwelling in the southern Taiwan Strait: a three-dimensional numerical model study

Jiang, Yuwu; Chai, F.; Wan, Zhenwen; Zhang, Xin; Hong, Huasheng

doi:10.1007/s10872-011-0080-x

Cited by 40 publications

(39 citation statements)

References 28 publications

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“…Tide, through a tidal mixing effect or internal tide, plays a key role in modulating or intensifying the upwelling, such as around the Taiwan Bank or southwest of Hainan Island (Table ). For the upwelling around the Taiwan Bank, upward transport of the SCS water carries cold water from the subsurface layer to a depth of approximately 25 m near the Taiwan Bank, then strong tidal mixing forces this upwelled water further upward to the surface or near the surface layer [ Hong et al ., ; Jiang et al ., ]. For the summertime upwelling off the southwestern coast of Hainan Island, the existing tidal mixing front [ Hu et al ., ] has been identified as a vital factor triggering the upwelling [ Lü et al ., ].…”

Section: Upwelling Dynamics With Applications To the China Seasmentioning

confidence: 99%

Progress on upwelling studies in the China seas

Wang

2016

Reviews of Geophysics

225

130

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East Asian marginal seas surrounding China exhibit rich ocean upwelling, mostly in response to the southwesterly summer monsoon. Upwelling in the China seas, namely, the South China Sea, the Taiwan Strait, the East China Sea, the Yellow Sea, and the Bohai Sea, has become increasingly important because the potential changes in the upwelling may have dramatic ecosystem, socioeconomic, and climate impacts. This paper reviews the progress of upwelling studies in the China seas since the year 2000, by presenting the principal characteristics and new understanding of 12 major upwelling regions in the China seas. Upwelling exhibits long-term variability at intraseasonal to multidecadal scales as well as short-term variability frequently caused by tropical cyclones. It is also associated with the El Niño-Southern Oscillation, local environmental variation, and biogeochemical factors. The coastal upwelling around Hainan Island and the upwelling or cold dome northeast of Taiwan Island are specifically highlighted because they have attracted great interest for decades. This paper summarizes upwelling mechanisms in terms of wind, topography, tide, stratification, and background flow, with applications mostly to the China seas. Finally, we propose some topics for future upwelling research, i.e., potential intensification of coastal upwelling under global climate change, downwelling, intrusion of upwelling into coastal embayments, and the influence of upwelling on fishery and biogeochemical processes.

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Section: Upwelling Dynamics With Applications To the China Seasmentioning

confidence: 99%

Progress on upwelling studies in the China seas

Wang

2016

Reviews of Geophysics

225

130

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“…Therefore, the statistical results shown in Figure 4 do not necessarily mean that there were no ISWs located in the southern TS during these seasons. To examine their possible existence for each season, we calculated the depth-integrated internal tidegenerating body force for four seasons using high-resolution bathymetry data (a spatially filtered version for local bathymetry combining the survey data and ETOPO2v2 as employed in Jiang et al 2011) and seasonal stratification profiles. As it is known that ISWs are generated in the Luzon Strait in all seasons (Zheng et al 2007), in Figure 6 we only show results in the local generation region of the southern TS.…”

Section: The Applicability Of Modis In Detecting Iswsmentioning

confidence: 99%

Generation sites of internal solitary waves in the southern Taiwan Strait revealed by MODIS true-colour image observations

Bai

Liu

et al. 2014

International Journal of Remote Sensing

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“…At the eastern edge of the TWB, the northward current is strong in the upper layers. Both wind‐driven upwelling and strong tidal mixing are proposed as mechanisms for bringing deep water onto the shelf in the northeastern TWB [ Jiang et al ., ]. Subsurface water in the northern SCS intrudes into the TWS via the PHC, which can lead to a strong onshore current [ Allen and Durrieu de Madron , ].…”

Section: Model Resultsmentioning

confidence: 98%

Summer nitrogenous nutrient transport and its fate in the Taiwan Strait: A coupled physical‐biological modeling approach

et al. 2013

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[1] In order to understand the fate of nutrients in the Taiwan Strait during summer, we built a coupled physical-biological numerical ocean model, which can capture the basic hydrographic and biological features within the strait. The nutrient that we chose to model is dissolved inorganic nitrogen (DIN). The model includes individual reservoirs for nitrate (NO 3 ) and ammonium (NH 4 ). Both the observational evidence and model results show that NO 3 in the strait originates primarily from the upwelling subsurface water in the northern South China Sea (SCS) that enters the strait via the eastern and western routes separated by the Taiwan Bank. The coupled physical and biological effects on the NO 3 transport at these two routes are highlighted in the study. For the western route, the shallow topography and the coastal upwelling intensify the biological uptake of NO 3 in the whole water column. Consequently, the nitrogenous contribution by this route is mainly in form of the particulate organic nitrogen (PON). In contrast, NO 3 is transported conservatively below the nitricline at the deep eastern route, contributing the whole NO 3 supply in the TWS. The model estimates the fluxes of DIN and PON into the TWS, from the northern SCS, are 1.8 and 4 kmol s À1, respectively. Over half ($1 kmol s À1) of the DIN is synthesized into PON by the phytoplankton in the strait. Overall, this study estimates the physical and biological effects on the nutrient transport in the TWS during summer.

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Characteristics and mechanisms of the upwelling in the southern Taiwan Strait: a three-dimensional numerical model study

Cited by 40 publications

References 28 publications

Progress on upwelling studies in the China seas

Progress on upwelling studies in the China seas

Generation sites of internal solitary waves in the southern Taiwan Strait revealed by MODIS true-colour image observations

Summer nitrogenous nutrient transport and its fate in the Taiwan Strait: A coupled physical‐biological modeling approach

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