Observation of the seasonal evolution of the Yellow Sea Cold Water Mass in 1996–1998

Zhang, S.W.; Wang, Q.Y.; Lu, Yuming; Cui, Hong; Yuan, Yue

doi:10.1016/j.csr.2007.10.002

Cited by 203 publications

(95 citation statements)

References 12 publications

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“…The distribution of the YSCWM is associated with the circulation of waters in the Yellow Sea (YS) and ECS generated by the monsoon and the tidal currents (Moon et al, 2009). The sea level increase in the northern areas of the YS due to the southeasterly summer monsoon winds and intrusion of TWCW into surface YS generates the compensation movement, a southward flow at the bottom water (Jacobs et al, 2000;Zhang et al, 2008). Therefore the southward spreading of YSCWM during summer can be affected by the strength of the southerly summer monsoon winds and velocity of TWCW.…”

Section: Hydrographic Characteristics and Nitrate Dynamics On The Conmentioning

confidence: 99%

“…In summer, Taiwan Strait Warm Water (TSWW) flows dominantly northeastward along with KSW, and these waters merge northeast of Taiwan due to impingement of the Kuroshio on the continental shelf and by onshore intrusion caused by frontal eddy motion around the shelf edge (Zhu et al, 2004;Guo et al, 2006;Lee and Matsuno, 2007). In northern areas of the ECS, the southern part of YSCWM develops in summer and decays in fall (Zhang et al, 2008). Then, in winter, the warm Kuroshio intrusion becomes gradually stronger relative to the YSCWM, and contacts nutrient-rich SMW, triggering diatom proliferation (Chiang et al, 2004).…”

Section: Y Umezawa Et Al: Seasonal Shift Of the Nitrate Sources In mentioning

confidence: 99%

“…The Kuroshio onshore flux, which merges with TSWW northeast of Taiwan and along the shelf-slope southwest of Kyusyu (Lee and Matsuno, 2007), shows strong seasonal variation with a minimum (0.5 Sv) in summer and a maximum (3 Sv) in autumn (Guo et al, 2006). Considering this seasonal change in the onshore flux and the fact that the southern YSCWM develops in summer and decays in fall (Zhang et al, 2008), the results of this study may provide evidence that the annual shift in the southern YSCWM development in summer controls the relative contribution of KSSW-derived nutrients to the SMW during summer. The distribution of the YSCWM is associated with the circulation of waters in the Yellow Sea (YS) and ECS generated by the monsoon and the tidal currents (Moon et al, 2009).…”

Section: Hydrographic Characteristics and Nitrate Dynamics On The Conmentioning

confidence: 99%

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Seasonal shifts in the contributions of the Changjiang River and the Kuroshio Current to nitrate dynamics in the continental shelf of the northern East China Sea based on a nitrate dual isotopic composition approach

et al. 2014

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Abstract. The northern East China Sea (ECS) serves as a spawning and nursery ground for many species of fish and squid. To clarify the basis of the food web in the northern ECS, we examined the nitrate (NO 3 ) dynamics along four latitudinal transects based on stable nitrogen and oxygen isotopes of NO 3 (δ 15 N NO 3 and δ 18 O NO 3 ) and temperaturesalinity dynamics in both winter (February 2009) and summer (July 2009 and July 2011). The δ 15 N NO 3 and δ 18 O NO 3 , which were distinctly different among the potential NO 3 sources, were useful for clarifying NO 3 sources and its actual usage by phytoplankton. In winter, Kuroshio Subsurface Water (KSSW) and the Yellow Sea Mixed Water (YSMW) predominantly contributed to NO 3 distributed in the shelf water. In the surface water of the Okinawa Trough, NO 3 from the KSSW, along with a temperature increase caused by an intrusion of Kuroshio Surface Water (KSW), seemed to stimulate phytoplankton growth. In summer, Changjiang Diluted Water (CDW), Yellow Sea Cold Water Mass (YSCWM), and KSSW affected the distribution and abundance of NO 3 in the northern ECS, depending on precipitation in the Changjiang drainage basin and the development of the YSCWM in the shelf bottom water. Although isotopic fractionation during NO 3 uptake by phytoplankton seemed to drastically increase δ 15 N NO 3 and δ 18 O NO 3 in summer, relatively light nitrate with δ 15 N NO 3 lower than expected from this fractionation effect might be explained by contribution of atmospheric nitrogen and/or nitrification to NO 3 dynamics in the surface and subsurface layers. If the latter were a dominant process, this would imply a tightly coupled nitrogen cycle in the shelf water of the northern ECS.

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Section: Hydrographic Characteristics and Nitrate Dynamics On The Conmentioning

confidence: 99%

Section: Y Umezawa Et Al: Seasonal Shift Of the Nitrate Sources In mentioning

confidence: 99%

Section: Hydrographic Characteristics and Nitrate Dynamics On The Conmentioning

confidence: 99%

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Seasonal shifts in the contributions of the Changjiang River and the Kuroshio Current to nitrate dynamics in the continental shelf of the northern East China Sea based on a nitrate dual isotopic composition approach

et al. 2014

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“…It is called the Yellow Sea Bottom Cold Water (YSBCW), which is defined as cold water with temperature below10 C [Hur et al, 1999;Zhang et al, 2008;Park et al, 2011]. The YSBCW is formed in winter and stored in the lower layer below the strong thermocline during summer.…”

Section: The Yellow Sea Bottom Cold Watermentioning

confidence: 99%

Climate change projection in the Northwest Pacific marginal seas through dynamic downscaling

et al. 2014

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This study presents future climate change projections in the Northwest Pacific (NWP) marginal seas using dynamic downscaling from global climate models (GCMs). A regional climate model (RCM) for the Northwest Pacific Ocean was setup and integrated over the period from 2001 to 2100. The model used forcing fields from three different GCM simulations to downscale the effect of global climate change. MIROC, ECHAM, and HADCM were selected to provide climate change signals for the RCM. These signals were calculated from the GCMs using Cyclostationary Empirical Orthogonal Function analysis and added to the present lateral open boundary and the surface forcing. The RCM was validated by comparing hindcast result with the observation. It was able to project detailed regional climate change processes that GCMs were not able to resolve. A relatively large increases of water temperature were found in the marginal seas. However, only a marginal change was found along the Kuroshio path. Heat supply to the atmosphere decreases in most study areas due to a slower warming of the sea surface compared to the atmosphere. The RCM projection suggests that the temperature of the Yellow Sea Bottom Cold Water will gradually increase by 2100. Volume transports through major straits except the Taiwan Strait in the marginal seas are projected to increase slightly in future. Increased northeasterly wind stress in the East China Sea may also result in the transport change.

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“…Due to its characteristic freshwater (S ≈ 0), we defined EM1 as CDW (Gong et al 1996). EM2 was defined as YSBCW because during the summer this water mass, which is typically characterized by T < 10°C and S < 33.7, extends to near Jeju Island in the nECS (Zhang et al 2008;Park et al 2011). Tsushima Warm Water (S > 34.5) is the dominant water mass occupying the surface and mid-depth levels in the study area, but its high vs. low T characteristics differs with depth (Chen et al 1995;Chen 1996).…”

Section: Physicochemical Characteristics Of the End-membersmentioning

confidence: 99%

Estimating Remineralized Phosphate and Its Remineralization Rate in the Northern East China Sea During Summer 1997: A Snapshot Study Before Three-Gorges Dam Construction

Kim¹,

Kim²,

Macdonald³

et al. 2016

Terr. Atmos. Ocean. Sci.

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The northern East China Sea (a.k.a., "The South Sea") is a dynamic zone that exerts a variety of effects on the marine ecosystem due to Three-Gorges Dam construction. As the northern East China Sea region is vulnerable to climate forcing and anthropogenic impacts, it is important to investigate how the remineralization rate in the northern East China Sea has changed in response to such external forcing. We used an historical hydrographic dataset from August 1997 to obtain a baseline for future comparison. We estimate the amount of remineralized phosphate by decomposing the physical mixing and biogeochemical process effect using water column measurements (temperature, salinity, and phosphate). The estimated remineralized phosphate column inventory ranged from 0.8 to 42.4 mmol P m -2 (mean value of 15.2 ± 12.0 mmol P m -2 ). Our results suggest that the Tsushima Warm Current was a strong contributor to primary production during the summer of 1997 in the study area. The estimated summer (June -August) remineralization rate in the region before Three-Gorges Dam construction was 18 ± 14 mmol C m -2 d -1 .

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Observation of the seasonal evolution of the Yellow Sea Cold Water Mass in 1996–1998

Cited by 203 publications

References 12 publications

Seasonal shifts in the contributions of the Changjiang River and the Kuroshio Current to nitrate dynamics in the continental shelf of the northern East China Sea based on a nitrate dual isotopic composition approach

Seasonal shifts in the contributions of the Changjiang River and the Kuroshio Current to nitrate dynamics in the continental shelf of the northern East China Sea based on a nitrate dual isotopic composition approach

Climate change projection in the Northwest Pacific marginal seas through dynamic downscaling

Estimating Remineralized Phosphate and Its Remineralization Rate in the Northern East China Sea During Summer 1997: A Snapshot Study Before Three-Gorges Dam Construction

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