The role of atmospheric circulation in spatial and temporal variations in the structure of currents in the western South China Sea

Vlasova, Galina; Деменок, М Н; Xuan, Nguyen Ba; Long, Bui Hong

doi:10.1134/s0001433816030130

Cited by 5 publications

(2 citation statements)

References 11 publications

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“…The overall natural environmental condition of the SCS depends largely on the regional atmospheric circulation system (seasonal monsoon, trade winds, typhoons), whilst these circulation systems in turn influence the formation of the ocean current structure and its spatiotemporal changes [67]. Among these circulation systems, the Northwest Pacific subtropical high (NWPSH; 500-hPa geopotential height field shows significant anticyclonic, and the center is generally accompanied by a descending ) has a greater influence on, or control over, the East Asian summer monsoon, which is most significant in the middle troposphere, and has a more direct and significant impact on the SCS climate [68].…”

Section: Classification Of Synoptic Typesmentioning

confidence: 99%

Association between the Biophysical Environment in Coastal South China Sea and Large-Scale Synoptic Circulation Patterns: The Role of the Northwest Pacific Subtropical High and Typhoons

et al. 2021

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Synoptic weather conditions can modulate short-term variations in the marine biophysical environment. However, the impact of large-scale synoptic circulation patterns (LSCPs) on variations in chlorophyll-a (chl-a) and sea surface temperature (SST) in the South China Sea (SCS) remains unclear. Using a T-mode principal component analysis method, four types of LSCP related to the Northwest Pacific subtropical high are objectively identified over the SCS for the summers of 2015–2018. Type 1 exhibits a lower chl-a concentration of <0.3 mg m−3 offshore of southern Vietnam with respect to the other three types. For Type 2, the high chl-a concentration zone (>0.3 mg m−3) along the coast of Guangdong exhibits the widest areas of coverage. The offshore chl-a bloom jet (>0.3 mg m−3) formed in southern Vietnam is the most obvious under Type 3. Under Type 4, the high chl-a concentration zone along the coast of Guangdong is the narrowest, while the chl-a concentration in the middle of the SCS is the lowest (<0.1 mg m−3). These type differences are mostly caused by the various monsoon circulations, local ocean mesoscale processes and resultant differences in localized precipitation, wind vectors, photosynthetically active radiation and SST. In particular, precipitation over land helps to transport nutrients from the land to the shore, which is conducive to the increase of chl-a. However, precipitation over ocean will dilute the upper seawater and reduce chl-a. Typhoons pump the deeper seawater with nutrients to the surface, and therefore make a positive contribution to chl-a in most offshore areas; however, they also disturb shallower water and hinder the growth of phytoplankton, making a negative contribution near the coast of Guangdong. In general, our findings will provide a better understanding of wind pump impact: the responses of marine biophysical environments to LSCPs.

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Section: Classification Of Synoptic Typesmentioning

confidence: 99%

Association between the Biophysical Environment in Coastal South China Sea and Large-Scale Synoptic Circulation Patterns: The Role of the Northwest Pacific Subtropical High and Typhoons

et al. 2021

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“…To solve these problems, a known quasigeostrophic model of water circulation was used [Felsenbaum, 1956[Felsenbaum, , 1970Shapiro, 1965;Vasiliev, 2001, et al]. This model has been repeatedly described in monographs and articles [Polyakova et al, 2002;Vlasova et al, 2008Vlasova et al, , 2016aVlasova et al, , 2016b, so here we are limited to its main characteristics.…”

Section: Methodsmentioning

confidence: 99%

Modeling spring hydrodynamic regime of surface waters in Kamchatka Strait

Vlasova¹,

Marchenko²,

Rudykh³

2019

Russ. J. Earth Sci.

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On the basis of numerical modeling, an analysis of the average multiyear pattern of the spring circulation of surface waters in the Kamchatka Strait is performed. It was revealed that in the spring period the winter regime of water circulation continues here, however, the transition to the summer circulation mode begins and the influx of warm Pacific water masses to the Bering Sea is intensifying. The results obtained are somewhat different from the generally accepted ones.

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Tropical Cyclone in the North of the South China Sea as a Factor Affecting the Structure of the Vietnamese Current

Vlasova

Xuan

Деменок

et al. 2020

Izv. Atmos. Ocean. Phys.

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The role of atmospheric circulation in spatial and temporal variations in the structure of currents in the western South China Sea

Cited by 5 publications

References 11 publications

Association between the Biophysical Environment in Coastal South China Sea and Large-Scale Synoptic Circulation Patterns: The Role of the Northwest Pacific Subtropical High and Typhoons

Association between the Biophysical Environment in Coastal South China Sea and Large-Scale Synoptic Circulation Patterns: The Role of the Northwest Pacific Subtropical High and Typhoons

Modeling spring hydrodynamic regime of surface waters in Kamchatka Strait

Tropical Cyclone in the North of the South China Sea as a Factor Affecting the Structure of the Vietnamese Current

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