Impact of nonlinear mesoscale eddy on phytoplankton distribution in the northern South China Sea

Liu, Fenfen; Tang, Shilin; Chen, Chuqun

doi:10.1016/j.jmarsys.2013.04.005

Cited by 36 publications

(26 citation statements)

References 48 publications

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“…In the SCS, eddy advection, eddy pumping, and eddyinduced Ekman pumping greatly influence distribution of sea surface CHL concentration based on satellite observations (Liu et al 2013;Chen et al 2014;Li et al 2014). Sea surface CHL in the eddy interior can be different among eddies if biogeochemical cycles are controlled by different physical processes.…”

Section: Satellite and Model Comparisonmentioning

confidence: 99%

“…This interpretation has been tested statistically in biooptical footprint studies (Chelton et al 2011a;Siegel et al 2011;Liu et al 2013). Horizontal advection of CHL by eddy rotation was investigated in previous studies (Chelton et al 2011a;Siegel et al 2011).…”

Section: Satellite and Model Comparisonmentioning

confidence: 99%

“…Enhanced primary productions in cyclonic eddies and deficient nutrients in anticyclonic eddies found by these studies suggested that eddy pumping may be a key factor in biogeochemical cycles. Composite analysis of sea surface CHL anomaly based on satellite data revealed that eddyinduced advection of CHL contributed to the propagation of CHL in the northern SCS where phytoplankton blooms were usually observed in winter Liu et al 2013). Other studies found that eddy-induced Ekman pumping could explain high CHL concentration in the interior of anticyclonic eddies in the SCS (Li et al 2014).…”

Section: Introductionmentioning

confidence: 97%

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Impacts of mesoscale eddies in the South China Sea on biogeochemical cycles

et al. 2015

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Biogeochemical cycles associated with mesoscale eddies in the South China Sea (SCS) were investigated. The study was based on a coupled physical-biogeochemical Pacific Ocean model (Regional Ocean Model SystemCarbon, Silicate, and Nitrogen Ecosystem, ROMS-CoSiNE) simulation for the period from 1991 to 2008. A total of 568 mesoscale eddies with lifetime longer than 30 days were used in the analysis. Composite analysis revealed that the cyclonic eddies were associated with abundance of nutrients, phytoplankton, and zooplankton while the anticyclonic eddies depressed biogeochemical cycles, which are generally controlled by the eddy pumping mechanism. In addition, diatoms were dominant in phytoplankton species due to the abundance of silicate. Dipole structures of vertical fluxes with net upward motion in cyclonic eddies and net downward motion in anticyclonic eddies were revealed. During the lifetime of an eddy, the evolutions of physical, biological, and chemical structures were not linearly coupled at the eddy core where plankton grew, and composition of the community depended not only on the physical and chemical processes but also on the adjustments by the predator-prey relationship.

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Section: Satellite and Model Comparisonmentioning

confidence: 99%

Section: Satellite and Model Comparisonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

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Impacts of mesoscale eddies in the South China Sea on biogeochemical cycles

et al. 2015

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“…It is one of the most important areas frequently affected by TCs [46,47]. Mesoscale eddies are ubiquitous across the SCS and play an important role in regional energy exchange and material transport [33,[48][49][50][51]. Previous studies have shown that warm ocean eddies also affect TC intensity changes in the SCS [52]; however, it is still not clear how warm ocean eddies interact with TCs and whether the interactions vary across the SCS.…”

Section: Study Areamentioning

confidence: 99%

“…Ocean eddies, which are ubiquitous ocean phenomena [30,31], play an important role in transporting and exchanging both physical and chemical constituents (i.e., heat, momentum, mass, chlorophyll) within oceans [32][33][34]. Both warm and cold ocean eddies may modify the upper-ocean mixed layer.…”

Section: Introductionmentioning

confidence: 99%

A GIS Study of the Influences of Warm Ocean Eddies on the Intensity Variations of Tropical Cyclones in the South China Sea

Feng

Peng

et al. 2016

IJGI

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This study presented the spatial distribution patterns of tropical cyclones (TCs) in the South China Sea (SCS) and discussed the possible influences of average sea surface temperature (SST) and the size of warm ocean eddies on changes in the intensity of TCs passing over them. Between 1993 and 2013, the SCS has experienced 233 TCs, of which 134 have interacted with warm ocean eddies. The results of fuzzy c-means (FCM) clustering showed that these TCs are mainly located in the northern portion of the SCS. After interacting with warm ocean eddies, TCs may intensify, remain at the same intensity, or weaken. For intensifying TCs, the enhancements range from 0 to 3 m/s only; however, this level of TC intensity enhancement is statistically significant at p<0.05. Further statistical analyses show that warm ocean eddies with a higher-than-average SST and a larger ratio between the size of the warm ocean eddies and the radius of the TC maximum wind may help intensify passing TCs.

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Seasonal variability and mechanisms regulating chlorophyll distribution in mesoscale eddies in the South China Sea

Guo

Xiu

et al. 2017

JGR Oceans

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This study shows that the response of satellite‐observed chlorophyll (CHL) to eddy motion varies seasonally in the South China Sea (SCS). The spatial pattern of the CHL anomaly composite for eddies is a dipole in summer and a monopole in winter, indicating that sea surface CHL is largely regulated by the horizontal rotational velocity of the eddy in summer and by eddy pumping and trapping in winter. The dipole pattern for anticyclonic eddies was confirmed by in situ observations, which also show that the dipole pattern is mainly restricted to the mixed layer. The underlying mechanism was further investigated with a coupled physical–biogeochemical model. The key driver leading to the seasonal variation of the eddy effect is found to be the seasonal variation of the mixed layer depth. In summer when the mixed layer is shallow, the monopole nutrient change induced by eddy is restricted to the subsurface. The sea surface CHL distribution is thus mostly affected by eddy advection. In winter, the deepening of the mixed layer mixes the nutrients from subsurface where eddy significantly changes the nutrient levels, allowing the monopole pattern to be observed in the sea surface CHL anomaly.

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Impact of nonlinear mesoscale eddy on phytoplankton distribution in the northern South China Sea

Cited by 36 publications

References 48 publications

Impacts of mesoscale eddies in the South China Sea on biogeochemical cycles

Impacts of mesoscale eddies in the South China Sea on biogeochemical cycles

A GIS Study of the Influences of Warm Ocean Eddies on the Intensity Variations of Tropical Cyclones in the South China Sea

Seasonal variability and mechanisms regulating chlorophyll distribution in mesoscale eddies in the South China Sea

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