Seasonal and spatial variability of surface chlorophyll inside mesoscale eddies in the South China Sea
Xiu, Peng; Guo, Mingxian; Zeng, Lili; Liu, Na; Chai, Fei; Xiu, P (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China.
2016
发表期刊AQUATIC ECOSYSTEM HEALTH & MANAGEMENT
卷号19期号:3页码:250-259
摘要Mesoscale eddies can influence biogeochemical cycles through both vertical nutrient or plankton flux and horizontal advection of nutrient or plankton in eddy periphery. In this study, we analyzed the seasonal and spatial variability of near-sea-surface chlorophyll-a concentrations and their corresponding modulation mechanisms by collocating satellite observations of eddies tracked during 1998-2007 in the South China Sea. We found that in winter, cyclonic eddies show significantly high chlorophyll-a in the eddy core relative to the periphery, suggesting regulation by an eddy-pumping mechanism. While in summer, chlorophyll-a values in the core of cyclonic eddies are comparable with those in the periphery, and dipole features of chlorophyll-a around cyclonic eddies are conspicuous, which is largely induced by horizontal eddy advection. For anticyclonic eddies, however, low chlorophyll-a in eddy cores compared with the periphery are consistently present over most of the year. The impact of eddy advection on chlorophyll-a distribution in anticyclonic eddies is not clear from the composite images in different seasons. Variability of chlorophyll-a to the west of the Luzon Strait and northwest of the Luzon Island demonstrate that phytoplankton biomass in these two regions is mainly controlled by an eddy-pumping mechanism. In the regions off the Vietnam coast, chlorophyll-a distributions are generally associated with horizontal eddy advection. This research highlights different mesoscale mechanisms affecting biological structures in the upper ocean, which can potentially disturb ocean biogeochemical cycling processes in the South China Sea.
部门归属[Xiu, Peng; Guo, Mingxian; Zeng, Lili; Liu, Na] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China; [Guo, Mingxian] Sun Yat Sen Univ, Sch Environm Sci & Engn, Guangdong Prov Key Lab Environm Pollut Control &, Guangzhou 510275, Guangdong, Peoples R China; [Chai, Fei] State Ocean Adm, Inst Oceanog 2, State Key Lab Satellite Ocean Environm Dynam, Hangzhou 310012, Zhejiang, Peoples R China; [Chai, Fei] Univ Maine, Sch Marine Sci, Orono, ME USA ; LTO
关键词Mesoscale Eddy Eddy Pumping
学科领域Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/15572
专题热带海洋环境国家重点实验室(LTO)
通讯作者Xiu, P (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China.
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Xiu, Peng,Guo, Mingxian,Zeng, Lili,et al. Seasonal and spatial variability of surface chlorophyll inside mesoscale eddies in the South China Sea[J]. AQUATIC ECOSYSTEM HEALTH & MANAGEMENT,2016,19(3):250-259.
APA Xiu, Peng,Guo, Mingxian,Zeng, Lili,Liu, Na,Chai, Fei,&Xiu, P .(2016).Seasonal and spatial variability of surface chlorophyll inside mesoscale eddies in the South China Sea.AQUATIC ECOSYSTEM HEALTH & MANAGEMENT,19(3),250-259.
MLA Xiu, Peng,et al."Seasonal and spatial variability of surface chlorophyll inside mesoscale eddies in the South China Sea".AQUATIC ECOSYSTEM HEALTH & MANAGEMENT 19.3(2016):250-259.
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