Institutional Repository of Key Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
| Chlorophyll variability induced by mesoscale eddies in the southeastern tropical Indian Ocean | |
Yang, Guang1,2,7; Zhao, Xia3,4,5 ; Li, Yuanlong3,4,5; Liu, Lin1,2,7; Wang, Fan3,4,5; Yu, Weidong2,6
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| 2019-11-01 | |
| Source Publication | JOURNAL OF MARINE SYSTEMS
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| ISSN | 0924-7963 |
| Volume | 199Pages:10 |
| Corresponding Author | Yu, Weidong(wdyu@fio.org.cn) |
| Abstract | High sea surface chlorophyll-a concentrations (CHL) and intensive mesoscale eddy activity coexist near the coast of Java in the southeastern tropical Indian Ocean (SETIO) in upwelling season (July-November). In this study, the modulation effects of mesoscale eddies on the local CHL variability are investigated by analyzing remote sensed as well as in situ observations together with ocean and atmospheric reanalysis data from 1997 to 2010. Within 400 km off the coast, the mean CHL inside cyclonic eddies (CEs) is 2-3-fold higher than background, and is obviously suppressed inside anticyclonic eddies (AEs). During upwelling season, more and stronger CEs are generated, which significantly contributes to the high mean CHL levels. A composite analysis revealed that CEs induce CHL anomalies through both vertical upwelling that elevates nutrient-rich water from the subsurface to the surface and horizontal advection that carries high-CHL water from the coast to the offshore area. These effects are particularly visible during the upwelling season, when advection of the background high CHL favors large eddy modulation on the CHL. The eddy-induced CHL anomalies also exhibit prominent interannual variability, which has a close relationship with the El Nino-Southern Oscillation and the Indian Ocean Dipole (IOD). The wind forcing of El Nino and positive IOD events can enhance the vertical shear of the background currents and favor energetic CEs off Java coast, which contributes to the interannual variability of the local CHL. These results underscore the fundamental role played by mesoscale eddies in the ocean dynamics, environment, and bio-system of this region. |
| Keyword | Mesoscale eddies Chlorophyll-a Southeastern tropical Indian Ocean Upwelling season |
| DOI | 10.1016/j.jmarsys.2019.103209 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key Research and Development Program of China[2017YFC1405100] ; Basic Scientific Fund for National Public Research Institutes of China[2017S02] ; Indian Ocean Ninety-east Ridge Ecosystem and Marine Environment Monitoring and Protection ; China Ocean Mineral Resources RD Association[DY135E2-4] ; Global Change and Air-Sea Interaction Program[GASI-IPOVAI03] ; Global Change and Air-Sea Interaction Program[GASI-IPOVAI-02] ; Global Change and Air-Sea Interaction Program[GASI-02-IND-STSaut] ; Global Change and Air-Sea Interaction Program[GASI-02-IND-STSwin] ; Natural Science Foundation of China (NSFC)[41406028] ; Natural Science Foundation of China (NSFC)[41475084] ; Natural Science Foundation of China (NSFC)[41876028] ; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1406404] ; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1606405] ; State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences[LT01803] |
| WOS Research Area | Geology ; Marine & Freshwater Biology ; Oceanography |
| WOS Subject | Geosciences, Multidisciplinary ; Marine & Freshwater Biology ; Oceanography |
| WOS ID | WOS:000486133400002 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qdio.ac.cn/handle/337002/162829 |
| Collection | 海洋环流与波动重点实验室 |
| Corresponding Author | Yu, Weidong |
| Affiliation | 1.Minist Nat Resources, Inst Oceanog 1, Ctr Ocean & Climate Res, Qingdao 266061, Shandong, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao 266061, Shandong, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Shandong, Peoples R China 4.Qingdao Natl Lab Marine Sci & Technol, Qingdao 266071, Shandong, Peoples R China 5.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Shandong, Peoples R China 6.Sun Yat Sen Univ, Sch Atmospher Sci, 2 Daxue Rd, Zhuhai 519082, Peoples R China 7.Minsitry Nat Resources, Key Lab Marine Sci & Numer Modeling, Qingdao 266061, Shandong, Peoples R China |
| Recommended Citation GB/T 7714 | Yang, Guang,Zhao, Xia,Li, Yuanlong,et al. Chlorophyll variability induced by mesoscale eddies in the southeastern tropical Indian Ocean[J]. JOURNAL OF MARINE SYSTEMS,2019,199:10. |
| APA | Yang, Guang,Zhao, Xia,Li, Yuanlong,Liu, Lin,Wang, Fan,&Yu, Weidong.(2019).Chlorophyll variability induced by mesoscale eddies in the southeastern tropical Indian Ocean.JOURNAL OF MARINE SYSTEMS,199,10. |
| MLA | Yang, Guang,et al."Chlorophyll variability induced by mesoscale eddies in the southeastern tropical Indian Ocean".JOURNAL OF MARINE SYSTEMS 199(2019):10. |
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