Seasonal characteristics and formation mechanism of the thermohaline structure of mesoscale eddy in the South China Sea

Zu Yongcan; Sun Shuangwen; Zhao Wei; Li Peiliang; Liu Baochao; Fang Yue; Samah Azizan Abu

doi:10.1007/s13131-018-1222-4

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Article Navigation > Acta Oceanologica Sinica > 2019 > 38(4): 29-38

Zu Yongcan, Sun Shuangwen, Zhao Wei, Li Peiliang, Liu Baochao, Fang Yue, Samah Azizan Abu. Seasonal characteristics and formation mechanism of the thermohaline structure of mesoscale eddy in the South China Sea[J]. Acta Oceanologica Sinica, 2019, 38(4): 29-38. doi: 10.1007/s13131-018-1222-4

Citation:

Zu Yongcan, Sun Shuangwen, Zhao Wei, Li Peiliang, Liu Baochao, Fang Yue, Samah Azizan Abu. Seasonal characteristics and formation mechanism of the thermohaline structure of mesoscale eddy in the South China Sea[J]. Acta Oceanologica Sinica, 2019, 38(4): 29-38. doi: 10.1007/s13131-018-1222-4

Citation:

Zu Yongcan, Sun Shuangwen, Zhao Wei, Li Peiliang, Liu Baochao, Fang Yue, Samah Azizan Abu. Seasonal characteristics and formation mechanism of the thermohaline structure of mesoscale eddy in the South China Sea[J]. Acta Oceanologica Sinica, 2019, 38(4): 29-38. doi: 10.1007/s13131-018-1222-4

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Seasonal characteristics and formation mechanism of the thermohaline structure of mesoscale eddy in the South China Sea

doi: 10.1007/s13131-018-1222-4

1.
College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266100, China;Center for Ocean and Climate Research, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
2.
Center for Ocean and Climate Research, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China;Laboratory for Regional Oceanography and Numerical Modeling, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China
3.
College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266100, China
4.
Ocean College, Zhejiang University, Zhoushan 316021, China
5.
Center for Ocean and Climate Research, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
6.
Institute of Ocean and Earth Sciences, University of Malaya, Kuala Lumpur 50603, Malaysia

Received Date: 2018-03-08

Abstract

Abstract

The seasonal characteristics and formation mechanism of the thermohaline structure of mesoscale eddy in the South China Sea are investigated using the latest eddy dataset and ARMOR3D data. Eddy-centric composites reveal that the horizontal distribution of temperature anomaly associated with eddy in winter is more of a dipole pattern in upper 50 m and tends to be centrosymmetric below 50 m, while in summer the distribution pattern is centrosymmetric in the entire water column. The horizontal distribution of eddy-induced salinity anomaly exhibits similar seasonal characteristics, except that the asymmetry of the salinity anomaly is weaker. The vertical distribution of temperature anomaly associated with eddy shows a monolayer structure, while the salinity anomaly demonstrates a triple-layer structure. Further analysis indicates that the vertical distribution of the anomalies is related to the vertical structure of background temperature and salinity fields, and the asymmetry of the anomalies in upper 50 m is mainly caused by the horizontal advection of background temperature and salinity.
- mesoscale eddy,
- thermohaline structure,
- seasonal characteristics,
- South China Sea

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References(31)

References

Amores A, Melnichenko O, Maximenko N. 2017a. Coherent mesoscale eddies in the North Atlantic subtropical gyre:3-D structure and transport with application to the salinity maximum. Journal of Geophysical Research:Oceans, 122(1):23-41, doi: 10.1002/jgrc.v122.1

Amores A, Monserrat S, Melnichenko O, et al. 2017b. On the shape of sea level anomaly signal on periphery of mesoscale ocean eddies. Geophysical Research Letters, 44(13):6926-6932, doi: 10.1002/2017GL073978

Chelton D B, Schlax M G, Samelson R M, et al. 2007. Global observations of large oceanic eddies. Geophysical Research Letters, 34(15):L15606

Chelton D B, Schlax M G, Samelson R M. 2011. Global observations of nonlinear mesoscale eddies. Progress in Oceanography, 91(2):167-216, doi: 10.1016/j.pocean.2011.01.002

Chen Gengxin, Hou Yijun, Chu Xiaoqing. 2011. Mesoscale eddies in the South China Sea:Mean properties, spatiotemporal variability, and impact on thermohaline structure. Journal of Geophysical Research:Oceans, 116(6):C06018

Chen Gengxin, Wang Dongxiao, Dong Changming, et al. 2015. Observed deep energetic eddies by seamount wake. Scientific Reports, 5:17416, doi: 10.1038/srep17416

Dong Changming, McWilliams J C, Liu Yu, et al. 2014. Global heat and salt transports by eddy movement. Nature Communications, 5:3294, doi: 10.1038/ncomms4294

Faghmous J H, Frenger I, Yao Yuanshun, et al. 2015. A daily global mesoscale ocean eddy dataset from satellite altimetry. Scientific Data, 2:150028, doi: 10.1038/sdata.2015.28

Falkowski P G, Ziemann D, Kolber Z, et al. 1991. Role of eddy pumping in enhancing primary production in the ocean. Nature, 352(6330):55-58, doi: 10.1038/352055a0

Fang Yue, Fang Guohong, Yu Kejun. 1996. ADI barotropic ocean model for simulation of Kuroshio intrusion into China southeastern waters. Chinese Journal of Oceanology and Limnology, 14(4):357-366, doi: 10.1007/BF02850557

Fang Guohong, Wang Gang, Fang Yue, et al. 2012. A review on the South China Sea western boundary current. Acta Oceanologica Sinica, 31(5):1-10, doi: 10.1007/s13131-012-0231-y

Frenger I, Münnich M, Gruber N, et al. 2015. Southern Ocean eddy phenomenology. Journal of Geophysical Research:Oceans, 120(11):7413-7449, doi: 10.1002/2015JC011047

Gaube P, McGillicuddy D J Jr, Chelton D B, et al. 2014. Regional variations in the influence of mesoscale eddies on near-surface chlorophyll. Journal of Geophysical Research:Oceans, 119(12):8195-8220, doi: 10.1002/2014JC010111

Guinehut S, Le Traon P Y, Larnicol G, et al. 2004. Combining Argo and remote-sensing data to estimate the ocean three-dimensional temperature fields-a first approach based on simulated observations. Journal of Marine Systems, 46(1-4):85-98

Guinehut S, Dhomps A L, Larnicol G, et al. 2012. High resolution 3-D temperature and salinity fields derived from in situ and satellite observations. Ocean Science, 8(5):845-857, doi: 10.5194/os-8-845-2012

Hu Jianyu, Gan Jianping, Sun Zhenyu, et al. 2011. Observed three-dimensional structure of a cold eddy in the southwestern South China Sea. Journal of Geophysical Research:Oceans, 116(5):C05016

Hu Zifeng, Tan Yehui, Song Xingyu, et al. 2014. Influence of mesoscale eddies on primary production in the South China Sea during spring inter-monsoon period. Acta Oceanologica Sinica, 33(3):118-128, doi: 10.1007/s13131-014-0431-8

Huang Bangqin, Hu Jun, Xu Hongzhou, et al. 2010. Phytoplankton community at warm eddies in the northern South China Sea in winter 2003/2004. Deep Sea Research Part Ⅱ:Topical Studies in Oceanography, 57(19-20):1792-1798

Klein P, Lapeyre G. 2009. The oceanic vertical pump induced by mesoscale and submesoscale turbulence. Annual Review of Marine Science, 1:351-375, doi: 10.1146/annurev.marine.010908.163704

Mason E, Pascual A, Gaube P, et al. 2017. Subregional characterization of mesoscale eddies across the Brazil-Malvinas confluence. Journal of Geophysical Research:Oceans, 122(4):3329-3357, doi: 10.1002/2016JC012611

Mulet S, Rio M H, Mignot A, et al. 2012. A new estimate of the global 3D geostrophic ocean circulation based on satellite data and in-situ measurements. Deep Sea Research Part Ⅱ:Topical Studies in Oceanography, 77-80:70-81

Nan Feng, He Zhigang, Zhou Hui, et al. 2011. Three long-lived anticyclonic eddies in the northern South China Sea. Journal of Geophysical Research:Oceans, 116(C5):C05002

Shu Yeqiang, Xiu Peng, Xue Huijie, et al. 2016. Glider-observed anticyclonic eddy in northern South China Sea. Aquatic Ecosystem Health & Management, 19(3):233-241

Small R J, De Szoeke, Xie Shangping, et al. 2008. Air-sea interaction over ocean fronts and eddies. Dynamics of Atmospheres and Oceans, 45(3-4):274-319

Sun Shuangwen, Fang Yue, Liu Baochao, et al. 2016. Coupling between SST and wind speed over mesoscale eddies in the South China Sea. Ocean Dynamics, 66(11):1467-1474, doi: 10.1007/s10236-016-0993-4

Wang Dongxiao, Xu Hongzhou, Lin Jing, et al. 2008. Anticyclonic eddies in the northeastern South China Sea during winter 2003/2004. Journal of Oceanography, 64(6):925-935, doi: 10.1007/s10872-008-0076-3

Wang Qiang, Zeng Lili, Zhou Weidong, et al. 2015. Mesoscale eddies cases study at Xisha waters in the South China Sea in 2009/2010. Journal of Geophysical Research:Oceans, 120(1):517-532, doi: 10.1002/2014JC009814

Wyrtki K. 1961. Physical Oceanography of the Southeast Asian Waters. UC San Diego:Scripps Institution of Oceanography, 144-182

Zhang Zhengguang, Wang Wei, Qiu Bo. 2014. Oceanic mass transport by mesoscale eddies. Science, 345(6194):322-324, doi: 10.1126/science.1252418

Zhang Zhiwei, Tian Jiwei, Qiu Bo, et al. 2016. Observed 3D structure, generation, and dissipation of oceanic mesoscale eddies in the South China Sea. Scientific Reports, 6:24349, doi: 10.1038/srep24349

Zu Tingting, Wang Dongxiao, Yan Changxiang, et al. 2013. Evolution of an anticyclonic eddy southwest of Taiwan. Ocean Dynamics, 63(5):519-531, doi: 10.1007/s10236-013-0612-6

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