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

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...

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Main Authors: Zu, Yongcan, Sun, Shuangwen, Zhao, Wei, Li, Peiliang, Liu, Baochao, Fang, Yue, Samah, Azizan Abu
Format: Article
Published: Springer Verlag 2019
Subjects:
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author Zu, Yongcan
Sun, Shuangwen
Zhao, Wei
Li, Peiliang
Liu, Baochao
Fang, Yue
Samah, Azizan Abu
author_facet Zu, Yongcan
Sun, Shuangwen
Zhao, Wei
Li, Peiliang
Liu, Baochao
Fang, Yue
Samah, Azizan Abu
author_sort Zu, Yongcan
collection UM
description 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.
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spelling um.eprints-228902019-10-31T07:56:54Z http://eprints.um.edu.my/22890/ 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 Q Science (General) QH Natural history 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. Springer Verlag 2019 Article PeerReviewed Zu, Yongcan and Sun, Shuangwen and Zhao, Wei and Li, Peiliang and Liu, Baochao and Fang, Yue and Samah, Azizan Abu (2019) Seasonal characteristics and formation mechanism of the thermohaline structure of mesoscale eddy in the South China Sea. Acta Oceanologica Sinica, 38 (4). pp. 29-38. ISSN 0253-505X, DOI https://doi.org/10.1007/s13131-018-1222-4 <https://doi.org/10.1007/s13131-018-1222-4>. https://doi.org/10.1007/s13131-018-1222-4 doi:10.1007/s13131-018-1222-4
spellingShingle Q Science (General)
QH Natural history
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
title Seasonal characteristics and formation mechanism of the thermohaline structure of mesoscale eddy in the South China Sea
title_full Seasonal characteristics and formation mechanism of the thermohaline structure of mesoscale eddy in the South China Sea
title_fullStr Seasonal characteristics and formation mechanism of the thermohaline structure of mesoscale eddy in the South China Sea
title_full_unstemmed Seasonal characteristics and formation mechanism of the thermohaline structure of mesoscale eddy in the South China Sea
title_short Seasonal characteristics and formation mechanism of the thermohaline structure of mesoscale eddy in the South China Sea
title_sort seasonal characteristics and formation mechanism of the thermohaline structure of mesoscale eddy in the south china sea
topic Q Science (General)
QH Natural history
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