| HE Zhigang,ZHANG Yan,WANG Dongxiao. 2013. Spring mesoscale high in the western South China Sea. Acta Oceanologica Sinica, 32(6):1－5 |
| Spring mesoscale high in the western South China Sea |
| Spring mesoscale high in the western South China Sea |
| Received:March 01, 2012 Revised:July 04, 2012 |
| DOI：10.1007/s13131-013-0318-0 |
| Key words:spring western South China Sea warm eddy |
| 中文关键词: spring western South China Sea warm eddy |
| 基金项目:The National Basic Research Program of China (973 Program) under contract No. 2011CB403504; the National Natural Science Foundation of China under contract No. 41071250; the Marine Science Foundation for Young Scientists of State Oceanic Administration of China under contract No.2012221. |
| Author Name | Affiliation | E-mail | | HE Zhigang | State Key Laboratory of Tropical Oceanography(LTO), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
College of Ocean and Earth Sciences, Xiamen University, Xiamen 361005, China | | | ZHANG Yan | State Key Laboratory of Tropical Oceanography(LTO), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
South China Sea Marine Engineering Surveying Center, South China Sea Branch, State Oceanic Administration, Guangzhou 510300, China | | | WANG Dongxiao | State Key Laboratory of Tropical Oceanography(LTO), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China | dxwang@scsio.ac.cn |
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| Abstract: |
| A recurring spring mesoscale eddy in the western South China Sea (SCS) is studied using remote sensing data and historical in situ observations. The feature first appears east of the central Vietnam coast in February as a high sea-level anomaly, grows rapidly to a well-developed anticyclonic eddy by March, matures in April, and decays in May. Besides the warm-core feature, it also has an inherent low-salinity property, so it is named "spring mesoscale high (SMH)". Though with clear interannual variation in terms of intensity and spatial coverage, the SMH always emerges in the region between 110°E and 114°E and between 12°N and 16°N. The formation of SMH is ascribed to the combined effects of wind forcing and releasing of potential energy set up by winter monsoon. In particular, the wind-stress curl plays an important role in its development,maintenance, and dissipation. |
| 中文摘要: |
| A recurring spring mesoscale eddy in the western South China Sea (SCS) is studied using remote sensing data and historical in situ observations. The feature first appears east of the central Vietnam coast in February as a high sea-level anomaly, grows rapidly to a well-developed anticyclonic eddy by March, matures in April, and decays in May. Besides the warm-core feature, it also has an inherent low-salinity property, so it is named "spring mesoscale high (SMH)". Though with clear interannual variation in terms of intensity and spatial coverage, the SMH always emerges in the region between 110°E and 114°E and between 12°N and 16°N. The formation of SMH is ascribed to the combined effects of wind forcing and releasing of potential energy set up by winter monsoon. In particular, the wind-stress curl plays an important role in its development,maintenance, and dissipation. |
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