| Application of LICOM to the numerical study of the water exchangebetween the South China Sea and its adjacent oceans |
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| 作者姓名： | CAI Shuqun LIU Hailong LI Wei LONG Xiaomin |
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| 作者单位： | CAI Shuqun1*，LIU Hailong2，LI Wei2，LONG Xiaomin11. Key Laboratory of Tropical Marine Environmental Dynamics (LED)，South China Sea Institute of Oceanology，Chinese Academy ofSciences，Guangzhou 510301，China2. State Key Laboratory of Numberical Modelling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG)，Institute of At-mospheric Physics，Chinese Academy of Sciences，Beijing 100029，China |
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| 基金项目： | 国家自然科学基金，国家重点基础研究发展计划(973计划)，国家特殊工程项目，the Knowledge Innovation Frontier Project of SCSIO under contract |
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| 摘 要： | 1 IntroductionThe South China Sea (SCS) is the largestmarginal sea in the western Pacific (see Fig. 1). It con-nects with the SCS through the Taiwan Strait, with thePacific through the Luzon Strait, with the Sulu Seathrough the Mindoro and Balabac Straits and with theJava Sea and Andaman Sea through the Sunda Shelf(For convenience, here we refer to the section at 1.5°N,Fig. 2). It is shown that the seasonal SCS circulation ismostly affected by the summer/winter monsoon, andthe no…
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| 关 键 词： | 中国 南海 水交换 邻近区域 热传递 数学模型 |
| 收稿时间： | 2005-03-25 |
| 修稿时间： | 2005-07-03 |
Application of LICOM to the numerical study of the water exchangebetween the South China Sea and its adjacent oceans |
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| CAI Shuqun,LIU Hailong,LI Wei,LONG Xiaomin.Application of LICOM to the numerical study of the water exchangebetween the South China Sea and its adjacent oceans[J].Acta Oceanologica Sinica,2005,24(4):10-19. |
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| Authors: | CAI Shuqun LIU Hailong LI Wei and LONG Xiaomin |
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| Institution: | 1.Key Laboratory of Tropical Marine Environmental Dynamics(LED), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China2.State Key Laboratory of Numberical Modelling for Atmospheric Sciences and Geophysical Fluid Dynamics(LASG), Institute of At-mospheric Physics, Chinese Academy of Sciences, Beijing 100029, China |
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| Abstract: | On the basis of 900-year integration of a global ocean circulation model-LICOM driven by ECMWF reanalysis wind data with uniform 0.5°-grids, a quantitative estimate of the annual and monthly mean water exchange of the South China Sea (SCS) with its adjacent oceans through 5 straits is obtained. Among them, the annual transport is the largest in the Luzon Strait, then in the Taiwan Strait, and then in the Sunda Shelf, in the Balabac Strait and in the Mindoro Strait in turn, the largest monthly transport variation appears in the Luzon Strait and Sunda shelf. It is shown that the mass transport through the Taiwan Strait is affected by monsoon, while the transport through the Luzon Strait may be associated with the bifurcation position of the North Equatorial Current off the east Philippines shore;the transports in the Luzon Strait and Sunda Shelf are out of phase in direction but well correlated in magnitude. The annual and monthly mean heat and salinity exchange of the SCS through the straits are also calculated and shown to be in phase with the mass transport. The Kuroshio water carries about 0.43 PW heat transport and 151.33 kt/s salinity transport into the SCS, while most of them is carried out of the SCS through the Taiwan Strait and Sunda Shelf annually. The further model integration based on the 900-year integration for another 44 a from 1958 to 2001 driven by real wind data (ERA40 data) shows that the monthly mean mass transport via these straits varies annually with a large variation range, which may be associated with the seasonal and interannual variations in the current field and sea surface height in the SCS. The mean mass transport through the Taiwan Strait, Luzon Strait, Mindoro Strait, Balabac Strait and Sunda Shelf is 2.012 × 106, -4.063 × 106, -0.124 × 106, -0.083 × 106 and 2.258 × 106 m3/s, respectively. |
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| Keywords: | mass transport heat transport salinity transport numerical model South China Sea |
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