| 1998年夏季季风爆发前后南海上层环流的诊断分析 |
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| 引用本文： | 王桂华,许建平.1998年夏季季风爆发前后南海上层环流的诊断分析[J].热带海洋学报,2001,20(1):36-43. |
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| 作者姓名： | 王桂华 许建平 |
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| 作者单位： | 国家海洋局第二海洋研究所, |
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| 基金项目： | “九五”国家攀登计划“南海季风试验”资助项目，国家重点基础研究发展规划项目! (G1 9990 4 3 80 5)，国
家海洋局资助项目 |
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| 摘 要： | 基于1998年南海季风试验（SCSMEX，South China Sea Monsoon Experiment)期间2个强化观测航次（4－5月及6－7）所获温盐深（CTD）资料，利用一个改进逆模式研究了夏季季风爆发前后南海环流的演变特征。诊断计算表明，在此期间南海环流主要表现为两脊两槽型，即越南以东和菲律宾以西呈反气旋式环流，南海北部和南海中部呈气旋式环流。但对局部区域而言，可以发现在季风爆发前后其环流结构有明显的差异。上述计算结果亦与等压面上海水密度分布的定性分析结果及同期观测的ADCP资料进行了比较，结果表明模式计算所得到的南海上层环流主要特征与定性分析结果及实测资料大体一致，诊断结果可作为南海上层季风环流演变机制研究的依据。
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| 关 键 词： | 改进逆模式 季风爆发 南海 环流 1998年 夏季 |
| 文章编号： | 1009-5470(2001)01-0036-08 |
| 修稿时间： | 2000年6月28日 |
DIAGNOSTIC ANALYSIS ON UPPER CIRCULATION VARIATION IN SOUTH CHINA SEA AROUND ONSET OF SUMMER MONSOON IN 1998 |
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| WANG Gui-hua,XU Jian-ping.DIAGNOSTIC ANALYSIS ON UPPER CIRCULATION VARIATION IN SOUTH CHINA SEA AROUND ONSET OF SUMMER MONSOON IN 1998[J].Journal of Tropical Oceanography,2001,20(1):36-43. |
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| Authors: | WANG Gui-hua XU Jian-ping |
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| Abstract: | Based on the CTD data of two cruises of South China Sea (SCS)Monsoon Experiment from April to May and June to July of 1998, a modified inverse method is used to study the SCS circulation variation around the onset of the summer monsoon. The diagnostic results show that the SCS circulation displayed two high pressure zones and two low pressure zones during this period, i.e., there were anticyclonic circulations to the east of Vietnam and to the west of Philippine, and cyclonic circulations in the north and middle of the SCS. For some local areas, there existed some apparent differences in the circulation structures around the monsoon onset. The result by model is also compared with the qualitative analytic result of the density distribution on the isobaric surface and the ADCP data. The results show that they nearly have the same structure, suggesting that the diagnostic result can be used to further study the dynamics of upper circulation variation in the SCS. |
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| Keywords: | modified inverse method monsoon onset SCS circulation |
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