| 南海海面温度的年际模态及其与季风强迫的关系 |
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| 引用本文： | 朱秀华,王卫强,周伟东,王东晓,谢强.南海海面温度的年际模态及其与季风强迫的关系[J].热带海洋学报,2003,22(4):42-50. |
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| 作者姓名： | 朱秀华 王卫强 周伟东 王东晓 谢强 |
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| 作者单位： | 中国科学院南海海洋研究所热带海洋环境动力学重点实验室,广东,广州,510301 |
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| 基金项目： | 中国科学院百人计划项目(0300YQ000101)，中国科学院知识创新工程项目(KZCX2-202)，广东省自然科学基金(011271) |
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| 摘 要： | 通过对COADS和OISST海洋气象资料的分析，以南海的海面温度异常(SSTA)为指示因子，在研究年际尺度上的南海与大尺度ENSO关系的基础上，进一步探讨了季风强迫下Ekman抽吸对SSTA年际变化的贡献。研究发现，南海SSTA滞后5个月时与：Nifio 3的SSTA相关系数最大，且其年际变化依方差贡献大小，分别有42．7月、25．6月及36．6个月的周期，这3个年际模态基本上能够描述海面温度的年际变异，为南海在大尺度ENSO背景下存在区域响应提供了重要的证据；应用Krause—Turner混合层温度方程对南海异常暖事件的研究表明，除了经向风应力异常，Ekman抽吸也是影响SSTA年际变异的主要因素，在某些异常年份甚至是主导因素，为南海SSTA年际变化的研究提供了重要的补充。
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| 关 键 词： | 南海 SSTA 年际变化 Ekman抽吸 |
| 文章编号： | 1009-5470(2003)04-0042-09 |
| 修稿时间： | 2002年9月30日 |
INTERANNUAL MODE OF SEA SURFACE TEMPERATURE IN RELATION TO MONSOON FORCING IN SOUTH CHINA SEA |
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| ZHU Xiu-hua,WANG Wei-qiang,ZHOU Wei-dong,WANG Dong-xiao,XIE Qiang LED,South China Sea Institute of Oceanology,The Chinese Academy of Sciences,Guangzhou ,China.INTERANNUAL MODE OF SEA SURFACE TEMPERATURE IN RELATION TO MONSOON FORCING IN SOUTH CHINA SEA[J].Journal of Tropical Oceanography,2003,22(4):42-50. |
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| Authors: | ZHU Xiu-hua WANG Wei-qiang ZHOU Wei-dong WANG Dong-xiao XIE Qiang LED South China Sea Institute of Oceanology The Chinese Academy of Sciences Guangzhou China |
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| Institution: | ZHU Xiu-hua,WANG Wei-qiang,ZHOU Wei-dong,WANG Dong-xiao,XIE Qiang LED,South China Sea Institute of Oceanology,The Chinese Academy of Sciences,Guangzhou 510301,China |
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| Abstract: | Based on COADS & OISST data, the interannual variability of sea surface tempera-
ture anomaly (SSTA ) in the South China Sea (SCS) is studied combined with ENSO events,
and the contribution of Ekman pumping to the variability is further discussed. The results
show that the SSTA in the SCS correlates well with Nino 3 SSTA, with a lag time of 5
months. And three typical periods of 42. 7 months, 25. 6 months and 36. 6 months are recog-
nized according to the variance contribution. The three modes can approximately describe the
interannual variability of SSTA in the SCS, which proves that the regional response does exist
in the SCS in the large-scale ENSO background. Krause- Turner upper mixed layer dynamic e-
quation is applied to study the anomalous warm events in the SCS. Ekman pumping is proved
to be another important element influencing the interannual variability of SSTA in the SCS be-
sides the meridional wind stress known before, and even to be a dominatant element in some
years. This is a good supplement to the current study about the interannual variability of SS-
TA in the SCS. |
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| Keywords: | South China Sea (SCS) sea surface temperature anomaly (SSTA) interannual variability Ekman pumping |
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