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| 南海表层水温场的时空特征与长期变化趋势 | |
| 引用本文： | 蔡榕硕,张启龙,齐庆华.南海表层水温场的时空特征与长期变化趋势[J].台湾海峡,2009,28(4):559-568. |
| 作者姓名： | 蔡榕硕 张启龙 齐庆华 |
| 作者单位： | 1. 中国科学院大气物理研究所季风系统研究中心,北京,100190;国家海洋局第三海洋研究所海洋-大气化学与全球变化重点实验室,福建,厦门,361005 2. 中国科学院海洋研究所,中国科学院海洋环流与波动重点实验室,山东,青岛,266071 3. 国家海洋局第三海洋研究所海洋-大气化学与全球变化重点实验室,福建,厦门,361005 |
| 基金项目： | 中国科学院知识创新工程领域"前沿项目"，国家重点基础研究发展计划资助项目，国家海洋专项资助项目，国家海洋局科研资助项目 |
| 摘 要： | 本文利用月平均表层水温（SST）、850hPa经向风和西太平洋副热带高压等资料分析了南海表层水温距平（SSTA）场的时空特征和长期变化趋势，并探讨了SST的年际和长期变化原因．结果表明，南海SSTA场分别存在着以全域同位相振荡和东南一西北向反位相振荡的两个主要模态．其中，前者是主要模态，以年际振荡为主，而后者则是次要模态，以季节振荡为主．进一步分析发现，南海中部的SST存在着显著的年际和年代际变化，并在1981年前后发生了一次由低到高的气候转变，而且南海中部SST的长期变化趋势非常明显，在1950—2006年间增温0．92℃．相关和合成分析表明，南海SST的年际和长期变化可能是由南海上空的经向风异常和西太平洋副热带高压的纬向变动引起的． |
| 关 键 词： | 物理海洋学 南海 表层水温 时空振荡 长期变化 ENSO |
Spatial and temporal oscillation and long-term variation in sea surface temperature field of the South China Sea |
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| CAI Rong-shuo,ZHANG Qi-long,QI Qing-hua.Spatial and temporal oscillation and long-term variation in sea surface temperature field of the South China Sea[J].Journal of Oceanography In Taiwan Strait,2009,28(4):559-568. | |
| Authors: | CAI Rong-shuo ZHANG Qi-long QI Qing-hua |
| Institution: | CAI Rong-shuo ,ZHANG Qi-long ,QI Qing-hua ( 1. Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Science, Beijing 100190, China; 2. Key Laboratory of Global Change and Marine-Atmospheric Chemistry,Third Institute of Oceanography, SOA,Xiamen 361005 ,China;3. Key Laboratory of Ocean Circulation and Waves ( KLOCAW), Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China) |
| Abstract: | Based on monthly mean sea surface temperature (SST),850hPa wind and subtropical high index over the western Pacific during 1950～2006,the spatial and temporal oscillation and long-term variation in SST field of the South China Sea(SCS) are analyzed by using empirical orthogonal function(EOF),polynomial function and spectrum analysis,and then the causes of SST interannual and long-term variation are discussed by using correlation and composite analysis.The results show that SST anomaly fields have two major patterns.SSTs over the South China Sea have spatially in-phase interannual variation and seasonal oscillation with out-of-phases between the west and east South China Sea.The SST in the central South China Sea exhibit significant interannual and interdecadal variations,and experienced a climate jump in 1981.The annual mean SST in the central South China Sea has increased by 0.92℃ from 1950 to 2006.It is also suggested that the interannual and long-term variations in SST of the South China Sea may be resulted from the meridional wind anomaly and zonal migration of the subtropical high over the western Pacific. |
| Keywords: | ENSO |
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