| 2004年秋季冷空气活动对南海海表温度的影响 |
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| 引用本文： | 李超,张燕,王东晓.2004年秋季冷空气活动对南海海表温度的影响[J].热带海洋学报,2006,25(2):6-11. |
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| 作者姓名： | 李超 张燕 王东晓 |
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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： | 广东省博士启动基金;中国科学院方向性项目 |
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| 摘 要： | 利用航次观测和网上的有关资料对南海2次强度不同的冷空气活动及其对南海SST的影响进行了分析.结果显示,9月22日弱冷空气过程南下速度慢,在陆地上变性较明显,未造成南海SST的明显变化;而10月2日前后的强冷空气过程南下速度快,陆地上变性比较弱,造成南海SST明显下降.通过对南海海表热收支分析,发现南海北部SST下降主要是冷空气造成净热通量急剧增加,海洋失去热量,而南部SST下降可能是南部海面气旋式风应力引起的下层冷水上涌.初步解释了2004年秋季冷空气活动对南海SST的影响.
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| 关 键 词： | 冷空气活动 南海SST 海面热通量 Ekman抽吸 |
| 文章编号： | 1009-5470（2006）02-0006-06 |
| 收稿时间： | 2005-02-26 |
| 修稿时间： | 2005-02-262005-11-10 |
Impact of cold surges on sea surface temperature in South China Sea in autumn of 2004 |
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| LI Chao,ZHANG Yan,WANG Dong-xiao.Impact of cold surges on sea surface temperature in South China Sea in autumn of 2004[J].Journal of Tropical Oceanography,2006,25(2):6-11. |
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| Authors: | LI Chao ZHANG Yan WANG Dong-xiao |
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| Institution: | LED, South China Sea Institute of Oceanology, The Chinese Academy of Sciences, Guangzhou 510301, China |
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| Abstract: | Using in situ R/V data,weather charts,TMI-AMSRE satellite remote sensing data and NCEP/NCAR reanalysis data,two cold surges during the period from September 16 to October 4,2004,and their influences on SST in the South China Sea were studied.The results showed that the weak cold surge propagated slowly southward,and its transformation over land was prominent,the response of SST in the South China Sea was not evident;while the subsequent strong cold surge moved rapidly,and its transformation over land was weak,so the SST's response was remarkable.According to sea surface heat budget analysis,the decrease of SST in the northern South China Sea is mainly due to net heat flux,and that in the southern South China Sea is mainly caused by the sub-surface cold water entrainment induced by cyclonic wind stress curls. |
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| Keywords: | cold surge SST net heat budget Ekman pumping |
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