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北太平洋副热带环流的经向输送与Sverdrup输送关系研究 被引量:1

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摘要 基于再分析资料,比较了应用流速资料直接计算的和基于Sverdrup关系应用风应力资料估算的北太平洋副热带环流的经向体积输送的差异.结果表明在海洋内区气候平均状态下,Sverdrup输运与实际的北太平洋副热带环流的经向体积输送相差甚小.对于北太平洋副热带环流的经向体积输送的10年际变化特征,由于海洋环流对风应力变化的响应只有当第一模态斜压Rossby波到达西边界后才能完成,所以当应用该延迟时间修正了Sverdrup输运函数后,修正后的Sverdrup输运与实际的经向输送的十年际变化趋势就有了很好的相关性,特别是在西边界附近.结果表明Sverdrup平衡不仅在气候平均意义下是副热带内区环流很好的近似,而且当考虑了第一斜压模态Rossby波的传播时间后,Sverdrup平衡也可以很好地估计海洋环流随时间变化的特征.
出处 《科学通报》 EI CAS CSCD 北大核心 2006年第2期200-203,共4页 Chinese Science Bulletin
基金 国家自然科学基金项目(批准号:40406004,40490263,40306002)资助.
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同被引文献111

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