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关于海气耦合模式气候漂移及敏感性的一点探讨

, PP. 38-51

Keywords: 海气耦合模式,气候漂移,通量修正

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Abstract:

本文从概念性的大气或海洋系统及海气耦合系统出发,通过简单的理论分析指出:用观测气候场作为边界条件来调试大气或海洋模式并非最佳选择;海气耦合漂移是由两部分组成的,其中一部分源于未耦合模式模拟得到的气候状态与观测气候状态之间的系统误差,而另一部分则源于海气系统的非线性相互作用;海面“通量修正”可以消除因模式气候与观测气候之间的系统误差而引起的那部分漂移,但仍保留了海气系统的大部分非线性相互作用项.本文最后利用中国科学院大气物理研究所发展的海气耦合模式进行了敏感性试验,指出耦合漂移受到模式海洋的垂真发辨的率、海洋温盐扩散方案、海气耦合强度等诸多因素的影响.

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