环流异常相似性演变的动力学机制

本文首先利用多年观测资料对月平均环流异常的相似性演变进行了分析。结果表明,环流异常演变过程中普遍存在着半年左右的相似韵律现象。进一步从理论上研究了相似韵律现象产生的动力学机制。最后用一个海气耦合模式进行了数值模拟和各种敏感性实验,结果不仅证实了理论分析的结果,也为进一步建立一个相似一动力模式提供了理论依据。

The Dynamical Mechanism of Analogous Evolution for Circulation Anomaly

In this paper, the analogous evolution of monthly mean circulation anomaly have been analysed by using observation data set for many years. The results show that there is an analogous rhythm phenomenon about six month in the evolution of circulation anomaly. Then, the dynamical forming mechanism of analogous rhythm is studied from theory. Finally, the numerical simulations and sensitivity studies are conducted by using a coupled ocean-atmosphere model, the results not only prove the result of theoretical analysis, but also provide the basis of making analogy-dynamical model.