标题： 气候网络结构遵循大西洋北涛动相位 显示英文标题

标题： Climate Network Structure Follows North Atlantic Oscillation Phases

摘要： 我们从北大西洋不同地理地点的气候记录构建了一个网络。两个地点之间的链接表示每个地点记录之间的交叉相关性。我们发现，在北大西洋涛动（NAO）的不同相位中，链接的相关性值存在显著差异。通过在相关性值上设置一个优化阈值，我们发现正NAO指数时期网络中的强链接数量增加，负NAO指数时期则减少。我们发现网络结构对振荡表现出明显的敏感性，这种敏感性显著高于记录空间平均值的观测响应。我们的结果表明了一种新的跟踪NAO模式的方法。 显示英文摘要

摘要： We construct a network from climate records of different geographical sites in the North Atlantic. A link between two sites represents the cross-correlations between the records of each site. We find that within the different phases of the North Atlantic Oscillation (NAO) the correlation values of the links are significantly different. By setting an optimize threshold on the correlation values, we find that the number of strong links in the network is increased during times of positive NAO indices, and decreased during times of negative NAO indices. We find a pronounced sensitivity of the network structure to the oscillations which is significantly higher compared to the observed response of spatial average of the records. Our result suggests a new measure that tracks the NAO pattern.