arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1109.3633physics.ao-ph
收藏

气候网络结构遵循北大西洋涛动阶段

Climate Network Structure Follows North Atlantic Oscillation Phases

O. Guez, A. Gozolchiani, K. Yamasaki, Y. Berezin, S. Brenner, S. Havlin

摘要:

我们从北大西洋不同地理位置的气候记录中构建了一个网络。两个站点之间的链接表示每个站点的记录之间的互相关。我们发现,在北大西洋涛动(NAO)的不同阶段的相关值显着不同的链接。通过对相关值设置一个优化阈值,我们发现网络中的强连接数在NAO指数为正时增加,在NAO指数为负时减少。我们发现一个显着的灵敏度的网络结构的振荡,这是显着高于所观察到的响应的空间平均的记录。我们的研究结果提出了一种新的措施,跟踪NAO模式。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑