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两极海冰和热带海洋SST的异常变化对全球气候监测和预报都是极为重要的指标。本文使用了南极、北极海冰月平均距平资料和ENSO事件五要素,即SOI和4个Nino海区的SST月平均距平值,计算了各区海冰之间以及与ENSO事件的逐月移动交叉相关时间序列,分析其变化特征,寻找两个波发生相互作用最强的时期。(1)发现北极海冰在两极海冰相互作用过程中起主导作用。北极海冰异常影响到后期南极海冰的异常变化。(2)赤道中太平洋的海温(SST)与南极威德尔海区的海冰(SPI3)和罗斯海区的海冰(SPI2)有强的相互作用,并且具有明显的周期性变化。SST与SPI3的周期是5~6a,与SPI2的周期是准11a,这些周期变化尺度与它们自身变化的周期有关。当两者周期相近时,在位相差一定的时期发生共振,产生强烈的相互作用最佳时期。
Abnormal changes in polar sea ice and tropical ocean SSTs are extremely important indicators for global climate monitoring and prediction. In this paper, the monthly average anomalies of Antarctic sea ice and the five elements of the ENSO event are used, that is, the average SST anomalies of the SOI and the four Nino sea areas. The monthly cross-sea movement between sea ice and ENSO events is calculated Related time series, analyze its changing features and look for the period when the two waves have the strongest interaction. (1) Arctic sea ice is found to play a dominant role in the interaction between polar ice and sea ice. The Arctic sea ice anomalies affect the anomalous changes of Antarctic sea ice in the later period. (2) SST in the central equatorial Pacific strongly interacts with sea ice (SPI3) in Weddell Sea area and sea ice (SPI2) in Ross Sea area with obvious periodic changes. The period of SST and SPI3 is 5-6 a, and the period of SPI2 is quasi-11a. The scale of these period changes is related to the period of their own change. When the two periods are similar, resonance occurs at a certain phase difference, resulting in a strong period of intense interaction.