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本文着重分析北太平洋海面温度(以下简称海温)的功率谱和相关场特征.结果表明,在赤道东太平洋上,海温的演变表现出显著和一致的准3.5年振荡特点.这一特征振荡还能影响到其他海域的海温变化,并在北太平洋中部和西北太平洋地区激发出一些明显的遥相关现象,从而把热带太平洋上的埃尔尼诺现象与中、高纬度的海洋环流过程紧密联系起来.最后,文章还对各关键海域上的海温异常及其遥相关的可能机制作了深入探讨.
This paper focuses on the analysis of the power spectra and related field characteristics of the sea surface temperature in the North Pacific (hereinafter referred to as SST). The results show that the evolution of SST in the eastern equatorial Pacific shows significant and consistent quasi-3.5-year oscillation characteristics. But also affect the variation of SST in other sea areas and stimulate some obvious teleconnections in the central North Pacific and the western North Pacific to bring the El Niño over the tropical Pacific Ocean close to the mid- and high-latitude ocean circulation Finally, the paper also discussed in depth the possible anomalies of SST anomalies and their teleconnections on all key sea areas.