近百年东亚冬季风与ENSO循环的相互关系及其年代际异常

运用相关及滑动相关的计算技术，讨论了近百年东亚冬季风与ENSO循环的相互关系及其年代际异常。研究指出，东亚冬季风与赤道东太平洋海温的年际关系具有年代际的变化特征；季风与ENSO循环的关系受到季风的QBO以及季风-海洋的年代际背景场配置关系的共同作用；当季风与海洋的背景场处于同样状态时，强冬季风有利于第二年冬季赤道东太平洋的升温，产生El Ni?o事件；当两者的背景场处于反位相状态时，强冬季风对应于第二年冬季的La Ni?a位相。

The Interaction of East Asian Winter Monsoon with ENSO Cycle and Their Interdecadal Variations in Last Century

Based on the method of coherence and moving coherence analysis, the interaction of East Asian monsoon with ENSO cycle and their interdecadal variations in last century are investigated. The results show several points: a) the relationship of East Asian monsoon and the east equatorial Pacific SST on the interannual time scale presents the interdecadal variations; b) the interaction of monsoon with ENSO cycle is under the influence of QBO in monsoon and under the control of the phase relation of monsoon to SST on the interdecadal time scale; c) when the interdecadal variation of East Aisan monsoon is in phase with that of the east equatorial Pacific SST, strong winter East Aisan monsoon is beneficial to the temperature increasing of the east equatorial Pacific in the next winter and leads to the El Nio event, and when the two air-sea systems are out of phase, the strong winter monsoon is corresponding to the La Nia in the next winter.