The strong or weak winter monsoon and ENSO cycle are linked each other. It can be suggested that interaction between anomalous East Asian winter monsoon and ENSO cycle is a fundamental origin of the TBO.

• 强或弱的冬季风和ENSO循环是相互衔接在一起的，因此可以认为异常东亚冬季风与ENSO循环的相互作用是TBO对流层准两年振荡）的基本原因。