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主要讨论了与西太平洋暖池热力状况年际变化相联系的１０－２５天季内振荡的特征。在西太平洋暖池处于“暖”夏季和“冷”夏季两种状态时．１０－２５天季内振荡呈现出明显差异，在所讨论的亚洲－太平洋大部分区域，“暖”夏季时对流活动的１０－２５天季内变化和“冷”夏季时对流活动的１０－２５天季内变化表现出显著的反相关关系，表明对流活动的年际变化与季内变化的相互作用。当西太平洋暖池上空对流活动的 １０－２５天季内振荡处于最强和最弱阶段时，低层大气表现为Ｇｉｌｌ型环流响应，即气旋式（反气旋式）环流出现在最强（最弱）对流活动的西北，这种对流和环流关系在西太平洋暖池出于“暖”夏季和“冷”夏季两种状态时均成立。而当西太平洋暖池上空对流活动的 １０－２５天季内振荡处于除此以外其他阶段时，就看不到Ｇｉｌｌ型环流响应。
This paper mainly discusses the characteristics of intraseasonal oscillations of 10-25 days which are related to the interannual variation of thermal conditions in the western Pacific warm pool. In the West Pacific warm pool in the “warm” summer and “cold” summer when the two states. Within 10-25 days, the intraseasonal oscillations show a significant difference. Within the most part of the Asia-Pacific region under discussion, the 10-25 days of “warm” summer convective activity and the “cold” summer convective activity of 10-25 The intraseasonal variation showed a significant inverse correlation, indicating the interaction between the interannual and the intraseasonal changes of convective activities. When the 10-25-day intraseasonal oscillations of the convective activities over the western Pacific warm pool are in the strongest and weakest stages, the lower atmosphere shows a Gill-type circulation response, ie the cyclone (anticyclone) circulation appears at the strongest ) Convective activities in the northwest, this convection and circulation relations in the western Pacific warm pool out of “warm” summer and “cold” in summer when the two states are established. However, the Gill-type circulation response can not be seen when the 10-25-day intraseasonal oscillations of the convective activity over the western Pacific warm pool are in other phases.