主要通过滑动t-检验方法和相关统计,分析了近50年来南亚季风、东亚季风以及高原季风的相互关系,并对其与太阳黑子周期长度(SCL)和地球自转速度(Δω)的关系进行了讨论。结果表明:三种亚洲季风虽然在年际变化上相关不好,但在年代际变化上具有很好的一致性;亚洲季风的年代际变化与SCL和Δω均相关很好,其中以与Δω关系最好,且Δω的变化超前亚洲季风的变化。对日地因子的短期变化如何影响亚洲季风年代际振荡提出了初步看法。

On the basis of the moving t-test method and correlation analysis,the relation among summer monsoon in South Asia,East Asia and Tibet and their relationship with astronomical factors (sunspot cycle length and earth rotation velocity) were analyzed.The results show that the three kinds of Asian summer monsoons have close relation at interdecadal scale,though they have no appreciable relation at interannual time scale.Moreover,the interdecadal fluctuations of Asian summer monsoon have good relation with the astronomical factors,especially the earth rotation velocity. The physical link between astronomical factors and Asian summer monsoon were discussed.