The East Asian summer and winter monsoon intensity indices are constructed by using the SLP data for the period of 1873~1996/1997 and their interannual and inter decadal variabilities are analyzed.
用1873～1996／1997年资料，延长计算了东亚冬夏季风强度指数，研究了指数的年际及年代际变化的主要特征。
The results are outlined as following, 1 Anomaly fields have their larger inter-decadal component percentage but smaller inter-annual one in both climate and sea thermal elements.
结果表明：1年代际变化在海洋要素和气候要素异常的构成中均是显著的，而这些要素对应的年际变化冬夏均不显著。
The main results show as following: (1) There is obvious inter-annual and inter-decadal variation for polar vortex, including the variation of area, intensity and location.
主要结论如下：(1)北半球及各分区极涡的面积、强度及位置有着很明显的年际及年代际变化。
The main results show as following: (1) There is obvious inter-annual and inter-decadal variation for polar vortex, including the variation of area, intensity and location.
主要结论如下：(1)北半球及各分区极涡的面积、强度及位置有着很明显的年际及年代际变化。
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