【摘要】 本文根据1871—1970年全球一月、七月海平面的月平均气压,讨论了全球各大气活动中心长期变化的阶段性,同时还讨论了阶段性与太阳黑子数的关系及阶段性在统计学上的意义.我们得到以下几个主要结果: 1.大气活动中心的长期变化存在着阶段,这种阶段一般持续为40—60年. 2.本世纪30年代许多大气活动中心发生了较明显的阶段转折. 3.大气活动中心及气候要素的阶段转折与太阳黑子数的变化有一定的关系.更多还原

【Abstract】 Based on the global monthly-mean sea-level pressure data of January and July during the years 1871-1970, the characteristies of long-range variations in the atmospheric centres of action have been examined. The relationship between the stages of variation and the sunspot number, and the influence of the stage’s characteristics on statistical forecast have been discussed.The results we have obtained are as follow:1. The characteristics of long-range variations in the global atmospheric centres of action vary obviously with stages and these stage’s characteristics normally persist for 40-60 years.2. In the 1930s a number of atmospheric centres of action underwent a remarkable stage-turning.3. The stage-turning of the atmospheric centres of action and the climatic elements in a certain degree are related to the change of sunspot number.更多还原