【摘要】 本文利用青岛站１９００～１９９７年各年度和各月降水资料，分析了各年代的年度和４季平均距平百分率等变化特征。同时，利用周期图展开方法，探讨了青岛市近百年来和未来二十几年的年度降水变化规律。更多还原

【Abstract】 By using annual and monthly mean data on precipitation from 1900 to 1997 in Qingdao station, the authors analysed the variation characteristics of annual average anomaly percentage and seasonal average anomaly percentage of each 10 years, and made use of periodogram method to study the variation rule of precipitation during the period of nearly 100 years and the next twenty odd years in Qingdao region.更多还原