近幾十年來，全球平均溫度逐年增高，改變了整個大氣環流的正常機制，造成全球氣候災害頻傳，而台灣各季節的降雨量亦深受全球氣候變遷的影響。在各季節降雨週期方面，台灣各季節降雨量最主要的週期爲2~4年，且大部份各測站各季節降雨量此週期的顯著性達到95%。次要週期是5~8年、接著是9~12年的週期。在與自然週期相關性方面，只有台北秋季和恆春梅雨季降雨量與QBO週期呈現中度正相關，恆春颱風季降雨量與QBO週期呈現中度負相關。
The global average temperature has been increasing for the past century. It leads to the world climatic change. This study shows that the precipitation of Taiwan is probably affected by this world climatic change. The main periodicity of precipitation is 2~4 year with 95% significance is found for each season in most areas of Taiwan. Secondly, the 5~8 year and 9~12 year periodicities are also found in most areas of Taiwan. The precipitation in Taipei in fall and in Hengchun in Meiyu season has moderately positive correlation with QBO periodicity. However, the relation between the precipitation in Hengchun in typhoon season and QBO periodicity is moderately negative.
