三峡库区气温变化与西太平洋副高的相关研究

根据1961-2009年三峡库区32个气象站的逐日气温资料以及同期西太平洋副副热高压脊线指数资料,采用功率谱等常规统计方法和小波变换方法,分析了近49年来三峡库区的气温变化及其与西太平洋副高脊线指数之间的相关关系.结果表明,三峡库区气温变化具有不同时间尺度的多层次演变特征,存在2～4,8和16a左右的周期振荡.三峡库区气温变化与西太平洋副高脊线指数存在着不同尺度的共振周期,两者在6～7和16～26a尺度周期上表现为负相关;8～15和27a以上尺度周期上表现为正相关关系.

Correlation Research Between Western Pacific Subtropical High and Temperature Variations in the Three Gorges Reservoir Region

According to the day-to-day temperature data of 32 weather stations in the Three Gorges Reservoir Region from 1961 to 2009 and the records of western Pacific subtropical high ridge index,an analysis was conducted of the correlations between temperature variation in the Three Gorges Reservoir Region and the western Pacific sub-tropic high ridge index in the 49 years with the routine statistical method,power spectrum,wavelet power spectrum and wavelet transform.The results showed that temperature variation in...