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中文摘要: 利用上海地区1900～1999年月降水资料,用Marr波及Morlet小波变换方法分析了上海地区100年来冬、夏季降水时间-频率的多层次时间尺度演变特征及其突变特征。结果表明,其年际及年代际时间尺度的周期变化在时间域中分布很不均匀,具有很强的局部化特征。这些特征可为上海地区短期气候预测服务提供十分重要的参考依据。
中文关键词: Marr小波，Morlet小波，多时间尺度，降水
Abstract:Using Marr wavelet and Morlet wavelet transforms,the variations of winter and summer precipitation in Shanghai during one hundred years were analysed.Some multi-time-scale and jump features of the variations were discoverd.These features are very important in short range climate forecast for Shanghai.The multi-time-scale pattern and the background of Shanghai winter and summer precipitation were given.
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引用文本：
姚建群,2001.连续小波变换在上海近100年降水分析中的应用[J].气象,27(2):20-24.
,2001.An Application of Continuous Wavelet Transforms to Precipitation Analysis in Shanghai during One Hundred Years[J].Meteor Mon,27(2):20-24.
姚建群,2001.连续小波变换在上海近100年降水分析中的应用[J].气象,27(2):20-24.
,2001.An Application of Continuous Wavelet Transforms to Precipitation Analysis in Shanghai during One Hundred Years[J].Meteor Mon,27(2):20-24.