新疆叶尔羌河流域温度与降水序列的小波分析

 利用1961—2006年叶尔羌河流域7个气象站点的气温和降水系列资料，采用Morlet小波函数，分析了不同时间尺度下气温和降水序列变化的周期和突变点，确定了各序列中存在的主周期。结果表明：该流域暖湿化趋势比较明显，气温和降水的变化趋势与西北地区和新疆区的气候变化基本一致；小尺度的变化嵌套在较大尺度的复杂背景之中，不同时间尺度下突变的年份有所差异。

Wavelet Analysis of Temperature and Precipitation Variation in the Yarkant River Basin,Xinjiang

The annual mean temperature and annual precipitation data from 1961 to 2006 of seven meteorological stations in the Yarkant River Basin, Xinjiang, were used to analyze the characteristics of climate change of this region by method of Morlet wavelet analysis. The periodic oscillation of annual precipitation and temperature variations and their abruptly changing points at different time scales are discovered and the predominant periods of every series are confirmed. The results showed that there is obvious climate warming and wetting tendency in this basin, being consistent with that in Xinjiang and in the Northwest China; smaller-scale changes are based on greater complex background; the abruptly changing points of the annual mean temperature and annual precipitation series at different time scales are in different years.