哈尔滨等几个城市气候变化的对比分析

应用距平分析和Morlet小波变换方法对哈尔滨、石家庄、武汉、广州等4个城市1951—2004年的年均气温和夏季降水进行了对比分析，结果发现，这4个城市：（1）近50多a来气温基本上都是呈逐渐升温趋势，升温幅度都在1℃以上，其中哈尔滨的气温年变化比其他3个城市剧烈；（2）气温年代际演变特征非常明显，存在10～25a尺度的变化，在20世纪80年代前期发生气候突变；（3）近50多a夏季降水变化趋势不太一致，在空间分布上表现为波列特征；（4）夏季降水年代际变化特征非常明显，都存在10a左右尺度变化；（5）降水变化趋势与气温变化趋势不一致。

A comparative analysis of climate change for some cities including Harbin

Based on method of anomaly and Morlet wavelet trasform,comparative analysis of annual air temperature and summer rainfall in four cities: Harbin,Shijiazhuang,Wuhan and Guangzhou from 1951 through 2004 was conducted; The results show that air temperature is uprising gradually in the past fifty years in the four cities,interdecadal variation of the air temperature is obviously;the summer rainfall also has interdecadal variation,but they have different trend with air temperature;the spatial distribution of summer rainfall in four cities appear as a queue of wave.