利用中国气象中心160站点的实际观察资料,对中国半个世纪的气温变化进行了系统分析。通过M ann-Kendall趋势分析方法和相关分析法,对各个站点的数据进行处理,对各地的升温响应时间(升温突变时间)同纬度的关系进行了季节对比,发现气温变化趋势和幅度因季节变化存在区域差别:冬季升温范围大,夏季升温成零星状分布;冬季升温更为强烈,夏季升温幅度小,且纬度对各个季节增温幅度的影响也存在着很大的差异:温度越高,升温幅度越大,增温幅度有着非常明显的纬度效应;增温幅度在经度上的季节差异大体上以97°E为界,东西部差异明显。最后针对引起这些升温变化时空差异的可能机制进行了探讨。
The data set data in China had been of 160 National Meteorological Observatory stations with longterm monthly temperature analyzed in this study to discover the seasonal temperature response and the spatial tem- perature structure across China in the past half century. By comparing the distribution of warming up mutation times both in winter and summer, it was found that there are different regional wanning -up trends and extents between winter and summer: there are more areas with the greater warming - up extent in winter than in summer; the warming up extent in winter is influenced markedly by the latitude and that of summer is not obviously influenced by the latitude; and there is a longitudinal variation of seasonal warming - up extents in the two parts of China divided by about 97°E. At the end, possible mechanisms of the seasonal variations were discussed.