【摘要】 本文采用对江苏地区冬夏季逐日极端气温变化的振动模态 (分布型 )及其长期演变的时空特征进行气候统计诊断分析 ,得到一些有意义的结论。结果表明 ,我省夏季 6～ 7月 (梅雨前后 )由于副热带高压不断向北挺进的环流型及其汛期特点的影响 ,对应的逐日最高温度变化特征即有所反映 ,冬季同样也受其环流及天气特点的影响 ,所以 ,冬夏季逐日高低温波动型各有不同的特点。而所揭示的(以上海为例 )冬夏逐日气温振动模态的年际变率特征 ,也有一定的代表性。更多还原

【Abstract】 In this paper,the favourable conclusions are obtained by means of climatic statistical diagnosis which uses a cluster analysis of wave vector patterns for daily extreme low temperature during winter and daily extreme high temperature during summer in Jiangsu.The results show:(1) because of affect of the summer weather circulation pattern and features of rainfall on daily maximum high temperature during summer(6～7 monthly) in Jiangsu,the vibration patterns of the extreme temperatures have different characters during summer and winter in Jiangsu ;(2) the interannual variabilities of the wave vector patterns of the extreme temperatures during summer and winter have some different features ,for example,in Shanghai.更多还原