石家庄降水量和气温变化特征分析

利用石家庄1955--2001年的降水和气温资料，对石家庄近47a的气候变化及特征进行分析、趋势分析结果显示：年气温呈上升趋势，其中最低气温与冬季气温的上升趋势比较明显；年降水趋势倾向不明显。利用墨西哥帽小波对四季、年的降水距平和温度距平进行小波变换，结果显示：四季、年的降水、温度距平呈现出不同的周期变化；夏季降水距平的信号震荡特征与年降水距平的信号震荡特征比较相似，冬季温度距平正中心强度为四季之首：

Characteristics of Precipitation and Temperature Variations in Shijiazhuang

The climatic variations and characteristics of Shijiazhuang in recent 47 years were analyzed on the basis of the precipitation and temperature data from 1955 to 2001 in Shijiazhuang. The results demonstrate that the annual temperature shows an increasing trend, especially the minimum temperature and the winter temperature. The annual precipitation does not have an obvious tendency. By using the Mexican Hat wavelet transform analysis on the seasonal precipitation anomaly, the anual precipitation and temperature anomaly, the results show that: the seasonal precipitation anomaly, the annual precipitation and temperature anomaly display the different periodic variations. The summer precipitation anomaly is similar with the annual precipitation anomaly in the characteristics of periodical vibration, the central intensity of winter temperature anomaly is the head of the four seasons.