本溪地区50年气温变化特征

Analysis of Air Temperature Variation in Benxi over Past 50 Years

应用本溪地区1953-2005年气温序列资料，对其基本气候特征、年代际变化、周期变化、冷暖阶段、变化趋势等进行了分析。结果表明：年平均气温与各季气温分布规律非一致性变化；年平均气温最冷出现在20世纪50年代，而生长季最低气温出现在70年代，春季最冷与年平均气温是一致的，夏季和秋季最冷出现在70年代，冬季最冷则出现在60年代。年均气温上升来源于冬季，春季和秋季平均气温增温幅度增大，近15年各季出现负增温现象，但气温变化总体是趋于上升的。

The temperature sequence data from 1953 to 2005 of Benxi are used to analyze the basic climatic characteristics, interannual variation, period variation, cold-warm variation, variation trend, etc. The results indicate that the annual mean temperature distribution was not consistent with seasonal distributions. The annual mean air temperature was the lowest in the 1950s, but the lowest growing-season temperature was in the 1970s. The lowest temperature in spring was consistent with the annual mean air temperature. The lowest temperatures in summer and in autumn were found in the 1970s, and that in winter was in the 1960s. The total temperature tended to go up gradually.