山西省太原市1951-2008年气候变化态势分析

利用太原气象观测站1951-2008年的气温和降水资料,采用数理统计分析方法对太原市近58年的气候变化的特征和规律进行分析。结果表明:58年来太原市年平均气温呈现非连续性上升趋势,线性倾向值为0.34℃/10年,各季的变暖趋势相同,但增幅依次为冬季、春季、秋季、夏季。58年来降水总体为波动中明显减少的趋势。各季降水量也呈减少的趋势。综合气温与降水变化状况,太原市气候呈现暖干化的趋势。太原市降水和气温的年代分布具有明显的阶段性,显示气候变化具有阶段性、季节差异性特征。

The climate change tendency in Taiyuan,Shanxi from 1951 to 2008

With the help of mathematical methods,statistical analysis,we analyzed the temperature and precipitation data recorded by Taiyuan Meteorological Station.The results showed that in the past 58 years,the annual temperature in Taiyuan presented non-continual increase,its rate was 0.0295℃ per year.The seasonal temperature increase tendency was the same,but the ratio was winter > spring > autumn > summer.The annual precipitation showed an obvious reduced tendency with fluctuation in the past 58 years.It was also the same with the seasonal precipitation.Putting temperature and precipitation changes together,we can see a warming-drying changing pattern in Taiyuan climate.The yearly distribution of temperature and precipitation in Taiyuan revealed that the climatic change in this city had the character of phase and with seasonal differences.