辽宁省彰武县1953-2010年气候变化特征分析

利用趋势分析、滑动平均和Mann-Kendall检验等统计方法对彰武县1953-2010年历年日平均气温、平均最低(高)气温、降水量、日照时数、风速等资料进行分析,结果显示:(1)58年来年及四季平均气温均呈上升趋势,尤以春季增温最明显;不同年代际中2000年代是最暖的时期。(2)月平均最高气温无变化,而月平均最低气温上升较明显。(3)年及夏、秋、冬季降水量呈减少趋势,而春季呈增加趋势;不同年代际中2000年代是降水量最少的10年。(4)年及四季日照时数呈减少(增大)趋势,而年平均风速呈增大趋势。气候变化对当地生态环境的改善、农业经济发展以及风能资源的利用都有影响,应引起我们的重视。

Characteristics of climate change in Zhangwu County,Liaoning from 1953 to 2010

Daily average temperature,average minimum and maximum temperature,precipitation,sunshine duration,wind speed in Zhangwu Country from 1953 to 2010 were analyzed with the trend analysis,moving average and Mann-Kendall test methods.The results are as follows: Firstly,the annual and the seasonal temperature were rising in recent 58 years,especially the trend of temperature increase was the most remarkable in spring;The 2000s was the warmest period among different decadaes.Secondly,there was no change in the monthly maximum temperature,whereas monthly minimum temperature was rising.Thirdly,annual precipitation was decreasing,and so did the precipitation in summer,autumn and winter.But precipitation in spring was increasing.The precipitation in the 2000s was the smallest among different decades.Finally,the annual and the seasonal sunshine duration(wind speed) were decreasing(increasing).The climatic ahange has very important significance to improve our locally environment,development of agriculture.