摘要
该文运用滑动平均法、累积距平法、Morlet小波分析法和Yamamoto方法,分析了锡林浩特市1953—2009年平均最高气温和平均最低气温的变化特征。结果表明:平均最高、最低气温线性倾向率分别是3.47℃/10a,6.26℃/10a,存在明显的非对称变化;年较差呈弱减小趋势,其中平均最低气温的贡献最大;90年代变暖程度明显;在57a尺度上,平均最高气温主要存在50a和30a左右的震荡周期,平均最低气温主要存在50a,30a和18a左右的震荡周期;平均最高气温的阶段性和突变性均不明显,平均最低气温存在3个较为明显的变化阶段,且1987年出现突变。
This paper used the moving average method, accumulated variance method, Morlet wavelet analy- sis, and Yamamoto method to analyze the mean maximum temperature and mean minimum temperature of Xilinhot from 1953 to 2009. The results are as following： the linear trend rates of mean maximum tempera- ture and mean minimum temperature are 3.47℃/10 a and 6.26℃/10 a, existing a symmetric change clearly; annual range is weak decreasing trend and mean minimum temperature contributes most; The warming is be- coming clear in 1990s; at the 57-year scales, the mean maximum temperature mainly exists 50 a and 30 a fluctuation, the mean minimum temperature mainly exists 50 a, 30 a and 18 a fluctuation; stage and mutage- nicity both are not clear in the mean maximum temperature, but there are 3 stages and 1987 is the mutation year in terms of the mean minimum temperature.
出处
《水土保持研究》
CSCD
北大核心
2013年第5期257-260,265,共5页
Research of Soil and Water Conservation
基金
"十二五"科技支撑计划项目资助(2013DAK05B01)
关键词
变化特征分析
平均最高气温
平均最低气温
锡林浩特市
variation characteristic analysis
mean maximum temperature
mean minimum temperature
Xilinhot City
