摘要
以山东省 5个代表站 1 470～ 2 0 0 0年的旱涝指数资料为基础 ,采用滑动平均、累积距平、小波分析等多种气候诊断方法 ,分析了山东省近 5 31年旱涝变化的时空分布特征和变化趋势 ,并划分了差异显著的旱涝气候阶段 ,进一步揭示出旱涝变化的多时间尺度周期特征。
Based on drought/flood index data at 5 stations from 1470 to 2000,spatial/temporal features and variance tendency of drought/flood variance in Shandong province are analyzed by means of slip average,accumulative anomaly,wavelet method and other statistical techniques.Drought/flood stages of significant difference are divived.In addition,the results show that drought/flood variance is of multi-time scale period.
出处
《山东气象》
2003年第4期5-9,共5页
Journal of Shandong Meteorology
基金
山东省气象局 2 0 0 2年重点攻关项目"山东气候异常与中高纬度环流变化关系的研究"
关键词
旱涝
气候诊断
周期
小波分析
气候变化
drought/flood variance
climate phase
period
wavelet method
