摘要
统计分析了1961～2007年鲁西南连阴雨资料。结果表明,鲁西南连阴雨自北向南逐渐增加;夏季连阴雨过程最多,秋季次之,冬季最少。用小波分析方法对鲁西南年、季连阴雨序列进行周期分解,结果表明,在2年时间尺度中,存在准5年周期的振荡;在10年时间尺度中,存在准20年周期的振荡;1986年是一个连阴雨多寡转换的突变年。2001～2020年鲁西南连阴雨处于偏多,但逐渐减少的周期内。
The continuous rain data during 1961-2007 in southwest of Shandong was analyzed,the results showed that continuous rain increases from north to south. Continuous rain processes in summer are the most,in autumn are the next,and in winter are the least. Using wavelet to analyze the sequence of season and annual continuous rain,at 2Y （year） level,it has a 5 years cycle oscillation; at 10Y level,it has a 20 years cycle oscillation. An abrupt climate change of continuous rain took place in 1986. Continuous rain is in a more period and will decrease during 2001-2020.
出处
《安徽农业科学》
CAS
北大核心
2010年第30期17152-17154,共3页
Journal of Anhui Agricultural Sciences
关键词
鲁西南
连阴雨
小波分析
突变
Southwest of Shandong
Continuous rain
Wavelet analysis
Abrupt climate change
