摘要
运用奇异谱分析方法对南宁近百年夏季降水进行了统计分析 ,结果表明 :南宁近百年夏季降水的趋势变化不显著 ,主要以波动变化为特征 ,主振荡周期分别为 4a、 8~ 10 a、准两年振荡及 2 0~ 30 a的长周期变化 ,各重建分量振幅、位相具有明显的年代际变化。
The statistic analysis of summer precipitation in the recent one hundred years in Nanning by using singular spectrum shows the results as follows:Its trend changing isn't obvious but characterized as wave motion. Its main oscillation periods are 4 years、8~10 years、quasi biennial and 20~30 years. Decadal change of amplitude and phase of reconstruction partial of main oscillation are obvious.
出处
《气象研究与应用》
2000年第z1期26-28,共3页
Journal of Meteorological Research and Application
基金
广西区科技厅"九五"攻关项目
国家"九五"重中之重科技项目!( 96-90 8-0 5 -0 7-2 )
关键词
夏季降水
奇异谱
周期振荡
precipitation in summer
singular spectrum
periodic oscillation