摘要
运用奇异谱分析方法对郑州市1951 2006年的年降水资料进行分析,结果表明:郑州市近56 a来的年降水趋势变化不太显著,主要以波动变化为主,存在9、7、5、3 a的振荡周期,各振荡周期存在年代际变化,不同阶段各周期强弱表现不同。
Using the singular spectrum analysis method, the annual rainfall data from 1951 to 2006 in Zhengzhou is analyzed. The results show the variable tendency of the annual rainfall is not obviously;main wave oscillation periods are 9, 7, 5 and 3 a. There is inter-decadal change among the oscillation periods and each period strong or weak shows dissimilarity.
出处
《气象与环境科学》
2007年第4期54-56,共3页
Meteorological and Environmental Sciences
关键词
年降水
奇异谱
变化周期
annual rainfall
singular spectrum
change period
