小波分析在农业气象灾害周期分析中的应用

Wavelet analysis of Agro-meteorological Disasters in the Application

利用小波变换时域局部性的特点,对南宁市1951—2006年的春季低温、寒露风、霜冻期、安全生育期的发生时间及天数的时间序列资料及1955-2006年历年最低气温的发生时间的时间序列资料进行了小波分析。研究了南宁市在不同时间尺度上的气象变化状况,指出以上气象变化的阶段性、周期性和突变性等特征,揭示了长期的气象资源信息变化规律。

By using wavelet transform domain localized characteristics of Nanning City in the 1951 -2006 Spring hypothermia,cold dew wind,frost,safe growth occurred in a few days time and time aeries data; 1955 -2006 calendar year minimum temperature of the occurrence of the time series data for the wavelet analysis. Of Nanning City in different time scale changes in the weather, that these short - term weather changes, and the cyclical nature of mutations, revealed the long - term meteorological changes of information resources.