Data of WFD calculated recent 50a is analyzed by means of EOF and Morlet technique in order to find distribution of space-time and Variation of multiple time scale on WFD.

• 对计算出的近50年晚霜冻害资料进行EOF分析和Morlet分析,以发现晚霜冻害的时空分布与多时间尺度变化规律。