近46年柴达木盆地气候变化的多时间尺度分析

Multi-Time Scale Analysis of Climate Variation in Qaidam Basin in Recent 46 Years

利用Morlet小波变换对柴达木盆地46年来气候变化的多时间尺度特征进行分析。结果表明,柴达木盆地的年降水量存在5、8、20和28年的主周期;年均气温存在5、13、19和32年的主周期。未来柴达木盆地降水可能会增加,气温可能会升高,即气候会朝着暖湿化的方向发展。

Morlet wavelet transformation was used to analyze the Multi-time scale characteristic of climate variation in Qaidam basin in the recent 46 years. The results showed that： the annual precipitation in Qaidam basin had the main periods of 5 years, 8 years, 20 years and 28 years; the annual average temperature had the main periods of 5 years, 13 years, 19 years and 32 years. The precipitation in Qaidarn basin may increase, and the temperature may rise in the future, namely the climate change may move towards the direction of warm and wet.