格尔木地区降水变化特征分析
Characteristic Analysis of Precipitation Variation in Golmud Area

为了分析格尔木地区的降水变化特征，本文采用格尔木气象站1960~2019年的数据资料，利用线性回归法和小波分析法对该地的降水量和年降水日数进行分析，结果表明：近60a该地降水处于缓慢上升的趋势，但并不显著。年降水日数呈现显著增加的趋势。年降水量表现出了三个明显的周期，分别为3~7a，13~16a，23~29a，能量峰值按强度分别为15a，27a，6a。年降水日数的变化表现出三个明显周期4~6a，7~10a，14~21a，能量峰值按强度分别为17a，8a，5a。
In order to analyze the characteristics of precipitation change in Golmud region, this paper used the data from the Golmud Meteorological Station from 1960 to 2019, and used the linear regression method and the wavelet analysis method to analyze precipitation and rainy days in this area. The results showed that in recent 60 years, the precipitation in this area had been rising slowly, but not significantly. The number of rainy days showed a significant increase trend. The precipitation showed three distinct cycles, 3~7a, 13~16a, and 23~29a, respectively. The energy peaks were 15a, 27a, and 6a according to the intensity. The variation of rainy days showed three distinct periods of 4~6a, 7~10a, 14~21a, and the energy peaks were 17a, 8a and 5a respectively according to the intensity.