Characteristics of Temperature and Precipitation Change in the Last 57 Years in Anshun City

Based on the observational data of monthly average temperature and precipitation at six county stations in Anshun, the characteristics of seasonal temperature and precipitation change were analyzed by using trend analysis, sliding average and wavelet analysis. Results show that in recent 57 years, the temperature in Anshun showed a significant upward trend in summer, fall and winter. Temperature change in summer had regional differences, while temperature in spring, fall and winter changed consistently across the regions. Precipitation was decreasing in spring, fall and winter. Precipitation decreased in the northwest of Anshun and the other regions showed a weak increase trend in summer. In addition, “Late Spring Coldness” showed obvious interdecadal change characteristics.