泰安市近50年(1971~2020)冬季气候变化特征分析

Analysis on the Characteristics of Winter Climate Change in Tai’an City in Recent 50 Years (1971-2020)

摘要: 本文利用泰安市1971~2020年的冬季历史实况资料，从日平均气温、最高气温、最低气温、降水量、积雪深度和日照时数几个方面进行分析。结果表明：泰安市近50年来平均气温在波动中逐渐升高；最高和最低气温无明显年代际变化规律；降水量近15年来比较平稳，之前35年波动较大；最大积雪深度减小趋势明显；日照时数在波动中略有下降。

Abstract: This paper analyzes the daily average temperature, maximum temperature, minimum temperature, precipitation, snow depth and sunshine hours in Tai’an City from 1971 to 2020. The results show that the average temperature in Tai’an has gradually increased in the past 50 years; the maximum and minimum temperatures have no obvious interdecadal changes; the precipitation has been relatively stable in the past 15 years, and the fluctuation has been large in the previous 35 years; the trend of decreasing maximum snow depth is obvious; the sunshine hours decreased slightly in the fluctuation.