济南市1961～2000年夏季降水和气温变化趋势分析

Analysis on Summer Temperature and Precipitation Change Trend of Jinan betueen 1961 and 2000

气象资料分析发现,济南20世纪60、80年代夏季降水量明显下降,70、90年代夏季降水量略呈上升;夏季气温60年代末期到70年代呈下降变化趋势,80年代呈上升趋势,尤其90年代上升最为明显,这与全球气温不断上升吻合。对比看出,济南与山东夏季气温在60年代末的显著下降相一致,济南夏气温升高时间比山东省有所提前,但90年代的显著升温与山东省相一致的。

Based on the monthly summer average rainfall and temperature data from observatories in Jinan city from 1961 to 2000, some new features of the climate change in Jinan city in 40 years are shown by investigating the characteristics of the change of summer temperature and precipitation. The major conclusions of this study are as follows ： the average precipitation in June in Jinan city has been increasing most obviously since 19806 in recent 40 years and has been decreasing in July, and in august it has been decreasing obviously since 19706 in recent 40 years. The summer precipitation in Jinan city has been decreasing in recent 40 years. The average temperature in June in Jinan city has been decreasing but decreasing in July from 19606 to19806, and in august it has been decreasing obviously from 19606 to19706,then it has been increasing from 19806 to19906. The summer temperature in Jinan city has been increasing in recent 40 years. The average summer precipitation downward trend impact on the stop of springs.