虎林市初冬气候特征的变化分析

Analysis of climate change in the early winter of Hulin

利用虎林市气象站1971-2006年35年的初冬(11月份)的气象观测资料,对虎林市各气象要素的气候平均值进行了统计分析。结果表明:虎林市初冬的平均气温和地面平均温度逐年升高,特别在90年代后升高显著,积雪日数减少,同时积雪深度是降低趋势。有冻土的开始日期拖后,冻土深度降低且期间有融化现象,出现第二个有冻土的开始日期增多。在此基础上初步探讨了引起本地气候变化的原因,并进行了应用分析。

The climate averages of the meteorological elements were analysised by using of the meteorological observation data of 35 winter years(1971-2006) in Hulin Weather Station.The results showed that the average winter temperature and the average surface temperature were increasing year by year in Hulin City.The temperature was significantly higher especially after the high 90 years.The number of snow days reduced and the snow depth was lower.The start date of frozen soil delayed.The depth of frozen soil decreased and the soil become to melt.The second start date of frozen soil was more.On this basis,the causes of climate change was studied and analyzed preliminarily.