天山北坡东部地区近47a来气温和降水变化分析

Analysis on Characteristics of Temperature and Precipitation in the East of Tianshan Mountains Northern Slope between 1961 and 2007

根据天山北坡东部地区3个气象站的气温降水资料,利用线性趋势及5年滑动平均等方法,分析了该地区47a的气候变化。结果表明,47a来天山北坡东部地区年平均气温及季节平均气温总体呈上升趋势,1980年以后是气温上升最显著的时期,从线性拟合来看,冬季气温升高最为显著;该地区年平均降水呈上升趋势,春、夏、冬季平均降水量变化与年平均降水量变化一致,秋季平均降水略呈下降趋势;该地区气候呈现暖湿化趋势。

According to the data of temperature and precipitation at three meteorological stations in the east of Tianshan Mountains northern slope between 1961 and 2007,the climate changes were analyzed using the linear fitting and moving-average method.The results showed that the mean annual and seasonal temperatures displayed an increasing trend between 1961 and 2007 in this area,and the temperature increased most significantly since 1980.According to the linear fitting,the temperature increased most significantly in summer.The precipitation also displayed an increasing trend between 1961 and 2007 in this area.According to the linear fitting,the seasonal precipitation had increased except autumn.The climate in this area became warm and wet.