【摘要】 利用国家气候中心整编的1951—2000年中国160个站月平均气温资料,选出东北地区20个代表站,在分析东北气温季节—年际变化特征的基础之上,着重分析了东北夏季气温的年际、年代际变化的时空特征。发现:夏季气温20世纪50年代中期之前略偏高,50年代中期以后至70年代最低,80年代开始缓慢回升,90年代增暖程度加大,50a来有增暖的趋势;气温异常存在3a、4a、7a的年际周期和16a的年代际周期;东北地区夏季升温趋势与中国黄河以北地区是一致的,而与黄河以南—江南地区是反位相的,东北地区是我国夏季升温最显著的地区之一。更多还原

【Abstract】 The monthly mean temperature data at 160 stations in China during 1951-2000 are used,and among which 20 stations are selected as representative stations of Northeast China.On the basis of the analysis of seasonal and interannual variations,the interannual and interdecadal variations of summer temperature in Northeast China are emphatically studied in this paper.It is found that summer temperature in Northeast China is slightly warmer before 1956,is the lowest in 1956-1970’s,slowly began to rise in 1980’s,got much warmer in 1990’s.The warming trend is obvious in the recent 50 years,with a warming rate of 0.235°С/10a.The summer temperature anomaly shows the threeyear,fouryear,sevenyear and sixteenyear periodic variations in Northeast China.The warming trend is similar with that in North China,but it is opposite to that in areas south of the Huanghe River.The rising of summer temperature in Northeast China is one of the most prominent in China.更多还原