【摘要】 以东北地区(包括黑龙江省、吉林省、辽宁省、内蒙古地区)为研究区域,1960年~2015年138个气象站点的月平均气温数据为数据源,采用网格面积加权法,获得这四个省、地区冬季平均温度时间序列,运用反距离加权法、样条法和克里金法插值并进行验证,获得东北地区冬季气温空间分布图。将1960~2015年数据按照年际、年代际进行划分,分析随时间变化东北地区气温的趋势图计算方差。研究结果表明:56年来,东北地区的平均气温大致以0.0481℃/年的幅度呈上升趋势,东北暖指数明显增加,暖夜日平均增加趋势为1.4d/10a,北区达到1.9d/10a,南区相对较小为1.2d/10a,故北部相对南部升温快、幅度大。根据气温的时间变化折线图可知,1980~1984年为气温最低年际,2004~2008为气温最高年际,60~70年代是增温过程,70~80年代是降温过程,80年代之后为增温过程,且增温现象明显。根据增温情况,大致以1991年为界,60年代至90年代为偏冷期,90年代之后是偏暖期。更多还原

【Abstract】 The Northeast part of China( including Heilongjiang Province,Jilin Province,Liaoning province and Inner Mongolia province) was used as the study area,1960 ~ 2015 years of 138 meteorological stations in the monthly mean temperature data as data source in which used the grid area weighted method and obtained the four provinces area,average winter temperature time series. The inverse distance weighted method,spline method and Kriging interpolation and verify the obtained spatial distribution of temperature in winter in Northeast china was also used.The annual data of 1960 ~ 2015 are divided according to the inter-annual and inter-decadal conditions,and the trend of the temperature in Northeast China is calculated and the variance is calculated. The results show that the average temperature in Northeast China generally increased by 0. 0481 C/year rate for 56 years and shows a trend of northeast warm index increased obviously,the trend was 1. 4 d/10 a warm night and day to increase the average reached 1. 9 d/10 a,North and south is relatively small for 1. 2 d/10 a,the phase of North South fast heating,large amplitude. According to the change of temperature in the time line chart,the period of 1980 ~ 1984 had the lowest temperature and the period of 2004 ~ 2008 had the highest temperature. Interannual,60 ~ 70 ’s warming process,70 ~ 80 is in the cooling process after 80 s for warming,and the warming phenomenon is obvious. According to the temperature increase,roughly bounded by 1991,60 s to 90 s for the cold period,after 90 s is warm period.更多还原