近半个世纪来锡林郭勒盟地区气温变化特征分析

Temperature change features in Xilin Gol League in the recent half century

利用近49年(1960～2008年)锡林郭勒盟各台站的气温资料,对锡林郭勒盟地区近49年的年、季节平均气温和最低气温及最高气温变化特征进行对比分析。结果表明:上述各气温均呈上升趋势,平均、最低、秋季最高气温上升明显。全盟年平均气温增温速率为0.43℃/10a,偏大于全国增温速率。最低气温增温比平均增温显著,平均气温增温比最高增温显著,但秋季最高气温增温均比平均和最低增温显著。且增温速率随年际变化逐渐增大。季节平均气温的增温速率冬季最大,季节最低气温的增温速率春季最大。季节最高气温的增温速率秋季最大。

Based on the temperature data of the meteorological stations in Xilin Gol League,Inner Mongolia for the past 49 years（1960~2008）,the paterns of annual and seasonal temperature and minimum temperatures were analyzed and compared.The results showed that both of the temperatures displayed clear increasing trends,with the annual temperature warming rate of 0.43℃/10a,which was slightly larger than that over the whole country.The minimum temperature warmings were more significant than the average ones.Among the overall temperature increasing trends,different periods had the different speeds.The warming rate of seasonal average temperature was the largest in winter,and the warming rate of seasonal minimum temperature was the largest in autaumn.