【摘要】 利用多伦县气温、降水量、平均相对湿度、平均风速和日照时数资料,采用线性倾向估计、5年滑动平均等方法,分析了该地区近60年(1953-2012)的气候变化趋势。结果表明:年平均气温和季平均气温均呈上升趋势,年平均气温倾向率为0.39℃/10a,冬季增温对年增温贡献率最大,倾向率达0.57℃/10a;年降水量呈下降趋势,倾向率为-7.17mm/10a,夏季降水量对年降水量下降的贡献最大;平均相对湿度、平均风速和日照时数也均呈下降趋势,年倾向率分别为:-0.82%/10a、-0.11(m/s)/10a、-51.95h/10a,对年下降贡献最大的季节分别为冬季、冬季和春季;与全国、锡林郭勒盟及浑善达克沙地的气候变化趋势基本一致。更多还原

【Abstract】 In this paper the data of temperature,precipitation,mean relative humidity,mean wind speed,and the number of hours of sunlight Duolun County,and the linear trend estimates and five-year moving mean method were used to analyze the climate change trends for nearly 60 years( 1953-2012).The results show that the annual average temperature and average temperature showed an upward trend,the annual average temperature tendency rate was of 0.39℃ /10a,winter warming had the greatest contribution to the year-on-year warming tendency rate was of 0.57℃ /10a;Annual precipitation downward trend was at a rate of 7.17mm /10a,annual precipitation had the largest contribution to the decreased summer precipitation;The mean relative humidity,wind speed and sunshine hours also showed a downward trend,the annual trend rate were:-0.82% /10a,-0.11( m / s) /10a,-51.95h /10a respectively;the largest contribution to the annual decline was respectively the winter,winter and spring;The trend of climate change was same in this county with the national,Xilin guolemeng and Hunshandake.更多还原