中国北方中部地区近五十年气温和降水的变化趋势  

Temperature and precipitation changes in north central China in the last 50 years

作　　者：王明昌[1] 刘锬[1] 江源[1,2] 康慕谊[1,2] 王彪[1] 

机构地区：[1]北京师范大学资源学院,北京100875 [2]北京师范大学地表过程与资源生态国家重点实验室,北京100875

出　　处：《北京师范大学学报（自然科学版）》2015年第6期631-635,共5页Journal of Beijing Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(41171067)

摘　　要：基于中国北方中部地区150个气象站点的气象数据,对该地区近50年来气温和降水量的倾向率及其空间分布运用线性趋势分析和空间插值等方法进行分析.结果表明：该地区气温在近50年呈现出整体上升趋势,且2月份的升温最为显著;气温变化趋势的分布格局上,东南部升温速率较西北部低;平均最低气温上升趋势明显,对气温升高的贡献率较大;降水量呈下降趋势,下降区域主要集中在35~40°N之间,且主要与7、8月份降水量减少有关.Meteorological data from 150 stations in central northern China were used to analyze changes in temperature and precipitation and spatial distribution with linear trend analysis and spatial interpolation analysis.It was found that temperature tended to increase in the last five decades in the region.The most significant warming tended to appear in February.The rate of warming in the southeastern region was lower than in the northwestern region.Average minimum temperature increased significantly,making a great contribution towards overall warming.Precipitation showed a decreasing trend,mainly concentrated in the region between 35°~40°N,mainly due to decreased precipitation in July and August.

关 键 词：中国北方 气温 降水 倾向率 气候变化 

分 类 号：P467[天文地球—大气科学及气象学]