近40年青藏高原地区地表温度的年际及季节性变化特征分析  

Annual and Seasonal Variation Characteristics of Surface Temperature in the Tibetan Plateau in Recent 40 Years

作　　者：柏露 姚宜斌[1] 雷祥旭[1] 张良[1] BAI Lu;YAO Yibin;LEI Xiangxu;ZHANG Liang(School of Geodesy and Geomatics,Wuhan University,Wuhan 430079 ,China)

机构地区：[1]武汉大学测绘学院

出　　处：《测绘地理信息》2018年第2期15-18,共4页Journal of Geomatics

基　　金：国家自然科学基金资助项目(41574028)

摘　　要：利用1979-2015年的欧洲中期天气预报中心高分辨再分析资料ERA-Interim,采用纬圈长度加权的方法对青藏高原和全球的温度变化特征进行了对比研究。结果表明,青藏高原地区平均地表温度低于周边,空间分布不均,呈由东南向西北逐渐降低的特点;1979-2015年青藏高原地区和全球范围在各个季节的平均温度均呈现出上升趋势,同时青藏高原的升温速率比全球平均值略高;与全球温度变化相比,青藏高原地区的温度变化幅度较大,反映出高原地区的温度变化对于全球变暖更为敏感,进一步证实了该区域是全球温度变化的放大器。Based on high resolution reanalysis data ERA-Interim of ECMWF（European Centre for Medium-Range Weather Forecasts）from 1979 to 2015 and the latitudinal circle length weighting method,this paper makes a comparison analysis of the characteristics of temperature change in the Qinghai-Tibet Plateau and the global.Results can be summarized as follows：The average surface temperature of the Tibetan Plateau is lower than that of the surrounding areas and the spatial distribution is uneven,which gradually decreases from the southeast to the northwest;the annual average temperature and the seasonal average temperature of Tibetan Plateau and the global show a rising trend between1979 to 2015.At the same time,the heating rate of Tibetan Plateau is slightly higher than that of the global.Compared with the global temperature change,the change of temperature in Tibetan Plateau is larger,which reflects that the temperature change in the plateau region is more sensitive than that of the global,and it is the amplifier of the global temperature change.

关 键 词：青藏高原 地表温度 年际变化 季节性变化 加权平均 

分 类 号：P423.3[天文地球—大气科学及气象学]