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Variations in air temperature during the last 100 years revealed by δ^(18)O in the Malan ice core from the Tibetan Plateau

查看全文 作　　者：WANG Ninglian, YAO Tandong, PU Jianchen, ZHANG Yongliang, SUN Weizhen & WANG Youqing Key Laboratory of Ice Core and Cold Regions Environment, Cold and Arid Regions Environmental and Engineering Research Institute, ChineseAcademy of Sciences, Lanzhou 730000, China 高影响力作者 出　　处：《Chinese Science Bulletin》索引2003年第48卷第19期,共5页高影响力期刊 基　　金：This work was supported by the knowledge Innovation Project of the Chinese Academy of Sciences(Grant Nos.KZCX1-10-02 und KZCX2-314);the Key Research Project of the Chinese National Committee of Science and Technology(Grant No.G1998040800);the Innovation Rescarch Project of the National Natural Science Foundation of China. 摘　　要：By comprehensive analyses, it was found that the variations in d 18O recorded in Malan ice core from theKekexili Region on the Tibetan Plateau could represent thechanges in air temperature during the summer half year (from May to October) over the Kekexili Region and the northern margin of the Tibetan Plateau. The general increase trend in d18O in this ice core during the past century indicated climate warming, and it was estimated that air temperature during the summer half-year rose about 1.2C over there then. However, this ice core record documented that the study area has been cooling while most of the world has been dramatically warming since the late 1970s. A teleconnection was foundbetween the variations in d 18O in the Malan ice core and the North Atlantic Oscillation. Moreover, the variations in d 18O in this ice core were similar to that in the summer half-year air temperature over the southern Tibetan Plateau on thecenturial time scale, but opposite on the multidecadal timescale. 关 键 词：空气温度 Δ^18O 西藏高原 全球变暖 马伦冰核 北大西洋波动 气候变化
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