| Atmospheric Methane in Ice Cores |
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| 作者姓名： | 徐柏青 姚檀栋 刘先勤 郭学军 |
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| 作者单位： | [1]Laboratory of environment and process on Tibetan Plateau, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China [2]Key Laboratory of Cryosphere and Environment, Jointly Established by Cold and Arid Regions Envi-ronmental and Engineering Research Institute and Institute of Tibetan Plateau Research, Chinese Acade-my of Sciences and Chinese Academy of Meteorological Science, China Meteorological Administration,Lanzhou 730000 , China |
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| 基金项目： | This work was supported by Chinese Academy of Sciences （Grant No. KZCX1-SW-01-10, KZCX3-SW-339）, Ministry of Science and Technology of China （Grant No. 2001CB711001）, National Natural Science Foundation of China （Grant No. 40121101） |
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| 摘 要： | The reconstruction of air trapped in ice cores provides us the most direct information about atmospheric CH4 variations in the past history. Ice core records from the ＂Three Poles （Antarctica, Greenland and Tibetan Plateau）＂ reveal the detailed fluctuations of atmospheric CH4 concentration with time and are allowed to quantify the CH4 differences among latitudes. These data are indispensably in the farther study of the relationship between greenhouse gases and climatic change, and of the past changes in terrestrial CH4 emissions. Ice cores reconstruction indicates that atmospheric CH4 concentration has increased quickly since industrialization, and the present day＇s level of atmospheric CH4 （1800 ppby） is unprecedented during the past Glacial-Interglacial climate cycles.
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| 关 键 词： | 海冰 甲烷 气候变化 环境气象 大气科学 |
| 收稿时间： | 2005-11-11 |
Atmospheric Methane in Ice Cores |
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| Xu Baiqing,Yao Tandong,Liu Xianqin,Guo Xuejun.Atmospheric Methane in Ice Cores[J].Chinese Journal of Polar Science,2005,16(2):90-100. |
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| Authors: | Xu Baiqing Yao Tandong Liu Xianqin Guo Xuejun |
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| Abstract: | The reconstruction of air trapped in ice cores provides us the most direct information about atmospheric CH4 variations in the past history. Ice core records from the "Three Poles (Antarctica, Greenland and Tibetan Plateau)" reveal the detailed fluctuations of atmospheric CH4 concentration with time and are allowed to quantify the CH4 differences among latitudes. These data are indispensably in the farther study of the relationship between greenhouse gases and climatic change, and of the past changes in terrestrial CH4 emissions. Ice cores reconstruction indicates that atmospheric CH4 concentration has increased quickly since industrialization, and the present day's level of atmospheric CH4 (1800 ppbv) is unprecedented during the past Glacial-Interglacial climate cycles. |
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| Keywords: | ice core Methane record Climate change |
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