Atmospheric Methane over the Past 2000 Years from a Sub-tropical Ice Core, Central Himalayas
文献类型：期刊论文
| 作者 | Li Jiule ; Xu Baiqing ; Yao Tandong ; Wang Ninglian ; MacClune, Ken |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2010-03 |
| 卷号 | 7期号:1页码:1–14 |
| 关键词 | climate change ice core air bubble atmospheric methane Dasuopu Glacier central Himalayas |
| ISSN号 | 1672-6316 |
| 通讯作者 | Li, JL |
| 英文摘要 | A high-resolution 2000-year methane record has been constructed from an ice core recovered at 7200 m a.s.l. on the Dasuopu Glacier in the central Himalayas. This sub-tropical methane record reveals an increasing trend in the concentration of methane during the industrial era that is similar to observations from polar regions. However, we also observed the differences in the atmospheric methane mixing ratio between this monsoon record and those from polar regions during pre-industrial times. In the time interval 0 similar to 1850 A.D., the average methane concentration in the Dasuopu ice core was 782 +/- 40 ppbv and the maximum temporal variation exceeded 200 ppbv. The difference gradient of methane concentration in Dasuopu ice core with Greenland and Antarctica cores are 66 +/- 40 ppbv and 107 +/- 40 ppbv, respectively. This suggests that the tropical latitudes might have acted as a major global methane source in pre-industrial times. In addition, the temporal fluctuation of the pre-industrial methane records suggests that monsoon evolution incorporated with high methane emission from south Asia might be responsible for the relatively high methane concentration observed in the Dasuopu ice core around A.D. 800 and A.D. 1600. These results provide a rough understanding of the contribution of tropical methane source to the global methane budget and also the relationship between atmospheric methane and climate change. |
| 语种 | 英语 |
| 公开日期 | 2013-08-12 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/5881]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2010_Vol7 No.1 |
| 推荐引用方式 GB/T 7714 | Li Jiule,Xu Baiqing,Yao Tandong,et al. Atmospheric Methane over the Past 2000 Years from a Sub-tropical Ice Core, Central Himalayas[J]. JOURNAL OF MOUNTAIN SCIENCE,2010,7(1):1–14. |
| APA | Li Jiule,Xu Baiqing,Yao Tandong,Wang Ninglian,&MacClune, Ken.(2010).Atmospheric Methane over the Past 2000 Years from a Sub-tropical Ice Core, Central Himalayas.JOURNAL OF MOUNTAIN SCIENCE,7(1),1–14. |
| MLA | Li Jiule,et al."Atmospheric Methane over the Past 2000 Years from a Sub-tropical Ice Core, Central Himalayas".JOURNAL OF MOUNTAIN SCIENCE 7.1(2010):1–14. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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