2012 Fiscal Year Final Research Report
A study of global methane cycle over the last 130 kyrs based on Antarctic and Greenland deep ice cores
| Project/Area Number |
22310003
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
AOKI Shuji 東北大学, 大学院・理学研究科, 教授 (00183129)
MORIMOTO Shinji 国立極地研究所, 研究教育系, 准教授 (30270424)
KAWAMURA Kenji 国立極地研究所, 研究教育系, 准教授 (90431478)
UMEZAWA Taku 東北大学, 大学院・理学研究科, 特別教育研 (00570508)
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| Project Period (FY) |
2010 – 2012
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| Keywords | メタン / 氷床コア / 氷期 / 間氷期 / 物質循環 |
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| Research Abstract |
Temporal variations of atmospheric CH_4 concentration over the last 130 kyrs were reconstructed from deep ice cores drilled at Dome Fuji, Antarctica and NGRIP and NEEM, Greenland. By analyzing the reconstructed differences of CH_4 concentration between north and south polar regions using an atmospheric model, spatiotemporal variations of CH_4 emissions from natural sources were closely examined. The values ofδ^<13>C andδD of atmospheric CH_4 were also reconstructed using the Dome Fuji deep ice core. Based on their temporal variations, causes of glacial/interglacial variations in atmospheric CH_4 were discussed especially in terms of changes in CH_4 emissions from natural sources.
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Research Products
(32 results)
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[Journal Article] Gas transport in firn: multiple-tracer characterisation and model intercomparison for NEEM2011
Author(s)
C. Buizert, P. Martinerie, V. V. Petrenko, J. P. Severinghaus, C. M. Trudinger, E. Witrant, J. L. Rosen, A. J. Orsi, M. Rubino, D. M. Etheridge, L. P. Steele, C. Hogan, J. C. Laube, W. T. Sturges, V. A. Levchenko, A. M. Smith, I. Levin, T. J. Conway, E. J. Dlugokencky, P. M. Lang, K. Kawamura, T. M. Jenk, J. W. C. White, T. Sowers, J. Schwander, and T. Blunier
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Journal Title
Northern Greenland, Atmos. Chem. Phys. Discuss
Volume: 11
Pages: 15975-16021
Peer Reviewed
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[Presentation] Climatic and atmospheric histories over the past700,000 years from the Dome Fuji deep ice core2012
Author(s)
K. Kawamura, S. Aoki, T. Nakazawa, K. Matsumoto, H. Nakata, H. Matsusima, Y. Kikuchi, H. Motoyama, Y. Fujii, O. Watanabe
Organizer
Antarctica, G-COE 2012 Symposium
Place of Presentation
Sendai
Year and Date
20120925-28
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[Presentation] Accurately dated 700,000-year climatic record from the Dome Fuji ice core, Antarctica, International Partnerships in Ice Core Sciences First Open Science Conference2012
Author(s)
K. Kawamura, S. Aoki, T. Nakazawa, F. Parrenin, K. Suzuki, R. Uemura, A. Abe-Ouchi, M. Raymo
Organizer
Presqu'ile de Giens, Cote d'Azur
Place of Presentation
France
Year and Date
2012-10-04
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[Presentation] ドームふじ深層氷床コアから求められた過去72万年間の大気成分の変動2010
Author(s)
青木周司,川村賢二,中澤高清,松本康志,仲田久和,松島寛尚,菊地佑斗,本山秀明,藤井理行,渡辺興亜
Organizer
日本雪氷学会,平成22年度秋季大会
Place of Presentation
仙台
Year and Date
2010-09-27
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