2010 Fiscal Year Final Research Report
A study on temporal variations of the atmospheric methane concentration at Canadian sub-Arctic region using its carbon and hydrogen isotope ratios
| Project/Area Number |
19310016
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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 | National Institute of Polar Research |
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Principal Investigator |
MORIMOTO Shinji National Institute of Polar Research, 研究教育系, 准教授 (30270424)
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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)
NAKAZAWA Takakiyo 東北大学, 大学院・理学研究科, 教授 (30108451)
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| Research Collaborator |
LIN Huang カナダ環境省研究所, 研究員
DOUG Worthy カナダ環境省研究所, 研究員
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| Project Period (FY) |
2007 – 2010
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| Keywords | 物質循環 / 温室効果気体 / メタン / 同位体比 / 北極 |
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| Research Abstract |
Atmospheric methane is one of the most important greenhouse gases and Canadian sub-Arctic is considered to be an important source region of it. We have maintained systematic air sampling at Churchill (58°N, 94°W) and subsequent analyses for stable isotopes of carbon and hydrogen (δ^<13>C、δD) in methane for 4 years. By analyzing their seasonal cycles, it is implied that methane emission from wetland plays an important role in the CH_4 concentration variation.
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