2009 Fiscal Year Final Research Report
Study on atmospheric methane variations based on its carbon and hydrogen isotope measurements
| Project/Area Number |
18204042
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (A)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Meteorology/Physical oceanography/Hydrology
|
|---|
| Research Institution | Tohoku University |
|---|
Principal Investigator |
AOKI Shuji Tohoku University, 大学院・理学研究科, 教授 (00183129)
|
|---|
| Co-Investigator(Renkei-kenkyūsha) |
NAKAZAWA Takakiyo 東北大学, 大学院・理学研究科, 教授 (30108451)
MORIMOTO Shinji 国立極地研究所, 研究系, 助教 (30270424)
SUGAWARA Satoshi 宮城教育大学, 教育学部, 准教授 (80282151)
SAEKI Tazu 総合地球環境学研究所, 研究部, 助教 (30302243)
|
|---|
| Project Period (FY) |
2006 – 2009
|
| Keywords | メタン / 同位体 / 大気観測 / 微生物 / 化石燃料 / バイオマス燃焼 / 氷床コア |
|---|
| Research Abstract |
Atmospheric CH_4 concentration and its carbon and hydrogen isotopic ratios have been measured on the global scale. By applying the observed data to a global CH_4 cycle model, respective emission ratios of CH_4 from biogenic, fossil and biomass burning sources are estimated to be 70, 16 and 13%. In addition, we revealed variations of CH_4 concentration and these isotopic ratios for the last 250 years by using air samples extracted from firn and ice cores. As a result of the measurements, CH_4 emission from biogenic, fossil and biomass burning sources have increased rapidly since the latter half of 19 century, since the beginning of 20 century and for the last several decades, respectively.
|
-
-
[Journal Article] A new compact cryogenic air sampler and its application in stratospheric greenhouse gas observation at Syowa Station2009
Author(s)
Morimoto, S., T., Yamanouchi, H. Honda, S. Aoki, T. Nakazawa, S. Sugawara, S. Ishidoya, I. Iijima, T. Yoshida
-
Journal Title
Antarctica, J.Atmos And Ocean.Tech. 26
Pages: 2182-2191
Peer Reviewed
-
-
-
-
[Journal Article] Age of stratospheric air unchanged within uncertainties over the past 30 years2009
Author(s)
Engel, A., Mobius, T., Bonisch, H., Schmidt, U., Heinz, R., Levin, I., Atlas, E., Aoki, S., Nakazawa, T., Sugawara, S., Moore, F., Hurst, D., Elkins, J., Schauffler, S., Andrews, A., Boering, K.
-
Journal Title
Nature Geoscience 2
Pages: 28-31
Peer Reviewed
-
-
-
[Journal Article] Temporal and spatial variations of the atmospheric CO_2 concentration in China2008
Author(s)
Zhang, D., J. Tang, G. Shi, M. Wen, T. Nakazawa, S. Aoki, S. Sugawara, S. Morimoto, P. K. Patra, T. Hayasaka, T. Saeki
-
Journal Title
Geophys.Res.Lett. 35
Pages: L03801
Peer Reviewed
-
[Journal Article] Gravitational separation suggested by O2/N2, δ15N of N2, δ18O of O2, Ar/N2 observed in the lowermost part of the stratosphere at northern middle and high latitudes in the early spring of 20022008
Author(s)
Ishidoya, S., S. Morimoto, S. Sugawara, T. Watai, T. Machida, S. Aoki, T. Nakazawa, T. Yamanouchi
-
Journal Title
Geophys.Res.Lett. 35
Pages: L03812
Peer Reviewed
-
-
[Journal Article] Northern Hemisphere forcing of climatic cycles in Antarctica over the past 360,000 years2007
Author(s)
Kawamura, K., F. Parrenin, L. Lisiecki, R. Uemura, F. Vimeux, J. P. Severinghaus, M. Hutterli, T. Nakazawa, S. Aoki, J. Jouzel, M. E. Raymo, K. Matsumoto, H. Nakata, H. Motoyama, S. Fujita, K. Goto-Azuma, Y. Fujii, O. Watanabe
-
Journal Title
Peer Reviewed
-
-
[Journal Article] Weak Northern and Strong Tropical Land Carbon Uptake from Vertical Profiles of Atmospheric CO22007
Author(s)
Stephens, B. B., K. R. Gurney, P. P. Tans, C. Sweeney, W. Peters, L. Bruhwiler, P. Ciais, M. Ramonet, P. Bousquet, T. Nakazawa, S. Aoki, T. Machida, G. Inoue, N. Vinnichenko, J. Lloyd, A. Jordan, M. Heimann, O. Shibistova, R. L. Langenfelds, L. P. Steele, R. J. Francey, A. S. Denning
-
Journal Title
Science 316
Pages: 1732-1735
Peer Reviewed
-
-
-
-
-
-
-
-
-
[Journal Article] Validation of ILAS-II Version 1.4 nitrous oxide and methane profiles2006
Author(s)
Ejiri, M. K., Y. terao, T. Sugita, H. Nakajima, T. Yokota, G. Toon, B. Sen, G. Wetzel, H. Oelhaf, J. Urban, D. Multagh, H. Irie, N. Saitho, T. Tanaka, H. Kanzawa, M. Shiotani, S. Aoki, G. Hashida, T. Machida, T. Nakazawa, H. Kobayashi, Y. Sasano.
-
Journal Title
J.Geophys,Res. 111
Pages: D22S90
Peer Reviewed
-
-
-
-
-
[Presentation] Variations of atmospheric components over the past 720,000 years deduced from Dome Fuji deep ice core2009
Author(s)
Aoki S., K. Kawamura, T. Nakazawa, K. Matsumoto, H. Nakata, H. Matsushima, Y. Kikuchi, H. Motoyama, Y. Fujii, O. Watanabe
Organizer
The 2nd International Symposium on the Dome Fuji ice core and related topics
Place of Presentation
Tokyo
Year and Date
20091118-20091120
-
-
-
-
-
-
-
[Presentation] Thirty years of stratospheric mean age tracer measurements : no observable change in the stratospheric circulation2008
Author(s)
Engel A., T. Mobius, H. Bonisch, U. Schmidt, R. Heinz, I. Levin, E. Atlas, S. Aoki, T. Nakazawa, S. Sugawara, F. Moore, D. Hurst, J. Elkins, S. Schauffler, A. Andrews, K. Boering
Organizer
2008 AGU Fall Meeting
Place of Presentation
San Fransisco
Year and Date
20081215-20081219
-
[Presentation] 第49次夏隊での温室効果気体観測報告2008
Author(s)
森本真司, 浅野比, 青山朋樹, 山内恭, 本田秀之, 菅原敏, 石戸谷重之, 後藤大輔, 青木周司, 中澤高清
Organizer
平成20年度極域気水圏・生物圏合同シンポジウム
Place of Presentation
立川
Year and Date
20081202-20081205
-
-
-
[Presentation] 平成21年度成層圏大気クライオサンプリング実験概要2008
Author(s)
青木周司, 中澤高清, 本田秀之, 豊田栄, 菅原敏, 森本真司, 石戸谷重之, 吉田尚弘, 中村俊夫, 蒲生俊敬, 角皆潤
Organizer
平成20年度大気球シンポジウム
Place of Presentation
相模原
Year and Date
20080925-20080926
-
-
-
-
-
-
-
-
-
-
[Presentation] Variations of the atmospheric methane concentration in China2006
Author(s)
Saeki, T., S. Sugawara, S. Aoki, T. Nakazawa, S. Ishidoya, J. Tang, D. Zhang, G.-Y. Shi, Y.-Z. Liu, S. Morimoto, T. Hayasaka
Organizer
Joint CACGP/IGAC and WMO conference
Place of Presentation
Cape Town
Year and Date
20060917-20060923
-
-
-
-
-
-
