A study of global methane cycle over the last 130 kyrs based on Antarctic and Greenland deep ice cores

• Project/Area Number: 22310003
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Tohoku University
• Principal Investigator: NAKAZAWA Takakiyo 東北大学, 大学院・理学研究科, 名誉教授 (30108451)
• 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)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000); Fiscal Year 2012: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2011: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2010: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
• Keywords: メタン / 氷床コア / 氷期 / 間氷期 / 物質循環 / 濃度 / 同位体比 / 循環 / 大気輸送モデル

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.

Research Products

• [Journal Article] 温室効果気体の変動と循環～その理解に向けた研究の歩み～ (2013)
  • Author(s): 中澤高清
  • Journal Title: 天気 Volume: 60 Pages: 145-163
  • Peer Reviewed
• [Journal Article] 温室効果気体の変動と循環 ～その理解に向けた研究の歩み～ (2013)
  • Author(s): 中澤高清
  • Journal Title: 天気 Volume: 60 Pages: 145-163
  • Peer Reviewed
• [Journal Article] Contributions of natural and anthropogenic sources to atmospheric methane variations over Western Siberia estimated from its carbon and hydrogen isotopes (2012)
  • Author(s): T. Umezawa, T. Machida, S. Aoki and T. Nakazawa
  • Journal Title: Global Biogeochem. Cycles Volume: 26 Issue: 4
  • DOI: 10.1029/2011gb004232
  • Peer Reviewed
• [Journal Article] Carbon and hydrogen isotopic ratios of atmospheric methane in the upper troposphere over the western Pacific (2012)
  • Author(s): T. Umezawa, T. Machida, K. Ishijima, H. Matsueda, Y. Sawa, P. K. Patra, S. Aoki and T. Nakazawa
  • Journal Title: Atmos. Chem. Phys. Volume: 12 Issue: 17 Pages: 8095-8113
  • DOI: 10.5194/acp-12-8095-2012
  • Peer Reviewed
• [Journal Article] A new multi-gas constrained model of trace gas non-homogeneous transport in firn: evaluation and behaviour at eleven polar sites (2012)
  • Author(s): Witrant, E., Martinerie, P., Hogan, C., Laube, J. C., Kawamura, K., Capron, E., Montzka, S. A., Dlugokencky, E. J., Etheridge, D., Blunier, T., and Sturges, W. T.
  • Journal Title: Atmos. Chem. Phys. Volume: 12 Issue: 23 Pages: 11465-11483
  • DOI: 10.5194/acp-12-11465-2012
  • Peer Reviewed
• [Journal Article] Gas transport in firn: multiple-tracer characterisation and model intercomparison for NEEM, Northern Greenland (2012)
  • Author(s): Buizert, C. et al.
  • Journal Title: Atmos. Chem. Phys. Volume: 12 Issue: 9 Pages: 4259-4277
  • DOI: 10.5194/acp-12-4259-2012
  • Peer Reviewed
• [Journal Article] High variability of Greenland surface temperature over the past 4000 years estimated from trapped air in an ice core (2012)
  • Author(s): Kobashi, T., Kawamura, K., Severinghaus, J. P., Barnola, J.-M., Nakaegawa, T., Vinther, B. M., Johnsen, S. J., and Box, J.E.
  • Journal Title: Geophysical Research Letters Volume: 38 Issue: 21 Pages: n/a-n/a
  • DOI: 10.1029/2011gl049444
  • Peer Reviewed
• [Journal Article] 過去数十万年にわたる温室効果ガス変動の復元 (2011)
  • Author(s): 中澤高清
  • Journal Title: 計測と制御 Volume: 50 Pages: 869-876
  • NAID: 10029795336
  • Peer Reviewed
• [Journal Article] Carbon and hydrogen stable isotopic ratios of methane emitted from wetlands and wildfires in Alaska: aircraft observations and bonfire experiments (2011)
  • Author(s): T. Umezawa, S. Aoki, Y. Kim, S. Morimoto, and T. Nakazawa
  • Journal Title: J. Geophys. Res Volume: 116 Issue: D15
  • DOI: 10.1029/2010jd015545
  • Peer Reviewed
• [Journal Article] High variability of Greenland surface temperature over the past 4000 years estimated from trapped air in an ice core (2011)
  • Author(s): T. Kobashi, K. Kawamura, J. P. Severinghaus, J. M. Barnola, T. Nakaegawa, B. M. Vinther, S. J. Johnsen, and J. E. Box
  • Journal Title: Geophys. Res. Lett. Volume: 38
  • Peer Reviewed
• [Journal Article] Gas transport in firn: multiple-tracer characterisation and model intercomparison for NEEM (2011)
  • 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
  • Journal Title: Northern Greenland, Atmos. Chem. Phys. Discuss Volume: 11 Pages: 15975-16021
  • Peer Reviewed
• [Journal Article] Gas transport in firn : multiple-tracer characterisation and model intercomparison for NEEM, Northern Greenland (2011)
  • Author(s): C.Buizert, et al
  • Journal Title: Atmos.Chem.Phys.Discuss. Volume: 11 Pages: 15975-16021
  • Peer Reviewed
• [Journal Article] 南北両極域における大気中の温室効果気体と関連気体の変動 (2011)
  • Author(s): 森本真司, 他
  • Journal Title: 南極資料 Volume: 55(印刷中)
  • NAID: 120005510502
  • Peer Reviewed
• [Journal Article] 南北両極域における大気中の温室効果気体と関連気体の変動 (2010)
  • Author(s): 森本真司,石戸谷重之,石島健太郎,八代尚,梅澤拓,菅原敏,橋田元,青木周司,中澤高清,山内恭
  • Journal Title: 南極資料 Volume: 54 Pages: 374-409
  • NAID: 120005510502
  • Peer Reviewed
• [Presentation] Global methanesimulation for the period 1910-2010 using atmospheric general circulation model based chemistry transport model (2013)
  • Author(s): A. Ghosh, P. K. Patra, K. Ishijima, S. Morimoto, K.Kawamura, S. Sugawara, A.Ito, S. Aoki and T. Nakazawa
  • Organizer: Third International Symposium on the Arctic Research
  • Place of Presentation: Tokyo
  • Year and Date: 2013-01-16
• [Presentation] Model resolution comparison for methane simulation in the Arctic region (2013)
  • Author(s): K. Ishijima, P. K. Patra, A. Ghosh, S. Morimoto, T. Machida, M. Sasakawa, Y. Tojima, A. Ito, S. Aoki and T. Nakazawa
  • Organizer: Third International Symposiumon the Arctic Research
  • Place of Presentation: Tokyo
  • Year and Date: 2013-01-16
• [Presentation] Reconstruction of past variations of δ^<13>C and .D in atmospheric CH_4 from its vertical distribution observed in NGRIP firn (2013)
  • Author(s): S. Sugawara, T. Umezawa, T. Sugiyama, K. Kawamura, S. Morimoto, S. Aoki and T. Nakazawa
  • Organizer: Third International Symposium on the Arctic Research
  • Place of Presentation: Tokyo
  • Year and Date: 2013-01-15
• [Presentation] Climatic and atmospheric histories over the past 700,000 years from the Dome Fuji deep ice core, Antarctica (2012)
  • Author(s): K. Kawamura, S. Aoki, T. Nakazawa, F. Parrenin, K. Suzuki, R. Uemura, A. Abe-Ouchi and H. Motoyama
  • Organizer: 第3回極域科学シンポジウム
  • Place of Presentation: 東京
  • Year and Date: 2012-11-28
• [Presentation] Accurately dated 700,000-year climatic record from the Dome Fuji ice core, Antarctica, International Partnerships in Ice Core Sciences First Open Science Conference (2012)
  • 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
• [Presentation] 南極ドームふじ氷床コアのO_2/N_2年代による北大西洋の海底コア年代の束縛 (2012)
  • Author(s): 川村賢二,青木周司,中澤高清,阿部彩子,齋藤冬樹,鈴木香寿恵
  • Organizer: 地球惑星科学連合2012年大会
  • Place of Presentation: 幕張
  • Year and Date: 2012-05-23
• [Presentation] 南極ドームふじ氷床コアのO_2/N_2年代による北大西洋の海底コア年代の東縛 (2012)
  • Author(s): 川村賢二, 他
  • Organizer: 地球惑星科学連合2012年大会
  • Place of Presentation: 幕張
  • Year and Date: 2012-05-23
• [Presentation] Histories of atmospheric methane and its carbon and hydrogen isotopic ratios over the last 250 years obtained from an ice core and firn air (2012)
  • Author(s): T. Umezawa, T., S. Sugawara, T. Sugiyama, K. Kawamura, S. Aoki, and T. Nakazawa
  • Organizer: EGU General Assembly 2012
  • Place of Presentation: Vienna, Austria
  • Year and Date: 2012-04-24
• [Presentation] Accurate age scale of the Dome Fuji ice core, Antarctica from O_2/N_2 ratio of trapped air (2012)
  • Author(s): K. Kawamura, S. Aoki, T. Nakazawa, K. Suzuki, and F. Parrenin
  • Organizer: EGU General Assembly, Vienna
  • Place of Presentation: Austria
  • Year and Date: 2012-04-22
• [Presentation] Climatic and atmospheric histories over the past700,000 years from the Dome Fuji deep ice core (2012)
  • 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
• [Presentation] 気泡空気の酸素濃度を用いたドームふじ氷床コアの正確な年代決定 (2011)
  • Author(s): 川村賢二, 他
  • Organizer: 第2回極域科学シンポジウム
  • Place of Presentation: 東京
  • Year and Date: 2011-11-15
• [Presentation] 極域における温室効果気体の観測 (2011)
  • Author(s): 青木周司,森本真司,橋田元,菅原敏,八代尚,石戸谷重之,梅澤拓,山内恭,中澤高清
  • Organizer: 第2回極域科学シンポジウム
  • Place of Presentation: 立川
  • Year and Date: 2011-11-14
• [Presentation] 北極域における大気中メタン濃度と同位体比の変動 (2011)
  • Author(s): 森本真司,梅澤拓,青木周司,中澤高清
  • Organizer: 第2回極域科学シンポジウム
  • Place of Presentation: 立川
  • Year and Date: 2011-11-14
• [Presentation] 気泡空気の酸素濃度を用いたドームふじ氷床コアの正確な年代決定 (2011)
  • Author(s): 川村賢二,青木周司,中澤高清
  • Organizer: 第2回極域科学シンポジウム
  • Place of Presentation: 立川
  • Year and Date: 2011-11-14
• [Presentation] 極域における温室効果気体の観測 (2011)
  • Author(s): 青木周司, 他
  • Organizer: 第2回極域科学シンポジウム
  • Place of Presentation: 東京
  • Year and Date: 2011-11-14
• [Presentation] 北極域における大気中メタン濃度と同位体比の変動 (2011)
  • Author(s): 森本真司, 他
  • Organizer: 第2回極域気水圏シンポジウム
  • Place of Presentation: 東京
  • Year and Date: 2011-11-14
• [Presentation] ドームふじ氷床コアのO_2/N_2年代から見た間氷期のタイミングと長さ (2011)
  • Author(s): 川村賢二,青木周司,中澤高清,阿部彩子,齋藤冬樹
  • Organizer: 第四紀学会2011年大会
  • Place of Presentation: 徳島
  • Year and Date: 2011-08-27
• [Presentation] Timing and duration of the last four interglacial periods in marine delta-180 constrained by the Dome Fuji ice core, Antarctica (2011)
  • Author(s): K.Kawamura, et al
  • Organizer: INQUA Congress
  • Place of Presentation: Bern
  • Year and Date: 2011-07-25
• [Presentation] Timing and duration of the last four interglacial periods in marine delta-18O constrained by the Dome Fuji ice core (2011)
  • Author(s): K. Kawamura, F. Parrenin, S. Aoki, T. Nakazawa, K. Suzuki, A. Abe-Ouchi and F. Saito
  • Organizer: Antarctica, INQUA Congress, Bern
  • Place of Presentation: Switzerland
  • Year and Date: 2011-07-24
• [Presentation] 氷床コアから見た南北気候のつながり (2011)
  • Author(s): 川村賢二,青木周司,中澤高清
  • Organizer: 日本気象学会春季大会シンポジウム「変動する地球気候の鍵-南極・北極-」
  • Place of Presentation: 東京
  • Year and Date: 2011-05-20
• [Presentation] 氷床コアから見た南北気候のつながり (2011)
  • Author(s): 川村賢二, 他
  • Organizer: 日本気象学会春季大会シンポジウム
  • Place of Presentation: 東京
  • Year and Date: 2011-05-20
• [Presentation] Observations of atmospheric CH_4 and its carbon and hydrogen stable isotopic ratios in the upper troposphere over the western Pacific (2011)
  • Author(s): T.Umezawa, et al
  • Organizer: EGU General Assembly 2011
  • Place of Presentation: Vienna
  • Year and Date: 2011-04-05
• [Presentation] Effects of natural and anthropogenic CH_4 sources on variations of atmospheric CH_4 over western Siberia identified by its carbon and hydrogen stable isotopes (2010)
  • Author(s): T.Umezawa, et al
  • Organizer: 2010 AGU Fall Meeting
  • Place of Presentation: San Francisco、米国
  • Year and Date: 2010-12-15
• [Presentation] Interannual variations of the atmospheric methane concentration and its stable isotopes observed at Ny Aalesund, Svalbard and Churchill, Canada (2010)
  • Author(s): S. Morimoto, T. Umezawa, L. Huang, S. Aoki, T. Nakazawa and T. Yamanouchi
  • Organizer: 2nd International Symposium on Arctic Research
  • Place of Presentation: Tokyo
  • Year and Date: 2010-12-08
• [Presentation] Interannual variations of the atmospheric methane concentration and its stable isotopes observed at Ny Alesund, Svalbard and Churchill, Canada (2010)
  • Author(s): S.Morimoto, et al
  • Organizer: 2nd International Symposium on Arctic Research
  • Place of Presentation: 東京
  • Year and Date: 2010-12-08
• [Presentation] 極域における温室効果気体の観測 (2010)
  • Author(s): 青木周司,森本真司,橋田元,菅原敏,八代尚,石戸谷重之,梅澤拓,山内恭,中澤高清
  • Organizer: 第1回極域科学シンポジウム
  • Place of Presentation: 立川
  • Year and Date: 2010-12-02
• [Presentation] 西シベリア上空での大気メタンの炭素・水素安定同位体比観測:大気中メタン濃度変動への地表放出源の影響評価 (2010)
  • Author(s): 梅澤拓, 他
  • Organizer: 第16回大気化学討論会
  • Place of Presentation: 八王子
  • Year and Date: 2010-11-18
• [Presentation] Timing and duration of the last four interglacial periods (2010)
  • Author(s): K. Kawamura, S. Aoki, T. Nakazawa and A.Abe-Ouchi
  • Organizer: 3rd workshop of PAGES working group on past interglacial climates (PIGS)
  • Place of Presentation: New York, USA
  • Year and Date: 2010-10-21
• [Presentation] Timing and duration of the last four interglacial periods (2010)
  • Author(s): K.Kawamura, et al
  • Organizer: 3rd workshop of PAGES working group on past interglacial climates (PIGS)
  • Place of Presentation: New York、米国
  • Year and Date: 2010-10-21
• [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
• [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, 他
  • 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
• [Presentation] Greenhouse gases, nitrogen, oxygen and noble gas variations over glacial-interglacial cycles (2010)
  • Author(s): K. Kawamura, S. Aoki, T. Nakazawa, J. Severinghaus, A. Abe-Ouchi and F. Saito
  • Organizer: 10th International Conference on Paleocenography
  • Place of Presentation: La Jolla, USA
  • Year and Date: 2010-09-03
• [Presentation] Greenhouse gases, nitrogen, oxygen and noble gas variations over glacial-interglacial cycles (2010)
  • Author(s): K.Kawamura, et al
  • Organizer: 10th International Conference on Paleocenography
  • Place of Presentation: La Jolla、米国
  • Year and Date: 2010-09-03
• [Presentation] Millennial-scale climatic changes during the last seven glacial periods: perspective from the Dome Fuji ice core records (2010)
  • Author(s): K. Kawamura and the Dome Fuji Ice Core Project Members
  • Organizer: PAGES Regional Workshop
  • Place of Presentation: Nagoya
  • Year and Date: 2010-06-06
• [Presentation] Millennial-scale climatic changes during the last seven glacial periods : perspective from the Dome Fuji ice core records (2010)
  • Author(s): K.Kawamura, et al
  • Organizer: PAGES Regional Workshop
  • Place of Presentation: 名古屋
  • Year and Date: 2010-06-05
• [Presentation] Histories of atmospheric methane and its carbon and hydrogen isotopic ratios over the last 250 years obtained from an ice core and firn air
  • Author(s): T. Umezawa et al.
  • Organizer: EGU General Assembly 2012
  • Place of Presentation: Vienna, Austria
• [Presentation] Accurate age scale of the Dome Fuji ice core, Antarctica from O2/N2 ratio of trapped air
  • Author(s): K. Kawamura et al.
  • Organizer: EGU General Assembly 2012
  • Place of Presentation: Vienna, Austria
• [Presentation] Multi-millennial-scale climatic variations in Antarctica for the last eight glacial periods
  • Author(s): K. Kawamura et al.
  • Organizer: SCAR OSC
  • Place of Presentation: Portland, USA
• [Presentation] Climatic and atmospheric histories over the past 700,000 years from the Dome Fuji deep ice core, Antarctica
  • Author(s): K. Kawamura et al.
  • Organizer: G-COE 2012 Symposium
  • Place of Presentation: 仙台
  • Invited
• [Presentation] Accurately dated 700,000-year climatic record from the Dome Fuji ice core, Antarctica
  • Author(s): K. Kawamura et al.
  • Organizer: International Partnerships in Ice Core Sciences First Open Science Conference
  • Place of Presentation: Cote d'Azur, France
• [Presentation] Global methane simulation for the period 1910-2010 using atmospheric general circulation model based chemistry transport model
  • Author(s): A. Ghosh et al.
  • Organizer: Third International Symposium on the Arctic Research
  • Place of Presentation: 東京
• [Presentation] Reconstruction of past variations of δ13C and δD in atmospheric CH4 from its vertical distribution observed in NGRIP firn
  • Author(s): S. Sugawara et al.
  • Organizer: Third International Symposium on the Arctic Research
  • Place of Presentation: 東京
• [Presentation] Model resolution comparison for methane simulation in the Arctic region
  • Author(s): K. Ishijima et al.
  • Organizer: Third International Symposium on the Arctic Research
  • Place of Presentation: 東京
• [Book] 極地研ライブラリー,アイスコア.地球環境のタイムカプセル (2011)
  • Author(s): 川村賢二(共著)
  • Publisher: 成山堂書店
• [Remarks]
  • URL: http://tgr.geophys.tohoku.ac.jp/
• [Remarks] 東北大学大学院理学研究科 大気海洋変動観測研究センター 物質循環学分野
  • URL: http://tgr.geophys.tohoku.ac.jp/