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Elucidation of global carbon cycle and its climate response

Research Project

Project/Area Number 18H01275
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 17020:Atmospheric and hydrospheric sciences-related
Research InstitutionTohoku University

Principal Investigator

青木 周司  東北大学, 理学研究科, 学術研究員 (00183129)

Co-Investigator(Kenkyū-buntansha) 森本 真司  東北大学, 理学研究科, 教授 (30270424)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥16,120,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥3,720,000)
Fiscal Year 2021: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2020: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2018: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Keywords二酸化炭素濃度 / 同位体比 / 酸素濃度 / モデル / 二酸化炭素 / 炭素同位体比 / 全球大気化学輸送モデル / 陸域生態系モデル / 全球3次元大気化学輸送モデル
Outline of Annual Research Achievements

1)二酸化炭素濃度やその同位体比および酸素濃度の広域観測(青木、森本、研究協力者)
日本-オセアニア間および日本-北米間を航行する定期コンテナ船上、北極ニーオルスン基地、北極チャーチル基地、南極昭和基地、日本とシベリア上空での航空機による系統的な大気採取による二酸化炭素濃度やその同位体比および酸素濃度の観測を継続的に展開するとともに、北極ニーオルスン基地、南極昭和基地での酸素や二酸化炭素濃度の連続観測を継続して実施し、広域にわたる時空間変動を明らかにした。
2)二酸化炭素濃度やその同位体比および酸素濃度観測データを用いたCO2 の収支解析(青木、森本)
二酸化炭素の収支解析を進めるため、二酸化炭素の濃度やその同位体比の観測を展開している米国スクリップス海洋研究所および海洋大気庁地球システム研究所、オーストラリア連邦科学産業機構、国立環境研究所から関連データの収集を継続し、本研究によるデータと併せて地球規模のデータセットを作成した。作成されたデータセットの詳細な解析を行い、地球規模における二酸化炭素の濃度やその同位体比の時空間変動を明らかにした。
3)3次元大気化学輸送モデルと生態系モデルを用いた地球規模二酸化炭素収支の推定(青木、森本、Patra、伊藤)
3次元大気化学輸送モデルに、本研究で作成したCO2濃度の地球規模データセットを用いてインバージョン解析を行い、全球および全球を84分割した各領域におけるCO2フラックスとその時間変化を推定する。さらに、陸上生態系モデルによって与えられる温室効果気体フラックスおよび二酸化炭素同位体組成を、大気化学輸送モデルによる推定結果と比較する。その結果を踏まえて、二酸化炭素フラックスの経年変動のメカニズムを明らかにした。

Research Progress Status

令和3年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和3年度が最終年度であるため、記入しない。

Report

(4 results)
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report

Research Products

(37 results)

All 2022 2021 2020 2019 2018

All Journal Article (13 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 12 results,  Open Access: 7 results) Presentation (23 results) (of which Int'l Joint Research: 2 results) Book (1 results)

  • [Journal Article] Shipboard observations of atmospheric oxygen in the Southern Ocean during the 2017-2018 austral summer2021

    • Author(s)
      Morimoto, S., S. Takebayashi, D. Goto, G.Hashida, and S. Aoki
    • Journal Title

      Polar Science,

      Volume: 29 Pages: 1-9

    • DOI

      10.1016/j.polar.2021.100691

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Antarctic surface temperature and elevation during the Last Glacial Maximum2021

    • Author(s)
      Buizert,C., Abe-Ouchi, A 39
    • Journal Title

      Science

      Volume: 372 Pages: 1097-1101

    • DOI

      10.1126/science.abd2897

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Composition of firn air at the North Greenland Ice Core Project (NGRIP) site2021

    • Author(s)
      Kawamura, K., T. Umezawa, S. Sugawara, S. Ishidoya, K. Ishijima, T. Saito, I Oyabu, S. Murayama, S. Morimoto, S. Aoki, and T. Nakazawa
    • Journal Title

      Polar Data Journal

      Volume: 5 Pages: 89-98

    • DOI

      10.20575/00000030

    • NAID

      120007143946

    • ISSN
      2432-6771
    • URL

      http://id.nii.ac.jp/1434/00000030/

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fractionation of O2/N2 and Ar/N2 in the Antarctic ice sheet during bubble formation and bubble-clathrate hydrate transition from precise gas measurements of the Dome Fuji ice core2021

    • Author(s)
      Oyabu, I., Kawamura, K., Uchida, T., Fujita, S., Kitamura, K., Hirabayashi, M., Aoki, S., Morimoto, S., Nakazawa, T., Severinghaus, J. P., and Morgan, J. D.
    • Journal Title

      The Cryosphere

      Volume: 15 Pages: 5529-5555

    • DOI

      10.5194/tc-15-5529-2021

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Global and regional CH4 emissions for 1995-2013 derived from atmospheric CH4, d13C-CH4 and dD-CH4 observations and a chemical transport model2020

    • Author(s)
      Fujita, R., S. Morimoto, S. Maksyutov, H.-S. Kim, M. Arshinov, S. Aoki, and T. Nakazawa
    • Journal Title

      Journal of Geophysical Research: Atmospheres

      Volume: - Pages: 1-23

    • DOI

      10.1029/2020jd032903

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Spatio-temporal variations of the atmospheric greenhouse gases and their sources and sinks in the Arctic region2020

    • Author(s)
      Morimoto, S., D. Goto, S. Murayama, R. Fujita, Y. Tohjima, S. Ishidoya, T. Machida, Y. Inai, P. K. Patra, S. Maksyutov, A. Ito, and S. Aoki
    • Journal Title

      Polar Science

      Volume: -

    • Related Report
      2020 Annual Research Report
  • [Journal Article] New technique for high-precision, simultaneous measurements of CH<sub>4</sub>, N<sub>2</sub>O and CO<sub>2</sub> concentrations; isotopic and elemental ratios of N<sub>2</sub>, O<sub>2</sub> and Ar; and total air content in ice cores by wet extraction2020

    • Author(s)
      Oyabu Ikumi、Kawamura Kenji、Kitamura Kyotaro、Dallmayr Remi、Kitamura Akihiro、Sawada Chikako、Severinghaus Jeffrey P.、Beaudette Ross、Orsi Ana?s、Sugawara Satoshi、Ishidoya Shigeyuki、Dahl-Jensen Dorthe、Goto-Azuma Kumiko、Aoki Shuji、Nakazawa Takakiyo
    • Journal Title

      Atmos. Meas. Tech.

      Volume: 13 Pages: 6703-6731

    • DOI

      10.5194/amt-13-6703-2020

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Implication of tropical lower stratospheric cooling in recent trends in tropical circulation and deep convective activity2019

    • Author(s)
      Kodera, K., N. Eguchi, R. Ueyama, Y. Kukoda, C. Kobayashi, Beatriz M. Funatsu, and Chantal Claud
    • Journal Title

      Atmos. Chem. Phys.

      Volume: 19 Pages: 1-13

    • DOI

      10.5194/acp-19-1-2019

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Seasonal characteristics of trace gas transport into the extratropical upper troposphere and lower stratosphere2019

    • Author(s)
      Inai, Y., T. Machida, H. Matsueda, Y. Sawa, K. Tsuboi, K. Katsumata, S. Morimoto, S. Aoki, and T.,Nakazawa
    • Journal Title

      Atmospheric Chemistry and Physics

      Volume: 19 Pages: 7073-7103

    • DOI

      10.5194/acp-19-7073-2019

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Temporal variations of the mole fraction, carbon and hydrogen isotope ratios of atmospheric methane in the Hudson Bay Lowlands, Canada.2018

    • Author(s)
      Fujita, R., S. Morimoto, T. Umezawa, K. Ishijima, P. K. Patra, D. E. J. Worthy, D. Goto, S. Aoki and T. Nakazawa
    • Journal Title

      Journal of Geophysical Research

      Volume: 123 Pages: 4695-4711

    • DOI

      10.1002/2017jd027972

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Balloon-borne tropospheric CO 2 observations over the equatorial eastern and western Pacific2018

    • Author(s)
      Inai Yoichi、Aoki Shuji、Honda Hideyuki、Furutani Hiroshi、Matsumi Yutaka、Ouchi Mai、Sugawara Satoshi、Hasebe Fumio、Uematsu Mitsuo、Fujiwara Masatomo
    • Journal Title

      Atmospheric Environment

      Volume: 184 Pages: 24-36

    • DOI

      10.1016/j.atmosenv.2018.04.016

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Coordinated Upper-troposphere-to-stratosphere Balloon Experiment in Biak (CUBE/Biak)2018

    • Author(s)
      Hasebe, F., S. Aoki, S. Morimoto, Y. Inai, T. Nakazawa, S. Sugawara, C. Ikeda, H. Honda, H. Yamazaki, Halimurrahman, N. Komala, F. Putri, A. Budiyono, M. Soedjarwo, S. Ishidoya, S. Toyoda, T. Shibata, M. Hayashi, N. Eguchi, N. Nishi, M. Fujiwara, S. Ogino, M. Shiotani, and T. Sugidachi
    • Journal Title

      B. Am. Meteor. Soc.

      Volume: 99 Pages: 1213-1230

    • DOI

      10.1175/bams-d-16-0289.1

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Gravitational separation of the stratospheric air over Syowa, Antarctica and its connection with meteorological fields2018

    • Author(s)
      Ishidoya, S., S. Sugawara, Y. Inai, S. Morimoto, H. Honda, C. Ikeda, Y. Tomikawa, S. Toyoda, D. Goto, S. Aoki, and T. Nakazawa
    • Journal Title

      Atmos Sci Lett.

      Volume: e857 Pages: 1-7

    • DOI

      10.1002/asl.857

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] Vertical profiles of halocarbons in the stratosphere over Japan in 2020 and implications for the “mean age” of stratospheric air2022

    • Author(s)
      Shoko Hikichi, Shinji Morimoto, Taku Umezawa, Takuya Saito, Sakae Toyoda, Satoshi Sugawara, Shigeyuki Ishidoya, Hideyuki Honda and Shuji Aoki
    • Organizer
      JpGU 2022
    • Related Report
      2021 Annual Research Report
  • [Presentation] 大気ポテンシャル酸素の季節変動に対する 南北半球間大気輸送の影響2021

    • Author(s)
      石戸谷重之, 丹羽洋介, 坪井一寛, 森本真司, 遠嶋康徳, 後藤大輔, 青木周司, 村山昌平, 青木伸行, 石島健太郎, 亀崎和輝, 松枝秀和
    • Organizer
      大気化学討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ractionation of O2/N2 and Ar/N2 in the Antarctic ice sheet from precise gas measurements of the Dome Fuji ice core -Constraining permeabilities of O2, N2 and Ar in the ice sheet with a simple diffusion model-2021

    • Author(s)
      Ikumi Oyabu, Kenji Kawamura, Tsutomu Uchida, Shuji Fujita, Kyotaro Kitamura, Motohiro Hirabayashi, Shuji Aoki, Shinji Morimoto, Takakiyo Nakazawa, Jeffrey P. Severinghaus, Jacob D. Morgan
    • Organizer
      The 12th symposium on Polar Science
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Variations of partial pressure of CO2 in the surface seawater2021

    • Author(s)
      Takayuki Matsuura, Shinji Morimoto, Gen Hashida, Tomomi Takamura, Shin-ichiro Nakaoka and Shuji Aoki
    • Organizer
      The 12th symposium on Polar Science
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ドームふじ氷床コアにおけるO2/N2とAr/N2の分別2021

    • Author(s)
      大藪幾美,川村賢二,内田努,藤田秀二,北村享太郎,平林幹啓,青木周司,森本真司,中澤高清
    • Organizer
      JSSI & JSSE Joint Conference, 2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] 成層圏大気重力分離と空気年齢の新たな応用;海洋貯熱量変動評価における重要性2021

    • Author(s)
      石戸谷重之,菅原敏,青木周司,森本真司,本田秀之,豊田栄, 遠嶋康徳,後藤大輔,石島健太郎,長谷部文雄,丹羽洋介,青木伸行, 村山昌平,飯島一征,吉田哲也
    • Organizer
      大気球シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] Temporal and spatial variations of the mole fraction, carbon and hydrogen isotope ratios of atmospheric methane in the western Pacific region2021

    • Author(s)
      Mahito Yasuda, Shinji Morimoto, Shuji Aoki, Ryo Fujita, and Taku Umezawa
    • Organizer
      JpGU 2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] In-situ and continuous observation of atmospheric N2O and CO concentrations at Syowa Station, Antarctica2020

    • Author(s)
      赤井 章吾、森本 真司、李 偉、後藤 大輔、青木 周司
    • Organizer
      JpGU-AGU Joint Mee ting 2020
    • Related Report
      2020 Annual Research Report
  • [Presentation] Studies on variations of atmospheric greenhouse gases in the ArCS project 2015-20192020

    • Author(s)
      Shinji Morimoto, Daisuke Goto, Shohei Murayama, Ryo Fujita, Yasunori Tohjim, Shigeyuki Ishidoya, Toshinobu Machida, Kazuhiro Tsuboi, Yoichi Inai, Prabir K. Patra, Shamil Maksyutov, Akihiko Ito and Shuji Aoki
    • Organizer
      極域科学シンポジウム2020
    • Related Report
      2020 Annual Research Report
  • [Presentation] マルチクロックトレーサーによる大気年代推定(B20-04 結果速報)2020

    • Author(s)
      菅原敏, 青木周司, 森本真司, 本田秀之, 豊田栄, 石戸谷重之, 後藤大輔, 梅澤拓,長谷部文雄、石島健太郎、飯嶋一征, 吉田哲也
    • Organizer
      大気球シンポジウム2020
    • Related Report
      2020 Annual Research Report
  • [Presentation] In-situ observation of atmospheric N2O and CO concentrations st Syowa Station, Antarctica2020

    • Author(s)
      Shogo Akai, Shinji Morimoto, Li Wei, Daisuke Goto, Shuji Aoki
    • Organizer
      JpGU-AGU Joint Mee ting 2020
    • Related Report
      2020 Annual Research Report
  • [Presentation] Atmospheric Gases and Isotopes as Passive Tracers of Climatic Processes2020

    • Author(s)
      Shigeyuki Ishidoya, Satoshi Sugawara, Shinji Morimoto, Daisuke Goto, Yasunori Tohjima, Kentaro Ishijima, Dmitry Belikov, Fumio Hasebe, Kazuhiro Tsuboi, Shohei Murayama, Nobuyuki Aoki, Shuji Aoki, Takakiyo Nakazawa
    • Organizer
      AGU fall meeting 2020
    • Related Report
      2020 Annual Research Report
  • [Presentation] Selection bias of quasi-fixed-point observations in the ExUTLS and its impact on the seasonal record2019

    • Author(s)
      Yoichi Inai, Toshinobu Machida, Hidekazu Matsueda, Yousuke Sawa, Kazuhiro Tsuboi, Keiichi Katsumata, Shinji Morimoto, Shuji Aoki, Takakiyo Nakazawa, Ryo Fujita
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Accurate chronology and climatic reconstruction around MIS 11 (interglacial period ~400,000 years ago) from Dome Fuji ice core, Antarctica2019

    • Author(s)
      Kenji Kawamura, Ikumi Oyabu, Shuji Aoki, Takakiyo Nakazawa, Ayako Abe-Ouchi, Fuyuki SAITO
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Global inverse analysis of CH4 fluxes using NICAM-TM 4D-Var2019

    • Author(s)
      Yosuke Niwa, Akihiko Ito, Toshinobu Machida, Motoki Sasakawa, Yasunori Tohjima, Yukio Terao, Taku Umezawa, Shinji Morimoto, Shuji Aoki, 他
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] レーザー分光法による大気中N2OおよびCO濃度連続観測システムの開発と南極・昭和基地における大気観測への応用2019

    • Author(s)
      赤井章吾、森本真司、李偉、後藤大輔、青木周司
    • Organizer
      日本気象学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] マルチクロックトレーサーによる大気年代の推定2019

    • Author(s)
      菅原敏, 青木周司, 森本真司, 稲飯洋一, 本田秀之, 豊田栄, 石戸谷重之, 後藤大輔, 梅澤拓, 長谷部文雄, 石島健太郎
    • Organizer
      大気球シンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] Development of a continuous measurement system for atmospheric N2O and CO concentrations and its application to in-situ observation at Syowa Station, Antarctica2019

    • Author(s)
      Shogo Akai, Shinji Morimoto, Li Wei, Daisuke Goto, Shuji Aok
    • Organizer
      極域科学シンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] 熱帯成層圏大気の重力分離とその数値シミュレーション2018

    • Author(s)
      菅原敏, 石戸谷重之, 青木周司,森本真司,中澤高清, 稲飯洋一,本田秀之,豊田栄, 長谷部文雄,池田忠作,後藤大輔
    • Organizer
      日本気象学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Measurements of δ13C and δD of atmospheric CH4 in the northern North Pacific and the Arctic Ocean and interpretation of Arctic CH4 sources2018

    • Author(s)
      R. Fujita S. Morimoto1, S. Ishidoya2, Y. Tohjima3, K. Ishijima4, S. Aoki1 and T. Nakazawa
    • Organizer
      IGAC
    • Related Report
      2018 Annual Research Report
  • [Presentation] Past variations of atmospheric methane and its isotope ratios reconstructed from firn air and ice core measurements2018

    • Author(s)
      Taku Umezawa, Satoshi Sugawara, Kenji Kawamura, Takanori Sugiyama, Prabir K. Patra, Kentaro Ishijima, Takuya Saito, Shinji Morimoto, Shuji Aoki and Takakiyo Nakazawa
    • Organizer
      IGAC
    • Related Report
      2018 Annual Research Report
  • [Presentation] Temporal variations of the mole fraction and carbon isotope ratio of atmospheric methane observed at Ny-Alesund, Svalbard and Syowa Station, Antarctica2018

    • Author(s)
      Shinji Morimoto, Ryo Fujita, Shuji Aoki, Daisuke Goto and Takakiyo Nakazawa
    • Organizer
      IGAC
    • Related Report
      2018 Annual Research Report
  • [Presentation] In-situ continuous observations of atmospheric O2/N2 ratio and CO2 concentration on-board “SHIRASE” in the Southern Ocean2018

    • Author(s)
      S. Takebayashi, S. Morimot1, D. Goto, G. Hashida, Y. Inai and S. Aoki
    • Organizer
      極域科学シンポジウム
    • Related Report
      2018 Annual Research Report
  • [Book] 南極読本2019

    • Author(s)
      阿保敏広、青木周司、ほか28名
    • Total Pages
      270
    • Publisher
      成山堂書店
    • ISBN
      9784425948123
    • Related Report
      2019 Annual Research Report

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Published: 2018-04-23   Modified: 2022-12-28  

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