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Umezawa Taku  梅澤 拓

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UMEZAWA Taku  梅澤 拓

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Researcher Number 00570508
Other IDs
Affiliation (Current) 2025: 東北大学, 理学研究科, 教授
2025: 国立研究開発法人国立環境研究所, 地球システム領域, 主任研究員
Affiliation (based on the past Project Information) *help 2023 – 2024: 国立研究開発法人国立環境研究所, 地球システム領域, 主任研究員
2020: 国立研究開発法人国立環境研究所, 地球システム領域, 主任研究員
2020: 国立研究開発法人国立環境研究所, 環境計測研究センター, 主任研究員
2017 – 2019: 国立研究開発法人国立環境研究所, 環境計測研究センター, 研究員
2012: 東北大学, 大学院・理学研究科, 特別教育研
Review Section/Research Field
Principal Investigator
Basic Section 63010:Environmental dynamic analysis-related / Environmental dynamic analysis
Except Principal Investigator
Medium-sized Section 63:Environmental analyses and evaluation and related fields / Basic Section 63010:Environmental dynamic analysis-related / Environmental dynamic analysis
Keywords
Principal Investigator
ハロカーボン / 空気年齢 / 成層圏 / 極域氷床 / 気候変動 / フィルン空気拡散モデル / 同位体比 / モデリング / 同位体 / フィルン / メタン … More
Except Principal Investigator
… More メタン / 成層圏大気の年齢 / 大気の平均年齢 / 大気の重力分離 / ブリューワードブンソン循環 / 成層圏大気サンプリング / ブリューワー・ドブソン循環 / 重力分離 / 成層圏大気年齢 / 大気観測 / 渦相関法 / 都市 / エタン / 大気輸送モデル / 循環 / 同位体比 / 濃度 / 物質循環 / 間氷期 / 氷期 / 氷床コア Less
  • Research Projects

    (5 results)
  • Research Products

    (17 results)
  • Co-Researchers

    (12 People)
  •  High-precision atmospheric measurements for estimating the spatial distribution, intensity, and location of methane emission hotspots in a mega city

    • Principal Investigator
      植山 雅仁
    • Project Period (FY)
      2024 – 2026
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 63010:Environmental dynamic analysis-related
    • Research Institution
      Osaka Metropolitan University
  •  多成分気体分析に基づく成層圏物質循環の長期変動の評価

    • Principal Investigator
      菅原 敏
    • Project Period (FY)
      2023 – 2027
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Review Section
      Medium-sized Section 63:Environmental analyses and evaluation and related fields
    • Research Institution
      Miyagi University of Education
  •  過去30年間で成層圏の大気循環は変化したか?:ハロカーボンの新規測定にもとづく推定Principal Investigator

    • Principal Investigator
      梅澤 拓
    • Project Period (FY)
      2023 – 2025
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 63010:Environmental dynamic analysis-related
    • Research Institution
      National Institute for Environmental Studies
  •  Accurate reconstruction of variations of methane isotopes over the last 50 years using halocarbon measurements of firn airPrincipal Investigator

    • Principal Investigator
      Umezawa Taku
    • Project Period (FY)
      2017 – 2020
    • Research Category
      Grant-in-Aid for Young Scientists (B)
    • Research Field
      Environmental dynamic analysis
    • Research Institution
      National Institute for Environmental Studies
  •  A study of global methane cycle over the last 130 kyrs based on Antarctic and Greenland deep ice cores

    • Principal Investigator
      NAKAZAWA Takakiyo
    • Project Period (FY)
      2010 – 2012
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Environmental dynamic analysis
    • Research Institution
      Tohoku University

All 2023 2018 2013 2012 2011 2010 Other

All Journal Article Presentation

  • [Journal Article] Carbon and hydrogen isotopic ratios of atmospheric methane in the upper troposphere over the western Pacific2012

    • 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
    • Data Source
      KAKENHI-PROJECT-22310003, KAKENHI-PROJECT-23310012
  • [Journal Article] Contributions of natural and anthropogenic sources to atmospheric methane variations over Western Siberia estimated from its carbon and hydrogen isotopes2012

    • 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
    • Data Source
      KAKENHI-PROJECT-22310003
  • [Journal Article] Carbon and hydrogen stable isotopic ratios of methane emitted from wetlands and wildfires in Alaska: aircraft observations and bonfire experiments2011

    • 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
    • Data Source
      KAKENHI-PROJECT-22310003
  • [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
    • Data Source
      KAKENHI-PROJECT-22310003
  • [Presentation] 改良型クライオサンプラー性能実証試験2023

    • Author(s)
      菅原敏, 森本真司, 青木周司, 本田秀之, 中澤高清, 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, 福家英之
    • Organizer
      2023年度大気球シンポジウム
    • Data Source
      KAKENHI-PROJECT-23H00513
  • [Presentation] 成層圏CO2のδ13Cの数値シミュレーション2023

    • Author(s)
      菅原敏, 石戸谷重之, 森本真司, 梅澤拓, 後藤大輔, 長谷部文雄, 豊田栄, 青木周司, 中澤高清, 本田秀之
    • Organizer
      第28回大気化学討論会
    • Data Source
      KAKENHI-PROJECT-23H00513
  • [Presentation] Past variations of atmospheric methane and its isotope ratios reconstructed from firn air and ice core measurements2018

    • Author(s)
      Taku Umezawa
    • Organizer
      the 2018 joint 14th iCACGP Quadrennial Symposium/15th IGAC Science Conference
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K18342
  • [Presentation] Reconstruction of past variations of δ^<13>C and .D in atmospheric CH_4 from its vertical distribution observed in NGRIP firn2013

    • 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
    • Data Source
      KAKENHI-PROJECT-22310003
  • [Presentation] Histories of atmospheric methane and its carbon and hydrogen isotopic ratios over the last 250 years obtained from an ice core and firn air2012

    • 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
    • Data Source
      KAKENHI-PROJECT-22310003
  • [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
    • Data Source
      KAKENHI-PROJECT-22310003
  • [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
    • Data Source
      KAKENHI-PROJECT-22310003
  • [Presentation] Observations of atmospheric CH_4 and its carbon and hydrogen stable isotopic ratios in the upper troposphere over the western Pacific2011

    • Author(s)
      T.Umezawa, et al
    • Organizer
      EGU General Assembly 2011
    • Place of Presentation
      Vienna
    • Year and Date
      2011-04-05
    • Data Source
      KAKENHI-PROJECT-22310003
  • [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
    • Data Source
      KAKENHI-PROJECT-22310003
  • [Presentation] Interannual variations of the atmospheric methane concentration and its stable isotopes observed at Ny Aalesund, Svalbard and Churchill, Canada2010

    • 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
    • Data Source
      KAKENHI-PROJECT-22310003
  • [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
    • Data Source
      KAKENHI-PROJECT-22310003
  • [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 isotopes2010

    • Author(s)
      T.Umezawa, et al
    • Organizer
      2010 AGU Fall Meeting
    • Place of Presentation
      San Francisco、米国
    • Year and Date
      2010-12-15
    • Data Source
      KAKENHI-PROJECT-22310003
  • [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
    • Data Source
      KAKENHI-PROJECT-22310003
  • 1.  MORIMOTO Shinji (30270424)
    # of Collaborated Projects: 3 results
    # of Collaborated Products: 9 results
  • 2.  菅原 敏 (80282151)
    # of Collaborated Projects: 2 results
    # of Collaborated Products: 2 results
  • 3.  NAKAZAWA Takakiyo (30108451)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 10 results
  • 4.  AOKI Shuji (00183129)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 10 results
  • 5.  KAWAMURA Kenji (90431478)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 2 results
  • 6.  植山 雅仁 (60508373)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 7.  寺尾 有希夫 (20469745)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 8.  後藤 大輔 (10626386)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 2 results
  • 9.  豊田 栄 (30313357)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 2 results
  • 10.  石戸谷 重之 (70374907)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 2 results
  • 11.  丹羽 洋介 (70588318)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 12.  石島 健太郎 (90399494)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 1 results

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