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Evaluation of an impact of global warming based on spatiotemporal variations in the atmospheric consitituents corrected for diffusive separation

Research Project

Project/Area Number 19H01975
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 InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Ishidoya Shigeyuki  国立研究開発法人産業技術総合研究所, エネルギー・環境領域, 研究グループ長 (70374907)

Co-Investigator(Kenkyū-buntansha) 坪井 一寛  気象庁気象研究所, 気候・環境研究部, 主任研究官 (10553167)
村山 昌平  国立研究開発法人産業技術総合研究所, エネルギー・環境領域, 総括研究主幹 (30222433)
森本 真司  東北大学, 理学研究科, 教授 (30270424)
菅原 敏  宮城教育大学, 教育学部, 教授 (80282151)
石島 健太郎  気象庁気象研究所, 気候・環境研究部, 研究官 (90399494)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2021: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2020: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2019: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Keywords大気組成拡散分離 / 大気中酸素・アルゴン濃度 / 大気主成分同位体比 / 温暖化影響評価 / 大気主成分濃度・同位体比 / 分子拡散分離 / 大気循環 / 二酸化炭素循環 / 海洋貯熱量
Outline of Research at the Start

大気輸送、二酸化炭素循環、海洋貯熱量の長期変動に対する温暖化影響評価を目的として、大気の主成分(酸素、窒素、アルゴン)の濃度・同位体比の高精度観測を地表から成層圏に及ぶ広域で展開する。得られた観測結果について、独自の手法により大気組成の拡散分離を評価・補正することで、自由対流圏での大気主成分の精密な時空間変動と成層圏大気の重力分離が観測され、南北半球間の大気交換と成層圏循環への温暖化影響評価が可能となる。同時に二酸化炭素循環と海洋貯熱量の情報を持つ酸素とアルゴン濃度の広域代表データも取得できることから、包括的な温暖化影響評価が可能となる

Outline of Final Research Achievements

In order to evaluate an impact of global warming based on the observations of the atmospheric O2/N2 and Ar/N2 ratios and stable isotopic ratios of O2, N2 and Ar, it is needed to evaluate an effect of artificial/natural diffusive separation of the components. In the present study, we corrected an artificial diffusive separation on aircraft observations, and we succeeded to observe spatiotemporal variations in O2/N2 ratio from the surface to the upper troposphere. The observational results were compared with the simulated O2/N2 by using a 3-D transport model. Consequently, we evaluated the interhemispheric mixing of air and global CO2 budget. We also observed and simulated gravitational separation in the stratosphere, and we found the secular changes in the surface Ar/N2 ratio, which is expected to be used to estimate global ocean heat content, could be modified by the secular changes in gravitational separation.

Academic Significance and Societal Importance of the Research Achievements

大気中酸素濃度やアルゴン濃度を、炭素循環や温暖化の指標として用いるためには、存在量の6桁目の変動を計測する超高精度観測が必要になる。また、そのような微小変動の場合には、温度や圧力の勾配に応じて質量数に依存した拡散分離が生じ、その影響は特に航空機観測で顕著である。本研究では、拡散分離を定量的に評価し補正することで航空機による酸素濃度の高精度観測を実現し、南北半球間大気輸送や全球CO2収支の評価を行なった。また、地上と成層圏のアルゴン濃度の観測とシミュレーションから、超高精度観測には大気の重力分離の変動が影響し得ることを初めて報告した。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (30 results)

All 2022 2021 2020 2019

All Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 7 results) Presentation (22 results) (of which Int'l Joint Research: 8 results,  Invited: 1 results) Funded Workshop (1 results)

  • [Journal Article] Understanding Temporal Variations of Atmospheric Radon-222 around Japan Using Model Simulations2022

    • Author(s)
      ISHIJIMA Kentaro、TSUBOI Kazuhiro、MATSUEDA Hidekazu、TANAKA Yasumichi、MAKI Takashi、NAKAMURA Takashi、NIWA Yosuke、HIRAO Shigekazu
    • Journal Title

      Journal of the Meteorological Society of Japan. Ser. II

      Volume: 100 Issue: 2 Pages: 343-359

    • DOI

      10.2151/jmsj.2022-017

    • NAID

      130008127646

    • ISSN
      0026-1165, 2186-9057
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Spatiotemporal variations of the delta(O2/N2), CO2 and delta(APO) in the troposphere over the Western North Pacific2021

    • Author(s)
      Ishidoya Shigeyuki、Tsuboi Kazuhiro、Niwa Yosuke、Matsueda Hidekazu、Murayama Shohei、Ishijima Kentaro、Saito Kazuyuki
    • Journal Title

      Atmospheric Chemistry and Physics, discussions

      Volume: accepted Pages: 1-29

    • DOI

      10.5194/acp-2021-787

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Anthropogenic CO 2 Emissions Changes in an Urban Area of Tokyo, Japan, Due to the COVID‐19 Pandemic: A Case Study During the State of Emergency in April?May 20202021

    • Author(s)
      Sugawara, H., Ishidoya, S., Terao, Y., Takane, Y., Kikegawa, Y. and Nakajima, K.
    • Journal Title

      Geophysical Research Letters

      Volume: 48 Issue: 15 Pages: 1-10

    • DOI

      10.1029/2021gl092600

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Secular change in atmospheric Ar/N2 and its implications for ocean heat uptake and Brewer-Dobson circulation2021

    • Author(s)
      Ishidoya Shigeyuki、Sugawara Satoshi、Tohjima Yasunori、Goto Daisuke、Ishijima Kentaro、Niwa Yosuke、Aoki Nobuyuki、Murayama Shohei
    • Journal Title

      Atmospheric Chemistry and Physics

      Volume: 21 Issue: 2 Pages: 1357-1373

    • DOI

      10.5194/acp-21-1357-2021

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] O2 : CO2 exchange ratio for net turbulent flux observed in an urban area of Tokyo, Japan, and its application to an evaluation of anthropogenic CO2 emissions2020

    • Author(s)
      Ishidoya Shigeyuki, Sugawara Hirofumi, Terao Yukio, Kaneyasu Naoki, Aoki Nobuyuki, Tsuboi Kazuhiro, Kondo Hiroaki
    • Journal Title

      Atmospheric Chemistry and Physics

      Volume: 20 Issue: 9 Pages: 5293-5308

    • DOI

      10.5194/acp-20-5293-2020

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Three-dimensional simulation of stratospheric gravitational separation using the NIES global atmospheric tracer transport model2019

    • Author(s)
      Belikov, D., S. Sugawara, S. Ishidoya, F. Hasebe, S. Maksyutov, S. Aoki, S. Morimoto, and T. Nakazawa
    • Journal Title

      Atmospheric Chemistry and Physics

      Volume: 19 Issue: 8 Pages: 5349-5361

    • DOI

      10.5194/acp-19-5349-2019

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Consumption of atmospheric O2 in an Urban Area of Tokyo, Japan derived from continuous observations of O2 and CO2 concentrations and CO2 flux2019

    • Author(s)
      Ishidoya Shigeyuki、Sugawara Hirofumi、Terao Yukio、Kaneyasu Naoki、Aoki Nobuyuki、Tsuboi Kazuhiro、Kondo Hiroaki
    • Journal Title

      Atmospheric Chemistry and Physics Discussions

      Volume: -

    • DOI

      10.5194/acp-2019-652

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Preparation of O2/N2 dataset from the surface to the middle stratosphere around Japan traceable to NMIJ gravimetric scale2021

    • Author(s)
      石戸谷重之、森本真司、坪井一寛、菅原敏、後藤大輔、青木伸行、村山昌平、丹羽洋介、青木周司、松枝秀和、石島健太郎
    • Organizer
      日本地球惑星科学連合2021年大会
    • 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
      第26回大気化学討論会
    • 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
      2021年度大気球シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 大気観測に基づく代々木街区CO2排出量の起源別推定 ~緊急事態宣言に伴う排出量変動の検出~2021

    • Author(s)
      石戸谷重之、菅原広史、寺尾有希夫、髙根 雄也、亀卦川幸浩、中島虹、兼保直樹、青木伸行
    • Organizer
      日本気象学会2021年度秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] クライオサンプリングによる成層圏大気の長期観測と今後の展開2021

    • Author(s)
      菅原敏、青木周司、森本真司、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、吉田哲也
    • Organizer
      2021年度大気球シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] Seasonal variations in the atmospheric Ar/N2 ratio observed at ground-based stations in Japan and Antarctica and its application to an evaluation of the air-sea heat flux2020

    • Author(s)
      S. Ishidoya, K. Ishijima, S. Sugawara, Y. Niwa, Y. Tohjima, D. Goto, K. Tsuboi, S. Murayama, N. Aoki, T. Maki, Y. Tanaka and T. Nakamura
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Research activities for O2/N2 and Ar/N2 in National Institute of Advanced Industrial Science and Technology (AIST)2020

    • Author(s)
      S. Ishidoya, N. Aoki and co-authors
    • Organizer
      APO 2020 Virtual Workshop
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 綾里における酸素および二酸化炭素濃度の連続観測に基づく近傍工場のセメント生産の影響の評価2020

    • Author(s)
      石戸谷重之、近藤裕昭、坪井一寛、石島健太郎、松枝秀和、青木伸行、村山昌平、佐藤幸隆、幸田笹佳、雪田一弥、佐藤祥平、池田諒、洞口拓也
    • Organizer
      日本気象学会2020年度秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 大気中アルゴン・窒素比を用いた大気ポテンシャル酸素の変動要因の評価 -季節変動と緯度分布-2020

    • Author(s)
      石戸谷重之、遠嶋康徳、石島健太郎、菅原敏、丹羽洋介、後藤大輔、村山昌平、坪井一寛、青木伸行、中村貴
    • Organizer
      第25回大気化学討論会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Observations of elemental and isotopic ratios of atmospheric major components and its application to detect atmospheric circulation and ocean heat uptake changes2020

    • Author(s)
      S. Ishidoya, S. Sugawara, S. Morimoto, D. Goto, Y. Tohjima, K. Ishijima, D. Belikov, F. Hasebe, K.o Tsuboi, S. Murayama, N. Aoki, S. Aoki and T. Nakazawa
    • Organizer
      AGU fall meeting 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 日本周辺における 大気中ラドン濃度の短周期変動2020

    • Author(s)
      石島健太郎、坪井一寛、松枝秀和、田中泰宙、眞木貴史、中村貴、丹羽洋介
    • Organizer
      第25回大気化学討論会
    • 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] 飛騨高山冷温帯落葉広葉樹林で観測された炭素収支の年々変動および長期トレンド2020

    • Author(s)
      村山昌平、近藤裕昭、石戸谷重之、前田高尚、山本晋、三枝信子、村岡裕由
    • Organizer
      日本気象学会2020年度秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] C-130H輸送機により観測された北西太平洋上空における大気ポテンシャル酸素の季節および年々変動2019

    • Author(s)
      石戸谷重之、坪井一寛、丹羽洋介、村山昌平、松枝秀和、澤庸介、青木伸行、石島健太郎、古積健太郎、梅澤研太、雪田一弥、西田重晴、山本めぐみ
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Variations in Ar/N2 observed at Japanese air monitoring networks -its interpretation from viewpoints of changes in the ocean heat content and diffusive separation of the atmosphere-2019

    • Author(s)
      S. Ishidoyam S. Sugawara, Y. Tohjima, S. Murayama, D. Goto, K. Tsuboi and H. Matsueda
    • Organizer
      small APO workshop in Japan
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Seasonal and interannual variations of the APO over the Western North Pacific observed by using a cargo aircraft C-130H2019

    • Author(s)
      S. Ishidoya, K.Tsuboi, Y. Niwa, S. Murayama, H. Matsueda, Y. Sawa, N. Aoki, K. Ishijima, K. Kozumi, G. Umezawa, K. Yukita, S. Nishida and M. Yamamoto
    • Organizer
      small APO workshop in Japan
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Possible Ar/N2 variations caused by the molecular diffusive separation in stratosphere2019

    • Author(s)
      S. Sugawara and S.Ishidoya
    • Organizer
      small APO workshop in Japan
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 気象庁観測プラットフォームを用いた大気中酸素濃度の長期・広域観測2019

    • Author(s)
      石戸谷重之、坪井一寛、丹羽洋介、松枝秀和、村山昌平、青木伸行、近藤裕昭、石島健太郎、古積健太郎、梅澤研太、赤松澪、雪田一弥、西田重晴、佐藤祥平
    • Organizer
      日本気象学会2019年度秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 飛騨高山森林観測サイトにおける大気中温室効果気体濃度およびCO2安定同位体比の長期観測2019

    • Author(s)
      村山昌平、石戸谷重之、近藤裕昭、山本晋、宇佐美哲之、中澤高清、青木周司、森本真司、坪井一寛、松枝秀和、石島健太郎、村岡裕由
    • Organizer
      日本気象学会2019年度秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Long-term variations in the carbon budget and the atmospheric CO2 concentration detected from 26-year observation in a cool-temperate deciduous forest at Takayama2019

    • Author(s)
      S. Murayama, H. Kondo, S. Ishidoya, T. Maeda, S. Yamamoto, N. Saigusa and H. Muraoka
    • Organizer
      AsiaFlux Workshop 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 大気中アルゴン濃度の高精度観測に基づく海洋貯熱量および大気拡散分離の評価2019

    • Author(s)
      石戸谷重之、菅原敏、遠嶋康徳、後藤大輔、村山昌平、坪井一寛、丹羽洋介、青木伸行
    • Organizer
      第24回大気化学討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Analysis of atmospheric Radon-222 variations observed at JMA stations using model simulations of tagged Radon-222 tracers and Radon-222 age2019

    • Author(s)
      K. Ishijima, K. Tsuboi, H. Matsueda, Y. Tanaka, T. Maki, T. Nakamura, and Y. Niwa
    • Organizer
      AGU fall meeting 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Funded Workshop] small APO workshop in Japan(酸素濃度高精度観測等に関するワークショップ)2019

    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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