光吸収性エアロゾルの混合状態を解像した全球エアロゾルモデルの開発と気候影響評価

2020 Fiscal Year Annual Research Report

• Project/Area Number: 17H04709
• Research Institution: Nagoya University
• Principal Investigator: 松井 仁志 名古屋大学, 環境学研究科, 准教授 (50549508)
• Project Period (FY): 2017-04-01 – 2021-03-31
• Keywords: 気候変動 / 大気環境 / 大気化学 / エアロゾル / 光吸収性エアロゾル / 全球気候モデル / 混合状態

Outline of Annual Research Achievements

大気微粒子（エアロゾル）と放射・雲との相互作用（直接・間接効果）は、気候変動予測における最大の不確定要因の1つになっている。直接・間接効果の推定では、エアロゾルの粒径分布と光吸収性エアロゾルの混合状態の推定精度が鍵を握る。本課題では、この粒径・混合状態を十分に表現できる世界初の全球エアロゾルモデルを開発し、光吸収性エアロゾル各成分およびエアロゾル全体の直接・間接効果の推定精度を飛躍的に向上させることを目的とする。
令和2年度は、これまで開発してきた全球エアロゾルモデルCAM5-chem/ATRASを用い、ブラックカーボンの時空間分布と気候影響の不確定要因となるプロセスやパラメータを明らかにする研究を実施した。まず、積雲と混合相雲（水と氷が共存する雲）におけるエアロゾルの除去過程のモデル表現を改良した。この改良によって、モデル計算による熱帯域の上部対流圏でのブラックカーボンの質量濃度は約10倍減少し、北極域の下部・中部対流圏のブラックカーボン濃度は数倍程度増大した。これらの濃度の増減によって、熱帯域と北極域の両方の領域でのブラックカーボンの観測再現性は大きく改善し、モデル計算によるブラックカーボンの全球分布の推定精度が向上した。また、雲内での上昇流速度や最大過飽和度のモデル表現にも大きな不確定性があり、この不確定性の低減が、ブラックカーボンや他のエアロゾル成分の全球分布や北極域での濃度の推定において非常に重要になることを明らかにした。現状の雲内の上昇流の不確定性に伴うブラックカーボンの放射強制力の不確定性幅は、全球平均で0.31～0.43 W m-2、北極域では0.091～0.40 W m-2と推定された。

Research Progress Status

令和2年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和2年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] Cornell University/NOAA Earth System Research Laboratory(米国)
  • Country Name: U.S.A.
  • Counterpart Institution: Cornell University/NOAA Earth System Research Laboratory
• [Journal Article] Improved simulations of global black carbon distributions by modifying wet scavenging processes in convective and mixed-phase clouds (2021)
  • Author(s): Liu, M. and H. Matsui
  • Journal Title: Journal of Geophysical Research: Atmospheres Volume: 126 Pages: e2020JD033890
  • DOI: 10.1029/2020JD033890
  • Peer Reviewed / Open Access
• [Journal Article] Global-scale constraints on light-absorbing anthropogenic iron oxide aerosols (2021)
  • Author(s): Lamb, K. D., H. Matsui, J, M. Katich, A. E. Perring, J. R. Spackman, B. Weinzierl, M. Dollner, and J. P. Schwarz
  • Journal Title: npj Climate and Atmospheric Science Volume: 4 Pages: 15
  • DOI: 10.1038/s41612-021-00171-0
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Studies on Arctic aerosols and clouds during the ArCS project (2021)
  • Author(s): Koike, M., K. Goto-Azuma, Y. Kondo, H. Matsui, T. Mori, N. Moteki, S. Ohata, H. Okamoto, N. Oshima, K. Sato, T. Takano, Y. Tobo, J. Ukita, and A. Yoshida
  • Journal Title: Polar Science Volume: 27 Pages: 100621
  • DOI: 10.1016/j.polar.2020.100621
  • Peer Reviewed
• [Journal Article] Constraining the atmospheric limb of the plastic cycle (2021)
  • Author(s): Brahney, J., N. Mahowald, M. Prank, G. Cornwell, Z. Klimont, H. Matsui, and K. A. Prather
  • Journal Title: Proceedings of the National Academy of Sciences of the United States of America Volume: 118 Pages: e2020719118
  • DOI: 10.1073/pnas.2020719118
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Radiative forcings induced by the substantial changes in anthropogenic emissions over China during 2008-2016 (2021)
  • Author(s): Liu, M. and H. Matsui
  • Journal Title: Atmospheric Chemistry and Physics Volume: 21 Pages: 5965-5982
  • DOI: 10.5194/acp-21-5965-2021
  • Peer Reviewed / Open Access
• [Journal Article] Abundances and microphysical properties of light-absorbing iron oxide and black carbon aerosols over East Asia and the Arctic (2020)
  • Author(s): Yoshida, A., N. Moteki, S. Ohata, T. Mori, M. Koike, Y. Kondo, H. Matsui, N. Oshima, A. Takami, and K. Kita
  • Journal Title: Journal of Geophysical Research: Atmospheres Volume: 125 Pages: e2019JD032301
  • DOI: 10.1029/2019JD032301
  • Peer Reviewed / Open Access
• [Journal Article] Seasonal variation of wet deposition of black carbon in Arctic Alaska (2020)
  • Author(s): Mori, T., Y. Kondo, S. Ohata, Y. Zhao, P. R. Sinha, N. Oshima, H. Matsui, N. Moteki, and M. Koike
  • Journal Title: Journal of Geophysical Research: Atmospheres Volume: 125 Pages: e2019JD032240
  • DOI: 10.1029/2019JD032240
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] High sensitivity of Arctic black carbon radiative effects to sub-grid vertical velocity in aerosol activation (2020)
  • Author(s): Matsui, H. and N. Moteki
  • Journal Title: Geophysical Research Letters Volume: 47 Pages: e2020GL088978
  • DOI: 10.1029/2020GL088978
  • Peer Reviewed / Open Access
• [Journal Article] Recent (1980-to-2015) trends and variability in daily-to-interannual soluble iron deposition from dust, fire, and anthropogenic sources (2020)
  • Author(s): Hamilton, D. S., R. A. Scanza, S. D. Rathod, L. Li, T. C. Bond, J. Kok, H. Matsui, S. Tilmes, and N. M. Mahowald
  • Journal Title: Geophysical Research Letters Volume: 47 Pages: e2020GL089688
  • DOI: 10.1029/2020GL089688
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A global model-measurement evaluation of particle light scattering coefficients at elevated relative humidity (2020)
  • Author(s): Burgos, M. A., E. Andrews, G. Titos, A. Benedetti, H. Bian, V. Buchard, G. Curci, A. Kirkevag, H. Kokkola, A. Laakso, M. Lund, H. Matsui, G. Myhre, C. Randles, M. Schulz, T. van Noije, K. Zhang, L. Alados-Arboledas, U. Baltensperger, A. Jefferson, J. Sherman, J. Sun, E. Weingartner, and P. Zieger
  • Journal Title: Atmospheric Chemistry and Physics Volume: 20 Pages: 10231-10258
  • DOI: 10.5194/acp-20-10231-2020
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Black carbon absorption efficiency under preindustrial and present-day conditions simulated by a size- and mixing-state-resolved global aerosol model (2020)
  • Author(s): Matsui, H.
  • Journal Title: Journal of Geophysical Research: Atmospheres Volume: 125 Pages: e2019JD032316
  • DOI: 10.1029/2019JD032316
  • Peer Reviewed / Open Access
• [Journal Article] Seasonal trends of atmospheric ice nucleating particles over Tokyo (2020)
  • Author(s): Tobo, Y., J. Uetake, H. Matsui, N. Moteki, Y. Uji, Y. Iwamoto, K. Miura, and R. Misumi
  • Journal Title: Journal of Geophysical Research: Atmospheres Volume: 125 Pages: e2020JD033658
  • DOI: 10.1029/2020JD033658
  • Peer Reviewed / Open Access
• [Journal Article] Resolving aerosol mixing state increases accuracy of black carbon respiratory deposition estimates (2020)
  • Author(s): Ching, J., M. Kajino, and H. Matsui
  • Journal Title: One Earth Volume: 3 Pages: 763-776
  • DOI: 10.1016/j.oneear.2020.11.004
  • Peer Reviewed / Open Access
• [Journal Article] AeroCom phase III multi-model evaluation of the aerosol life cycle and optical properties using ground and space based remote sensing as well as surface in-situ observations (2020)
  • Author(s): Gliss, J., A. Mortier, M. Schulz, E. Andrews, Y. Balkanski, S. E. Bauer, A. M. K. Benedictow, H. Bian, R. Checa-Garcia, M. Chin, P. Ginoux, J. J. Griesfeller, A. Heckel, B. N. Holben, S. Kinne, Z. Kipling, A. Kirkevag, H. Kokkola, P. Laj, P. L. Sager. R. Levy, M. T. Lund, C. L. Myhre, H. Matsui, G. Myhre, et al.
  • Journal Title: Atmospheric Chemistry and Physics Volume: 21 Pages: 87-128
  • DOI: 10.5194/acp-21-87-2021
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] First global evaluation of the representation of water uptake within ten earth system models (2020)
  • Author(s): Burgos, M. A., E. Andrews, G. Titos, A. Benedetti, H. Bian, V. Buchard, G. Curci, A. Kirkevag, H. Kokkola, A. Laakso, M. Lund, H. Matsui, G. Myhre, C. Randles, M. Schulz, T. van Noije, K. Zhang, L. Alados-Arboledas, U. Baltensperger, A. Jefferson, J. Sherman, J. Sun, E. Weingartner, and P. Zieger
  • Organizer: EGU 2020 meeting
  • Int'l Joint Research
• [Presentation] Black carbon and inorganic aerosols in Arctic snowpack (2020)
  • Author(s): Mori, T., Y. Kondo, S. Ohata, Y. Zhao, P. R. Sinha, N. Oshima, H. Matsui, N. Moteki, and M. Koike
  • Organizer: JpGU-AGU Joint Meeting 2020
  • Int'l Joint Research
• [Presentation] 航空機を用いた東アジアおよび北極域における黒色炭素と酸化鉄エアロゾルの動態研究 (2020)
  • Author(s): 吉田淳、茂木信宏、大畑祥、森樹大、小池真、近藤豊、松井仁志、大島長、高見昭憲、北和之
  • Organizer: JpGU-AGU Joint Meeting 2020
• [Presentation] ニーオルスンに沈着した黒色炭素粒子濃度の季節変化 (2020)
  • Author(s): 森樹大、近藤豊、福田かおり、當房豊、東久美子、大畑祥、松井仁志、Sinha, P. R.、大島長、矢吹正教、茂木信宏、小池真
  • Organizer: 日本エアロゾル学会
• [Presentation] AeroCom III multi-model comparison: Update on biomass burning emission injection height experiment (BBEIH) (2020)
  • Author(s): Pan, X., R. Kahn, M. Chin, H. Matsui, T. Takemura, B. Xie, H. Zhang, and M. Val Martin
  • Organizer: 19th AeroCom workshop and 8th AeroSAT workshop
  • Int'l Joint Research
• [Presentation] Vertical profile: Are models getting better after all these years? (2020)
  • Author(s): Chin, M., H. Bian, S. Bauer, P. Ginoux, A. Kirkevag, H. Kokkola, T. Kucsera, H. Matsui, G. Myhre, D. Neubauer, T. Takemura, K. Tsigaridis
  • Organizer: 19th AeroCom workshop and 8th AeroSAT workshop
  • Int'l Joint Research
• [Presentation] First global overview on the representation of water uptake by ten global climate models (2020)
  • Author(s): Burgos, M. A., E. Andrews, G. Titos, A. Benedetti, H. Bian, V. Buchard, G. Curci, A. Kirkevag, H. Kokkola, A. Laakso, M. Lund, H. Matsui, G. Myhre, C. Randles, M. Schulz, T. van Noije, K. Zhang, L. Alados-Arboledas, U. Baltensperger, A. Jefferson, J. Sherman, J. Sun, E. Weingartner, and P. Zieger
  • Organizer: 19th AeroCom workshop and 8th AeroSAT workshop
  • Int'l Joint Research
• [Presentation] 北極域のブラックカーボンの放射強制力に対する雲内上昇流の扱いの重要性について (2020)
  • Author(s): 松井仁志、茂木信宏
  • Organizer: 第25回大気化学討論会
• [Presentation] Seasonal variation of wet deposition of black carbon at Ny-Alesund, Svalbard (2020)
  • Author(s): Mori, T., S. Ohata, K. Goto-Azuma, Y. Kondo, K. Fukuda, Y., Ogawa-Tsukagawa, N. Moteki, A. Yoshida, M. Koike, P. R. Sinha, N. Oshima, H. Matsui, Y. Tobo, M. Yabuki, and W. Aas
  • Organizer: The 11th Symposium on Polar Science
  • Int'l Joint Research
• [Presentation] Atmospheric radiative and oceanic biological productivity responses to anthropogenic combustion-iron emission in the 1850-2000 period (2020)
  • Author(s): Rathod, S., D. Hamilton, N. Mahowald, H. Matsui, J. Pierce, and T. Bond
  • Organizer: 2020 AGU Fall Meeting
  • Int'l Joint Research