Pyrogenic iron: Source attribution of atmospheric bioaccessible iron supplied to the Pacific Ocean

• Project/Area Number: 20H04329
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 63010:Environmental dynamic analysis-related
• Research Institution: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: Ito Akinori 国立研究開発法人海洋研究開発機構, 地球環境部門(環境変動予測研究センター), 主任研究員 (00419144)
• Co-Investigator(Kenkyū-buntansha): 宮川 拓真 国立研究開発法人海洋研究開発機構, 地球環境部門(地球表層システム研究センター), 副主任研究員 (30707568)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Project Status: Completed (Fiscal Year 2022)
• Budget Amount: ¥15,730,000 (Direct Cost: ¥12,100,000、Indirect Cost: ¥3,630,000); Fiscal Year 2022: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2021: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2020: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
• Keywords: 人為起源鉄 / 自然起源鉄 / 海洋施肥 / 地球環境変化 / 鉱物ダスト / エアロゾル / 多元素 / 地球環境 / エアロゾル化学 / 森林火災 / エアロゾル化学モデル / 多元素同時測定 / 鉱物起源エアロゾル

Outline of Research at the Start

近年の東アジア・オセアニア域における産業活動の急速な発展により、大気から海洋へと供給される生物に利用可能な鉄が増加し、海洋生態系へ影響を与えることが懸念される。しかし、これまでの数値予測では、太平洋域において観測された水溶性鉄濃度を過小評価している。本課題では、太平洋域に着目し、大気から海洋表層へと人間活動に伴い供給される溶存鉄量がどのような要因で変動するのかを解明する。本課題では、発生源の異なるエアロゾルが海洋表層の溶存鉄供給量へ与える寄与率を算出する。このような取り組みから、国際研究プロジェクトをリードする学術的知見を創出する。

Outline of Final Research Achievements

We have statistically analyzed observational data from multiple oceans along with atmospheric data from Fukue Island, Goto Islands, Nagasaki Prefecture. The global atmospheric chemical transport model suggested that anthropogenic iron released to the atmosphere with sulfur dioxide via smelting processes plays an important role in supplying dissolved iron to the Southern Ocean due to a lack of effective air pollution countermeasures.
The results of the study reported here indicated that the emission of chemicals to the atmosphere in association with mineral resource development can cause health hazards while also providing nutrients to the marine environment. The study should contribute to future research on marine environmental conservation measures via international collaborations. The results also suggest that improvements are needed to the interactions between the biogeochemistry and climate in the Earth System Model.

Academic Significance and Societal Importance of the Research Achievements

今回の研究成果は、新たな知見をもたらすものだけではなく、製錬過程由来の溶存鉄は、エアロゾルの形で大気を通して輸送され、南大洋の海域に供給されている可能性を示した。
製錬過程で排出されるエアロゾルは、大気汚染防止の観点からは排出量を抑制することが重要であるが、その結果が漁獲量の低下をもたらし、深刻な食糧不足を助長するとしたら、そうした点も十分に考慮した上で対策を実施することが必要となる。

Research Products

• [Int'l Joint Research] University of California/NASA Goddard Space Flight Center/Cornell University(米国)
• [Int'l Joint Research] University of Leeds/University of Reading/University of Birmingham(英国)
• [Int'l Joint Research] NIOZ-Royal Netherlands Institute/Vrije Universiteit Amsterdam(オランダ)
• [Int'l Joint Research] Karlsruher Institut for Technologie/Leibniz Institute(ドイツ)
• [Int'l Joint Research] LISA/Univ. Lille/IPSL(フランス)
• [Int'l Joint Research]
• [Int'l Joint Research] Alfred Wegener Institute/Leibniz Institute/Institute of Meteorology(ドイツ)
• [Int'l Joint Research] University of Birmingham/University of East Anglia(英国)
• [Int'l Joint Research] University of California/NASA Goddard Space Flight Center/Cornell University(米国)
• [Int'l Joint Research] LSCE/IPSL(フランス)
• [Int'l Joint Research] BSC(スペイン)
• [Int'l Joint Research]
• [Int'l Joint Research] University of Tasmania(オーストラリア)
• [Int'l Joint Research] Ocean University of China(中国)
• [Int'l Joint Research] University of East Anglia(英国)
• [Journal Article] Aerosol Iron from Metal Production as a Secondary Source of Bioaccessible Iron (2023)
  • Author(s): Ito Akinori、Miyakawa Takuma
  • Journal Title: Environmental Science & Technology Volume: 57 Issue: 10 Pages: 4091-4100
  • DOI: 10.1021/acs.est.2c06472
  • Peer Reviewed / Open Access
• [Journal Article] Marine aerosol feedback on biogeochemical cycles and climate in the Anthropocene (2023)
  • Author(s): Ito Akinori、Miyazaki Yuzo、Taketani Fumikazu、Iwamoto Yoko、Kanaya Yugo、Jun Nishioka
  • Journal Title: Archives of Atmospheric Chemistry Research Volume: 47
  • Peer Reviewed / Open Access
• [Journal Article] A review of coarse mineral dust in the Earth system (2023)
  • Author(s): Adebiyi, A. A., J. Kok, B. J. Murray, C. L. Ryder, J.-B. W. Stuut, R. A. Kahn, P. Knippertz, P. Formenti, N. M. Mahowald, C. P. Garcia-Pando, M. Klose, A. Ansmann, B. H. Samset, A. Ito, Y. Balkanski, C. Di Biagio, M. N. Romanias, Y. Huang and J. Meng
  • Journal Title: Aeolian Research Volume: 60 Pages: 100849-100849
  • DOI: 10.1016/j.aeolia.2022.100849
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Role of dust and iron solubility in sulfate formation during the long-range transport in East Asia evidenced by 17O-excess signatures (2022)
  • Author(s): S. Itahashi, S. Hattori, A. Ito, Y. Sadanaga, N. Yoshida, A. Matsuki
  • Journal Title: Environmental Science and Technology Volume: 56 Issue: 19 Pages: 13634-13643
  • DOI: 10.1021/acs.est.2c03574
  • Peer Reviewed / Open Access
• [Journal Article] Competing and accelerating effects of anthropogenic nutrient inputs on climate-driven changes in ocean carbon and oxygen cycles (2022)
  • Author(s): Yamamoto Akitomo、Hajima Tomohiro、Yamazaki Dai、Noguchi Aita Maki、Ito Akinori、Kawamiya Michio
  • Journal Title: Science Advances Volume: 8 Issue: 26
  • DOI: 10.1126/sciadv.abl9207
  • Peer Reviewed / Open Access
• [Journal Article] Iron from coal combustion particles dissolves much faster than mineral dust under simulated atmospheric acidic conditions (2022)
  • Author(s): Baldo Clarissa、Ito Akinori、Krom Michael D.、Li Weijun、Jones Tim、Drake Nick、Ignatyev Konstantin、Davidson Nicholas、Shi Zongbo
  • Journal Title: Atmospheric Chemistry and Physics Volume: 22 Issue: 9 Pages: 6045-6066
  • DOI: 10.5194/acp-22-6045-2022
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Multiphase processes in the EC-Earth model and their relevance to the atmospheric oxalate, sulfate, and iron cycles (2022)
  • Author(s): Myriokefalitakis Stelios、Bergas-Masso Elisa、Goncalves-Ageitos Maria、Perez Garcia-Pando Carlos、van Noije Twan、Le Sager Philippe、Ito Akinori、Athanasopoulou Eleni、Nenes Athanasios、Kanakidou Maria、Krol Maarten C.、Gerasopoulos Evangelos
  • Journal Title: Geoscientific Model Development Volume: 15 Issue: 7 Pages: 3079-3120
  • DOI: 10.5194/gmd-15-3079-2022
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Earth, Wind, Fire, and Pollution: Aerosol Nutrient Sources and Impacts on Ocean Biogeochemistry (2022)
  • Author(s): Hamilton Douglas S.、Perron Morgane M.G.、Bond Tami C.、Bowie Andrew R.、Buchholz Rebecca R.、Guieu Cecile、Ito Akinori、Maenhaut Willy、Myriokefalitakis Stelios、Olgun Nazl?、Rathod Sagar D.、Schepanski Kerstin、Tagliabue Alessandro、Wagner Robert、Mahowald Natalie M.
  • Journal Title: Annual Review of Marine Science Volume: 14 Issue: 1 Pages: 303-330
  • DOI: 10.1146/annurev-marine-031921-013612
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Ocean fertilization by pyrogenic aerosol iron (2021)
  • Author(s): Ito Akinori、Ye Ying、Baldo Clarissa、Shi Zongbo
  • Journal Title: npj Climate and Atmospheric Science Volume: 4 Issue: 1 Pages: 1-20
  • DOI: 10.1038/s41612-021-00185-8
  • NAID: 130007977184
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Contribution of the world's main dust source regions to the global cycle of desert dust (2021)
  • Author(s): Kok Jasper F.、Adebiyi Adeyemi A.、Albani Samuel、Balkanski Yves、Checa-Garcia Ramiro、Chin Mian、Colarco Peter R.、Hamilton Douglas S.、Huang Yue、Ito Akinori、Klose Martina、Li Longlei、Mahowald Natalie M.、Miller Ron L.、Obiso Vincenzo、P?rez Garc?a-Pando Carlos、Rocha-Lima Adriana、Wan Jessica S.
  • Journal Title: Atmospheric Chemistry and Physics Volume: 21 Issue: 10 Pages: 8169-8193
  • DOI: 10.5194/acp-21-8169-2021
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Improved representation of the global dust cycle using observational constraints on dust properties and abundance (2021)
  • Author(s): Kok, J. F., Adebiyi, A. A., Albani, S., Balkanski, Y., Checa-Garcia, R., Chin, M., Colarco, P. R., Hamilton, D. S., Huang, Y., Ito, A., Klose, M., Leung, D. M., Li, L., Mahowald, N. M., Miller, R. L., Obiso, V., Perez Garcia-Pando, C., Rocha-Lima, A., Wan, J. S., and Whicker, C. A.
  • Journal Title: Atmospheric Chemistry and Physics Volume: 21 Issue: 10 Pages: 8127-8167
  • DOI: 10.5194/acp-21-8127-2021
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Changing atmospheric acidity as a modulator of nutrient deposition and ocean biogeochemistry (2021)
  • Author(s): Baker Alex R.、Kanakidou Maria、Nenes Athanasios、Myriokefalitakis Stelios、Croot Peter L.、Duce Robert A.、Gao Yuan、Guieu C?cile、Ito Akinori、Jickells Tim D.、Mahowald Natalie M.、Middag Rob、Perron Morgane M. G.、Sarin Manmohan M.、Shelley Rachel、Turner David R.
  • Journal Title: Science Advances Volume: 7 Issue: 28 Pages: 1-9
  • DOI: 10.1126/sciadv.abd8800
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Contribution of combustion Fe in marine aerosols over the northwestern Pacific estimated by Fe stable isotope ratios (2021)
  • Author(s): Kurisu Minako、Sakata Kohei、Uematsu Mitsuo、Ito Akinori、Takahashi Yoshio
  • Journal Title: Atmospheric Chemistry and Physics Volume: 21 Issue: 20 Pages: 16027-16050
  • DOI: 10.5194/acp-21-16027-2021
  • Peer Reviewed / Open Access
• [Journal Article] Less atmospheric radiative heating by dust due to the synergy of coarser size and aspherical shape (2021)
  • Author(s): Ito Akinori、Adebiyi Adeyemi A.、Huang Yue、Kok Jasper F.
  • Journal Title: Atmospheric Chemistry and Physics Volume: 21 Issue: 22 Pages: 16869-16891
  • DOI: 10.5194/acp-21-16869-2021
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] High Production of Soluble Iron promoted by Aerosol Acidification in Fog (2020)
  • Author(s): Jinhui Shi, Yang Guan, Akinori Ito, Huiwang Gao, Xiaohong Yao, Alex R. Baker, Daizhou Zhang
  • Journal Title: Geophysical Research Letters Volume: 47 Issue: 12
  • DOI: 10.1029/2019gl086124
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Evaluation of aerosol iron solubility over Australian coastal regions based on inverse modeling: implications of bushfires on bioaccessible iron concentrations in the Southern Hemisphere (2020)
  • Author(s): Ito Akinori、Perron Morgane M. G.、Proemse Bernadette C.、Strzelec Michal、Gault-Ringold Melanie、Boyd Philip W.、Bowie Andrew R.
  • Journal Title: Progress in Earth and Planetary Science Volume: 7 Issue: 1 Pages: 1-17
  • DOI: 10.1186/s40645-020-00357-9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] IMPACTモデルの福江島における微小エアロゾル元素組成・ブラックカーボンの高時間分解観測データを用いた評価 (2022)
  • Author(s): 伊藤彰記、宮川拓真
  • Organizer: 日本気象学会2022年度春季大会
• [Presentation] ベンガル湾におけるエアロゾル鉄溶解率を用いた人為起源鉄溶出モデルの評価 (2022)
  • Author(s): 伊藤彰記、Baldo Clarissa, Zongbo Shi
  • Organizer: 日本地球惑星科学連合2022年大会
• [Presentation] Evaluation of aerosol iron model using high-resolution measurements of trace metal (2022)
  • Author(s): Ito, A., T. Miyakawa
  • Organizer: Goldschmidt 2022
  • Int'l Joint Research
• [Presentation] 福江島における微小エアロゾル元素の高時間分解観測データとIMPACTモデルによる人為起源鉄の寄与率推定 (2022)
  • Author(s): 伊藤 彰記、宮川拓真
  • Organizer: 2022年度日本地球化学会年会
• [Presentation] IMPACTモデルの福江島とタスマニア島におけるエアロゾル溶存鉄の観測データを用いた評価 (2022)
  • Author(s): 伊藤 彰記、宮川拓真
  • Organizer: 2022年度大気環境学会年会
• [Presentation] Marine aerosol feedback on biogeochemical cycles and climate in the Pacific Ocean (2022)
  • Author(s): Ito, A., Y. Miyazaki, F. Taketani, Y. Iwamoto，Y. Kanaya and J. Nishioka
  • Organizer: 2022 iCACGP/IGAC Conference
  • Int'l Joint Research
• [Presentation] Aerosol bioaccessible iron supply from southern Africa to the Southern Ocean (2022)
  • Author(s): Ito, A., T. Miyakawa
  • Organizer: 2022 SOLAS Conference
  • Int'l Joint Research
• [Presentation] 生物利用可能な鉄の二次的供給源としての製錬過程からのエアロゾル鉄 (2022)
  • Author(s): 伊藤彰記、宮川拓真
  • Organizer: 第27回大気化学討論会
• [Presentation] Constraints on contribution of anthropogenic and lithogenic iron in aerosols using high-time-resolution measurements of trace elements (2022)
  • Author(s): Ito, A., T. Miyakawa
  • Organizer: 2022 AGU Fall Meeting
  • Int'l Joint Research
• [Presentation] 非球形粗大粒子がエアロゾル放射効果に与える影響 (2021)
  • Author(s): 伊藤彰記、Adeyemi A. Adebiyi、Yue Huang、Kok Jasper F.
  • Organizer: 日本地球惑星科学連合2021年大会
• [Presentation] Atmospheric radiative heating due to aspherical coarse dust (2021)
  • Author(s): Ito, A., Adeyemi A. Adebiyi, Yue Huang, and Jasper F. Kok
  • Organizer: Goldschmidt 2021
  • Int'l Joint Research
• [Presentation] 大気化学の将来構想：人新世における海洋エアロゾル・生物の気候フィードバック (2021)
  • Author(s): 伊藤彰記、宮﨑雄三、竹谷文一、岩本洋子、金谷有剛、西岡純
  • Organizer: 第26回大気化学討論会
• [Presentation] Effect of the synergy of coarser size and aspherical shape on dust radiative effect (2021)
  • Author(s): Ito, A., Adeyemi A. Adebiyi, Yue Huang, and Jasper F. Kok
  • Organizer: 2021 AGU Fall Meeting
  • Int'l Joint Research
• [Presentation] より粗い粒径と非球面形状の相乗効果のためダストによるより少ない大気の放射加熱 (2021)
  • Author(s): 伊藤彰記、Adeyemi A. Adebiyi、Yue Huang、Kok Jasper F.
  • Organizer: 第62回大気環境学会年
• [Presentation] 燃焼起源エアロゾル鉄による海洋施肥 (2021)
  • Author(s): 伊藤 彰記、Ying Ye、Clarissa Baldo、Zongbo Shi
  • Organizer: 2021年度日本地球化学会年会
• [Presentation] オーストラリア起源の鉱物ダスト発生量の過大評価がエアロゾル水溶性鉄濃度に与える影響 (2020)
  • Author(s): 伊藤 彰記
  • Organizer: JpGU-AGU2020
  • Int'l Joint Research
• [Presentation] オーストラリア沿岸地域における海洋地球研究船での大気エアロゾル観測データを用いた大気化学輸送モデル「IMPACT」の評価 (2020)
  • Author(s): 伊藤 彰記
  • Organizer: 第61回大気環境学会年会
• [Presentation] 燃焼起源エアロゾル鉄による海洋施肥 (2020)
  • Author(s): 伊藤 彰記
  • Organizer: 2020年度日本地球化学会年会
• [Presentation] Coarse dust aerosol radiative effect in the IMPACT model (2020)
  • Author(s): 伊藤 彰記
  • Organizer: AGU fall meeting 2020
  • Int'l Joint Research
• [Presentation] IMPACTモデルでの粗大ダストエアロゾル放射効果 (2020)
  • Author(s): 伊藤 彰記
  • Organizer: 第25回大気化学討論会
• [Presentation] High-temporal-resolution elemental characterization of fine-mode aerosols in springtime Asian outflow: Emission and removal characteristics, and comparison with model simulation (2020)
  • Author(s): 宮川 拓真
  • Organizer: JpGU-AGU2020
  • Int'l Joint Research
• [Presentation] 福江島における微小エアロゾル元素組成・ブラックカーボンの高時間分解観測：モデルによる人為起源鉄排出量の過小評価に関する知見 (2020)
  • Author(s): 宮川 拓真
  • Organizer: 第25回大気化学討論会
• [Remarks] 南半球の大気汚染対策不足が南大洋を富栄養化させている可能性
  • URL: https://www.jamstec.go.jp/j/about/press_release/20230301/
• [Remarks] 環境変動予測研究センターの伊藤 彰記 主任研究員らの論文が、裏表紙に選ばれました
  • URL: https://www.jamstec.go.jp/cema/j/