Investigation of ice nucleating particles in a frequent occurrence region of Arctic mixed-phase clouds

• Project/Area Number: 16H06020
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: National Institute of Polar Research
• Principal Investigator: TOBO Yutaka 国立極地研究所, 研究教育系, 助教 (60572766)
• Project Period (FY): 2016-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥22,880,000 (Direct Cost: ¥17,600,000、Indirect Cost: ¥5,280,000); Fiscal Year 2018: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2017: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2016: ¥15,470,000 (Direct Cost: ¥11,900,000、Indirect Cost: ¥3,570,000)
• Keywords: 北極域 / エアロゾル－雲相互作用 / 氷晶核 / 気象学

Outline of Final Research Achievements

Arctic mixed-phase clouds composed of both supercooled liquid droplets and ice crystals occur frequently in the lower troposphere throughout the year and have large impacts on the Arctic weather, climate, and ecosystem. In this work, we have conducted filed measurements of ice nucleating particles (INPs) in Svalbard, which is known as a frequent occurrence region of Arctic mixed-phase clouds. Our measurements at the Zeppelin Observatory in Svalbard revealed that the INP number concentrations in summertime were roughly one order of magnitude higher than those in wintertime. Our results further suggested that the enhanced INP number concentrations in summertime were probably caused by the emission of high-latitude dusts having remarkably high ice nucleating ability from the Svalbard region and/or its surroundings.

Academic Significance and Societal Importance of the Research Achievements

夏季に北極陸域から発生するダストが、大気中での氷晶核の数濃度の大幅な増加をもたらしていることは、本研究によって初めて明らかなった成果である。今後、温暖化の進行によって積雪の融解や氷河の後退が進むと、北極陸域からのダストの発生量も増えるとも言われている。本研究で得られた成果は、現在、北極域で急速に進行しているとされる温暖化の影響によって、北極域上空でのエアロゾルや混相雲にどのような影響があらわれるのかを評価する上でも、重要な科学的知見となりうる。

Research Products

• [Int'l Joint Research] コロラド州立大学/コーネル大学(米国)
• [Int'l Joint Research] ノルウェー極地研究所/NILU(ノルウェー)
• [Int'l Joint Research] アルフレッド・ウェゲナー極地海洋研究所(ドイツ)
• [Int'l Joint Research] ストックホルム大学(スウェーデン)
• [Int'l Joint Research] CNR/ペルージャ大学(イタリア)
• [Int'l Joint Research]
• [Int'l Joint Research] Colorado State University(米国)
• [Int'l Joint Research] Norwegian Polar Institute/NILU(Norway)
• [Int'l Joint Research] ISAC/University of Perugia(Italy)
• [Int'l Joint Research] Colorado State University/West Texas A&M University(米国)
• [Int'l Joint Research] Karlsruhe Institute of Technology(Germany)
• [Int'l Joint Research] Norwegian Polar Institute/NILU(Norway)
• [Int'l Joint Research] ISAC/University of Perugia(Italy)
• [Journal Article] Glacially sourced dust as a potentially significant source of ice nucleating particles (2019)
  • Author(s): Tobo Yutaka、Adachi Kouji、DeMott Paul J.、Hill Thomas C. J.、Hamilton Douglas S.、Mahowald Natalie M.、Nagatsuka Naoko、Ohata Sho、Uetake Jun、Kondo Yutaka、Koike Makoto
  • Journal Title: Nature Geoscience Volume: 12 Issue: 4 Pages: 253-258
  • DOI: 10.1038/s41561-019-0314-x
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] 混相雲内でのエアロゾルの氷晶核としての役割 (2019)
  • Author(s): 當房 豊
  • Journal Title: 大気化学研究 Volume: 41
  • Peer Reviewed / Open Access
• [Journal Article] Seasonal changes of airborne bacterial communities over Tokyo and influence of local meteorology (2019)
  • Author(s): Uetake, J., Tobo, Y., Uji, Y., Hill, T. C. J., DeMott, P. J., Kreidenweis, S. M., Misumi, R.
  • Journal Title: Frontiers in Microbiology Volume: 10 Pages: 1572-1572
  • DOI: 10.3389/fmicb.2019.01572
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A comprehensive characterization of ice nucleation by three different types of cellulose particles immersed in water (2019)
  • Author(s): Hiranuma, N., Adachi, K., Bell, D. M., Belosi, F., Beydoun, H., Bhaduri, B., Bingemer, H., Budke, C., Clemen, H.-C., Conen, F. et al.
  • Journal Title: Atmospheric Chemistry and Physics Volume: 19 Issue: 7 Pages: 4823-4849
  • DOI: 10.5194/acp-19-4823-2019
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Ice nucleation by particles containing long-chain fatty acids of relevance to freezing by sea spray aerosols (2018)
  • Author(s): DeMott Paul J.、Mason Ryan H.、McCluskey Christina S.、Hill Thomas C. J.、Perkins Russell J.、Desyaterik Yury、Bertram Allan K.、Trueblood Jonathan?V.、Grassian Vicki H.、Qiu Yuqing、Molinero Valeria、Tobo Yutaka、Sultana Camille M.、Lee Christopher、Prather Kimberly A.
  • Journal Title: Environmental Science: Processes & Impacts Volume: 20 Issue: 11 Pages: 1559-1569
  • DOI: 10.1039/c8em00386f
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Characteristics of Droplet Size Distributions in Low-Level Stratiform Clouds Observed from Tokyo Skytree (2018)
  • Author(s): Misumi, R., Uji, Y., Tobo, Y., Miura, K., Uetake, J., Iwamoto, Y., Maesaka, T., Iwanami, K.
  • Journal Title: Journal of the Meteorological Society of Japan. Ser. II Volume: 96 Issue: 4 Pages: 405-413
  • DOI: 10.2151/jmsj.2018-040
  • NAID: 130007430311
  • ISSN: 0026-1165, 2186-9057
  • Peer Reviewed / Open Access
• [Journal Article] Comparative measurements of ambient atmospheric concentrations of ice nucleating particles using multiple immersion freezing methods and a continuous flow diffusion chamber (2017)
  • Author(s): P. J. DeMott, T. C. J. Hill, M. D. Petters, A. K. Bertram, Y. Tobo, et al.
  • Journal Title: Atmospheric Chemistry and Physics Volume: 17 Issue: 18 Pages: 11227-11245
  • DOI: 10.5194/acp-17-11227-2017
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] An improved approach for measuring immersion freezing in large droplets over a wide temperature range (2016)
  • Author(s): Tobo, Y.
  • Journal Title: Scientific Reports Volume: 6 Issue: 1 Pages: 32930-32930
  • DOI: 10.1038/srep32930
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Sources of organic ice nucleating particles in soils (2016)
  • Author(s): Hill, T. C. J., DeMott, P. J., Tobo, Y., Frohlich-Nowoisky, J., Moffett, B. F., Franc, G. D. & Kreidenweis, S. M.
  • Journal Title: Atmospheric Chemistry and Physics Volume: 16 Issue: 11 Pages: 7195-7211
  • DOI: 10.5194/acp-16-7195-2016
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] 【総説】北極域での雲凝結核・氷晶核の研究 (2020)
  • Author(s): 當房 豊
  • Organizer: 2019年度 エアロゾル・雲・降水の相互作用に関する研究集会
• [Presentation] Variation of atmospheric INP number concentrations during continuous monitoring on Tokyo Skytree in 2016/2017 (2020)
  • Author(s): Tobo, Y., Uetake, J., Matsui, H., Uji, Y., Iwamoto, Y., Miura, K., Misumi, R.
  • Organizer: 3rd Atmospheric Ice Nucleation Conference
  • Int'l Joint Research
• [Presentation] 黄砂飛来時における東京スカイツリーでの氷晶核の観測：2017年5月の事例 (2019)
  • Author(s): 當房 豊、植竹 淳、松井 仁志、宇治 靖、岩本 洋子、森 樹大、三浦 和彦、三隅 良平
  • Organizer: 日本気象学会 2019年度秋季大会
• [Presentation] High-latitude dust and its potential impact on atmospheric ice nucleation (2019)
  • Author(s): Tobo, Y.
  • Organizer: 3rd PACES Open Science Meeting
  • Int'l Joint Research
• [Presentation] 大気中のダスト・微生物とその雲微物理への影響 (2019)
  • Author(s): 當房 豊
  • Organizer: ニーオルスン新基地を利用した研究の新展開に関する研究集会
• [Presentation] Routine measurements of atmospheric ice nucleating particles on Tokyo Skytree: Preliminary results in 2016/2017 (2019)
  • Author(s): Tobo, Y., Uetake, J., Uji, Y., Iwamoto, Y., Mori, T., Miura, K., Misumi, R.
  • Organizer: 11th Asian Aerosol Conference
  • Int'l Joint Research
• [Presentation] 2016～2017年の東京スカイツリーでの氷晶核の観測 (2019)
  • Author(s): 當房 豊、植竹 淳、宇治 靖、岩本 洋子、森 樹大、三浦 和彦、三隅 良平
  • Organizer: 東京理科大学 総合研究院 大気科学研究部門 第3回成果報告会
• [Presentation] 氷晶核として働く微生物に関する研究 (2019)
  • Author(s): 當房 豊
  • Organizer: 2018年度 極域大気～アイスコア中の微生物に関する研究集会
• [Presentation] 夏季のスヴァールバル諸島での氷晶核に関する調査研究 (2019)
  • Author(s): 當房 豊、足立 光司、DeMott P. J.、Hill T. C. J.、Hamilton D. S.、Mahowald N. M.、永塚 尚子、大畑 祥、植竹 淳、近藤 豊、小池 真
  • Organizer: 2018年度 エアロゾル・雲・降水の相互作用に関する研究集会
• [Presentation] 北極圏の海洋および陸域の上空での氷晶核の調査研究 (2019)
  • Author(s): 當房 豊
  • Organizer: ミニ研究集会「大気-海洋境界層における大気物質の役割」
• [Presentation] 黒い微粒子の氷核活性の評価 (2018)
  • Author(s): 當房 豊、茂木 信宏、足立 光司、大畑 祥、吉田 淳、近藤 豊、小池 真
  • Organizer: 日本気象学会 2018年度秋季大会 2018年11月1日
• [Presentation] Recent progress and perspectives in ice nucleation studies at Ny-Alesund, Svalbard (2018)
  • Author(s): Tobo, Y., Adachi, K., DeMott, P. J., Hill, T. C. J., Hamilton, D. S., Mahowald, N. M., Nagatsuka, N., Ohata, S., Uetake, J., Kondo, Y., Koike, M., Mazzola, M., Cappelletti, D.
  • Organizer: Ny-Alesund Atmosphere Flagship open workshop
  • Int'l Joint Research
• [Presentation] Evaluation of immersion freezing properties of dark-colored particles under mixed-phase cloud conditions (2018)
  • Author(s): Tobo, Y., Moteki, N., Adachi, K., Ohata, S., Yoshida, A., Koike, M., Kondo, Y.
  • Organizer: 10th International Aerosol Conference
  • Int'l Joint Research
• [Presentation] Tobo, Y. (2018)
  • Author(s): Potential influence of aerosols on ice nucleation in mixed-phase clouds
  • Organizer: JpGU Meeting
  • Int'l Joint Research / Invited
• [Presentation] ニーオルスンにおけるエアロゾルの氷核活性に関する調査研究 (2018)
  • Author(s): 當房 豊
  • Organizer: 平成30年度 ArCSプロジェクト全体会合
• [Presentation] スバールバル諸島での氷晶核の観測に関する報告と展望 (2018)
  • Author(s): 當房 豊
  • Organizer: 2017年度 エアロゾル・雲・降水の相互作用に関する研究集会
• [Presentation] Seasonal differences in the characteristics of ice nucleating particles on Mt. Zeppelin in Ny-Ålesund, Svalbard: A case study in 2016/2017 (2018)
  • Author(s): Tobo, Y., Adachi, K., Nagatsuka, N., DeMott, P. J., Hill, T. C. J., Ohata, S., Kondo, Y. & Koike, M.
  • Organizer: 5th International Symposium on Arctic Research (ISAR-5)
  • Int'l Joint Research
• [Presentation] Introduction of the ArcticCARE-2017 campaign (2017)
  • Author(s): Tobo, Y., Koike, M., Moteki, N., Ohata, S., Mori, T., Yoshida, A., Shiobara, M., Uetake, J., Hiranuma, N. & Pantazi, M.
  • Organizer: Atmosphere Flagship On Site Meeting
  • Place of Presentation: Ny-Alesund, Svalbard （Norway）
  • Year and Date: 2017-03-22
  • Int'l Joint Research
• [Presentation] 大気中の氷晶核数濃度のモニタリング体制の構築 (2017)
  • Author(s): 當房 豊
  • Organizer: 2016年度 エアロゾル・雲・降水の相互作用に関する研究集会
  • Place of Presentation: 国立極地研究所（東京・立川）
  • Year and Date: 2017-02-16
• [Presentation] Routine measurements of atmospheric ice nucleating particles on the Tokyo Skytree (2017)
  • Author(s): Tobo, Y., Uetake, J., Uji, Y., Iwamoto, Y., Miura, K. & Misumi, R.
  • Organizer: Atmospheric Ice Nucleation Conference - Focus Meeting 9
  • Place of Presentation: Leeds (UK)
  • Year and Date: 2017-01-16
  • Int'l Joint Research
• [Presentation] Enhanced concentrations of ice nucleating particles in Svalbard during summer: Possible linkage with local dust emissions (2017)
  • Author(s): Tobo, Y., Adachi, K., Nagatsuka, N., DeMott, P. J., Hill, T. C. J., Ohata, S., Kondo, Y. & Koike, M.
  • Organizer: AGU Fall Meeting 2017
  • Int'l Joint Research
• [Presentation] A novel and simple approach for measuring ice nucleating particles in the atmosphere (2017)
  • Author(s): Tobo, Y. & Murata, K.
  • Organizer: 8th Symposium on Polar Science
  • Int'l Joint Research
• [Presentation] スバールバル諸島・ニーオルスンでの氷晶核の計測：2016年7月の事例 (2017)
  • Author(s): 當房 豊・足立 光司・DeMott, P. J.・Hill, T. C. J.・大畑 祥・近藤 豊・小池 真
  • Organizer: 日本気象学会 2017年度秋季大会
• [Presentation] 夏季のスバールバル諸島・ニーオルスンにおける氷晶核の計測 (2017)
  • Author(s): 當房 豊・足立 光司・植竹 淳・Hill, T. C. J.・DeMott, P. J.・小池 真
  • Organizer: 第34回エアロゾル科学・技術研究討論会
• [Presentation] Challenges in understanding aerosol-cloud interactions in Svalbard (2017)
  • Author(s): Tobo, Y. & Koike, M.
  • Organizer: JSPS Japan-Norway Symposium 'Past, Present, and Future of the Arctic and Antarctic'
  • Int'l Joint Research
• [Presentation] 東京スカイツリーで捕集した大気エアロゾルの氷晶核能 (2016)
  • Author(s): 當房 豊
  • Organizer: 第１回 東京スカイツリー大気観測データ検討会
  • Place of Presentation: 東京理科大学（東京・神楽坂）
  • Year and Date: 2016-12-21
• [Presentation] Intensive measurements of ice nucleating particles at Ny-Alesund, Svalbard, in summer 2016 (2016)
  • Author(s): Tobo, Y. & Uetake, J.
  • Organizer: 7th Symposium on Polar Science
  • Place of Presentation: Tachikawa, Tokyo (Japan)
  • Year and Date: 2016-11-29
  • Int'l Joint Research
• [Presentation] 鉱物エアロゾル粒子の表面状態の変化：吸湿性や氷核活性に与えうる影響 (2016)
  • Author(s): 當房 豊
  • Organizer: 気候物質科学セミナー
  • Place of Presentation: 東京大学（東京・本郷）
  • Year and Date: 2016-11-18
  • Invited
• [Presentation] CRAFTを用いた氷晶核の数濃度の計測：コロラド高原での事例 (2016)
  • Author(s): 當房 豊・植竹 淳・Suski, K. J.・Schill, G. P.・Hill, T. C. J.・DeMott, P. J.
  • Organizer: 日本気象学会 2016年度秋季大会
  • Place of Presentation: 名古屋大学（愛知・名古屋）
  • Year and Date: 2016-10-26
• [Presentation] Evaluation of the immersion freezing behaviors of dust collected in northwest Greenland (2016)
  • Author(s): Tobo, Y., Nagatsuka, N. & Uetake, J.
  • Organizer: 17th International Conference on Clouds & Precipitation
  • Place of Presentation: Manchester (UK)
  • Year and Date: 2016-07-25
  • Int'l Joint Research
• [Remarks] http://researchmap.jp/yutaka.tobo/
• [Remarks] Researchmap
  • URL: http://researchmap.jp/yutaka.tobo/
• [Remarks] ResearcherID
  • URL: http://www.researcherid.com/rid/D-9158-2013
• [Remarks] ResearchGate
  • URL: https://www.researchgate.net/profile/Yutaka_Tobo