Development and evaluation of a simple but powerful method for measuring atmospheric ice nucleating particles

• Project/Area Number: 15K13570
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• 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)
• Co-Investigator(Kenkyū-buntansha): 塩原 匡貴 国立極地研究所, 国際北極環境研究センター, 准教授 (60291887)
• Co-Investigator(Renkei-kenkyūsha): HIRASAWA Naohiko 国立極地研究所, 研究教育系, 助教 (10270422) ; KOBAYASHI Hiroshi 山梨大学, 大学院総合研究部, 准教授 (20313786) ; TAJIRI Takuya 気象庁気象研究所, 予報研究部, 主任研究官 (40414510)
• Research Collaborator: HIRANUMA Naruki West Texas A&M University, Department of Life, Earth and Environmental Sciences, Assistant Professor ; DEMOTT Paul J. Colorado State University, Department of Atmospheric Science, Senior Research Scientist
• Project Period (FY): 2015-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 気象学 / エアロゾル－雲相互作用 / 氷晶核 / エアロゾル

Outline of Final Research Achievements

It is expected that the existence of ice nucleating particles (INPs) in the atmosphere has a significant impact on ice nucleation in clouds. However, because of cost issues and technical difficulties, the information on atmospheric INPs has been lacking. Here, we have tried to develop a new cold-stage-based droplet freezing technique. As a result, we could establish a new experimental system capable of measuring ice nucleating particles over a wide temperature range (about -30°C to 0°C).

Research Products

• [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)
• [Int'l Joint Research] コロラド州立大学(米国)
• [Int'l Joint Research] カールスルーエ工科大学(ドイツ)
• [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
• [Journal Article] Sources of organic ice nucleating particles in soils (2016)
  • Author(s): Hill, T. C. J., DeMott, P. J., Tobo, Y., Froehlich-Nowoisky, J., Moffett, B. F., Franc, G. D., Kreidenweis, S. M.
  • Journal Title: Atmospheric Chemistry and Physics Discussions Volume: -
  • DOI: 10.5194/acp-2016-1
  • Open Access / 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] 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
• [Presentation] Evaluation of the immerison 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: University of Manchester (Manchester, UK)
  • Year and Date: 2016-07-25
  • Int'l Joint Research
• [Presentation] 土壌起源の有機エアロゾルとその氷晶核としての役割 (2016)
  • Author(s): 當房豊
  • Organizer: 有機エアロゾルに関するワークショップ：大気におけるその動態・性状・役割（第2回）
  • Place of Presentation: 秋葉原UDX（秋葉原）
  • Year and Date: 2016-03-01
  • Invited
• [Presentation] 氷晶核濃度のパラメタリゼーション化に関する取り組み (2016)
  • Author(s): 當房豊
  • Organizer: 極地研・研究集会「エアロゾル－雲相互作用について語らう会」
  • Place of Presentation: 国立極地研究所（立川）
  • Year and Date: 2016-02-26
• [Presentation] Potential importance of biogenic ice nucleating particles (2016)
  • Author(s): Tobo, Y.
  • Organizer: DEGCR-Atmosphere Seminar (JAMSTEC)
  • Place of Presentation: Yokohama Institute for Earth Sciences (Yokohama, Kanagawa, Japan)
  • Year and Date: 2016-01-20
  • Invited
• [Presentation] バイオエアロゾル・氷晶核の調査研究：ロッキー山脈の森林地帯での事例 (2015)
  • Author(s): 當房豊
  • Organizer: 第九回「放射性物質の大気沈着・拡散過程および陸面相互作用の理解」
  • Place of Presentation: 気象研究所（つくば）
  • Year and Date: 2015-12-09
  • Invited
• [Presentation] Investigation of the ice nucleation properties of dust collected in northwest Greenland (2015)
  • Author(s): Tobo, Y., Nagatsuka, N., Uetake, J.
  • Organizer: 6th Symposium on Polar Science
  • Place of Presentation: National Institute of Polar Research (Tachikawa, Tokyo, Japan)
  • Year and Date: 2015-11-16
  • Int'l Joint Research
• [Presentation] コールドプレート実験に基づいた氷晶核計測法の評価 (2015)
  • Author(s): 當房豊
  • Organizer: 日本気象学会 2015年度秋季大会
  • Place of Presentation: 京都テルサ（京都）
  • Year and Date: 2015-10-27
• [Presentation] 氷形成を誘発するバイオエアロゾル粒子 (2015)
  • Author(s): 當房豊
  • Organizer: 雪氷化学分科会
  • Place of Presentation: 信州大学（松本）
  • Year and Date: 2015-09-14
  • Invited
• [Presentation] Can soil organic matter particles affect atmospheric ice nucleation? (2015)
  • Author(s): Tobo, Y., Hill, T. C. J., DeMott, P. J.
  • Organizer: 9th Asia Aerosol Conference
  • Place of Presentation: Kanazawa Tokyu Hotel (Kanazawa, Ishikawa, Japan)
  • Year and Date: 2015-06-27
  • Int'l Joint Research
• [Presentation] Challenges in understanding the impact of aerosols on atmospheric ice nucleation (2015)
  • Author(s): Tobo, Y.
  • Organizer: Aerosol analyses by early career researcher in Asia "Pre-event for 9th Asian Aerosol Conference"
  • Place of Presentation: Korinbo Plaza Hall (Kanazawa, Ishikawa, Japan)
  • Year and Date: 2015-06-23
  • Int'l Joint Research / Invited
• [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