Past atmospheric characteristics of glacial and interglacial periods reconstructed from aerosol compositions preserved in bipolar ice cores.

• Project/Area Number: 23681001
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Environmental dynamic analysis
• Research Institution: Hokkaido University
• Principal Investigator: IIZUKA Yoshinori 北海道大学, 低温科学研究所, 助教 (40370043)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥18,980,000 (Direct Cost: ¥14,600,000、Indirect Cost: ¥4,380,000); Fiscal Year 2013: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000); Fiscal Year 2012: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000); Fiscal Year 2011: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
• Keywords: アイスコア / 古環境復元 / エアロゾル / 南極 / 北極 / 硫酸塩 / グリーンランド / 国際研究者交流スウェーデン / 氷床コア / 昇華法 / 国際研究者交流(スウェーデン) / 古環境変動

Outline of Final Research Achievements

Sulphate aerosols, particularly micron-sized particles of sulphate salt and sulphate-adhered dust, can act as cloud condensation nuclei, leading to increased solar scattering. Evidence for sulphate-climate coupling in the current era has not been found, but may be revealed in the long-term sulphate record from polar ice cores. Melted ice-core samples have previously provided only sulphate-ion concentrations, which may be due to sulphuric acid. We present profiles of sulphate-salt fluxes over the past 300,000 years from the Dome Fuji ice core in inland Antarctica. Results show the sulphate-salt flux correlates inversely with temperature, suggesting a climatic coupling between particulate sulphur and temperature. Although based on a model with serious uncertainties when applied to the ice core record, this analysis indicates that the glacial-to-interglacial decrease in sulphate would lessen the aerosol indirect effects on cloud albedo, leading to an Antarctic warming of 0.1 to 5.2 K.

Research Products

• [Journal Article] Effect of accumulation rate on water stable isotopes of near-surface snow in inland Antarctica (2014)
  • Author(s): Hoshina, Y., K. Fujita, F. Nakazawa, Y. Iizuka, T. Miyake, M. Hirabayashi, T. Kuramoto, S. Fujita, and H. Motoyama
  • Journal Title: J. Geophys. Res. Atmos. Volume: 119 Issue: 1 Pages: 274-283
  • DOI: 10.1002/2013jd020771
  • Peer Reviewed
• [Journal Article] Potassium alum and aluminum sulfate micro-inclusions in polar ice from Dome Fuji, East Antarctica (2013)
  • Author(s): Hiroshi Ohno, Yoshinori Iizuka, Shinichiro Horikawa, Toshimitsu Sakurai, Takeo Hondoh, Hideaki Motoyama
  • Journal Title: Polar Science Volume: 8 Pages: 1-9
  • NAID: 110009687662
  • Peer Reviewed
• [Journal Article] Sulphate and chloride aerosols during Holocene and last glacial periods preserved in the Talos Dome Ice Core, a peripheral region of Antarctica (2013)
  • Author(s): Yoshinori Iizuka, Barbara Delmonte, Ikumi Oyabu, Torbjörn Karlin, Valter Maggi, Samuel Albani, Manabu Fukui, Takeo Hondoh and Margareta Hansson
  • Journal Title: Tellus B Volume: 65 Pages: 20197-20197
  • Peer Reviewed
• [Journal Article] Sulphate-climate coupling over the past 300,000 years in inland Antarctica (2012)
  • Author(s): Iizuka, Y., R. Uemura, H. Motoyama, T. Suzuki, T. Miyake, M. Hirabayashi, T. Hondoh
  • Journal Title: Nature Volume: 490 Issue: 7418 Pages: 81-84
  • DOI: 10.1038/nature11359
  • NAID: 120005228621
  • Peer Reviewed
• [Journal Article] Eemian interglacial reconstructed from a Greenland folded ice core (2012)
  • Author(s): NEEM community members
  • Journal Title: Nature Volume: 493 Issue: 7433 Pages: 489-494
  • DOI: 10.1038/nature11789
  • Peer Reviewed
• [Journal Article] The rates of sea salt sulfatization in the atmosphere and surface snow of inland Antarctica (2012)
  • Author(s): Iizuka, Y., A.Tsuchimoto, Y.Hoshina, T.Sakurai, M.Hansson, T.Karlin, K.Fujita, F.Nakazawa, H.Motoyama, S.Fujita
  • Journal Title: J.Geophys.Res. Volume: 117 Issue: D4
  • DOI: 10.1029/2011jd016378
  • NAID: 120004593469
  • Peer Reviewed
• [Journal Article] Spatial and temporal variability of snow accumulation rate on the East Antarctic ice divide between Dome Fuji and EPICA DML (2012)
  • Author(s): Fujita, S., Holmlund, P., Andersson, I., Brown, I., Enomoto, H., Fujii, Y., Fujita, K., Fukui, K., Furukawa, T., Hansson, M., Hara, K., Hoshina, Y., Igarashi, M., Iizuka, Y., Imura, S., Ingvander, S., Karlin, T., Motoyama, H., Nakazawa, F., Oerter, H., Sjoberg, L.E., Sugiyama, S., Surdyk, S., Strom, J., Uemura, R., Wilhelms, F.
  • Journal Title: The Cryosphere Volume: 5 Issue: 4 Pages: 1057-1081
  • DOI: 10.5194/tc-5-1057-2011
  • Peer Reviewed
• [Journal Article] The chemical forms of water-soluble microparticles preserved in the Antarctic ice sheet during Termination I (2011)
  • Author(s): Sakurai, et al.
  • Journal Title: J.Glaciol Volume: 57(206) Pages: 1027-1032
  • Peer Reviewed
• [Presentation] Chemical compositions of soluble aerosols in Greenland (2014)
  • Author(s): Ikumi Oyabu, Yoshinori Iizuka, Torbjorn Karlin, Manabu Fukui, and Margareta Hansson
  • Organizer: CRAICC workshops
  • Place of Presentation: University of Helsinki, Finland
• [Presentation] Soluble aerosols compositions reconstructed from NEEM (Greenland) deep ice core (2013)
  • Author(s): Ikumi Oyabu, Yoshinori Iizuka, Torbjorn Karlin, Manabu Fukui, Takeo Hondoh, Daiana Leuenberge, Hubertus Fischer, Simon Schupbach, Gideon Gfeller, Robert Mulvaney and Margareta Hansson
  • Organizer: CRAICC annual meeting
  • Place of Presentation: Aarhus University, Denmark
• [Presentation] Chemical compositions of soluble aerosols around the last termination in the NEEM (Greenland) ice core (2013)
  • Author(s): Ikumi Oyabu, Yoshinori Iizuka, Torbjorn Karlin, Manabu Fukui, Takeo Hondoh, Daiana Leuenberge, Hubertus Fischer, Simon Schupbach, Gideon Gfeller, Robert Mulvaney and Margareta Hansson
  • Organizer: EGU General Assembly 2013
  • Place of Presentation: Austria Center Vienna
• [Presentation] Chemical compositions of soluble aerosols around the last termination in the NEEM (Greenland) ice core (2013)
  • Author(s): Ikumi Oyabu, Yoshinori Iizuka, Torbjorn Karlin, Manabu Fukui, Takeo Hondoh, Daiana Leuenberge, Hubertus Fischer, Simon Schupbach, Gideon Gfeller, Robert Mulvaney and Margareta Hansson,
  • Organizer: goldscmidt 2013
  • Place of Presentation: Firenze Fiera Congress and Exhibition Centre, Itary
• [Presentation] Chemical compositions of soluble aerosols around the last termination in the NEEM (Greenland) ice core (2013)
  • Author(s): Ikumi Oyabu, Yoshinori Iizuka, Torbjorn Karlin, Manabu Fukui, Takeo Hondoh, Daiana Leuenberge, Hubertus Fischer, Simon Schupbach, Gideon Gfeller, Robert Mulvaney and Margareta Hansson
  • Organizer: Third Annual Assembly Top Level Research Initiative (TRI) Interaction between Climate Change and the Cryosphere (ICCC)
  • Place of Presentation: Lund University, Sweden
• [Presentation] Chemical compositions of soluble aerosols around the Termination I in the NEEM (Greenland) ice core (2013)
  • Author(s): Ikumi Oyabu
  • Organizer: Third International Symposium on the Arctic Research
  • Place of Presentation: MIRAIKAN, Tokyo, Japan
• [Presentation] Chemical composition of soluble particles around the Termination 1 in the Dome Fuji ice core (2012)
  • Author(s): Ikumi Oyabu
  • Organizer: EGU General Assembly 2012
  • Place of Presentation: the Austria Center Vienna, Vienna, Austria
• [Presentation] Chemical composition of soluble particles around the Termination 1 in the Dome Fuji ice core (2012)
  • Author(s): Ikumi Oyabu
  • Organizer: International Partnerships in Ice Core Sciences First Open Science Conference
  • Place of Presentation: the Belembra Club, Giens Pensinsula, France
• [Presentation] Chemical compositions of soluble aerosols around the Termination I in the NEEM (Greenland) ice core (2012)
  • Author(s): Ikumi Oyabu
  • Organizer: International Glaciology Society Nordic Branch Meeting 2012
  • Place of Presentation: Stockholm University, Stockholm, Sweden
• [Presentation] Chemical compounds of past soluble aerosols preserved in the NEEM and Dome Fuji ice cores (2012)
  • Author(s): Yoshinori Iizuka
  • Organizer: EGU General Assembly 2012
  • Place of Presentation: the Austria Center Vienna, Vienna, Austria
• [Presentation] Termination Iにおける南極ドームふじ氷床コアに含まれる水溶性微粒子の化学組成 (2011)
  • Author(s): 大藪幾美, ほか
  • Organizer: 極域科学シンポジウム
  • Place of Presentation: 国立極地研究所(東京都)
  • Year and Date: 2011-11-16
• [Presentation] 南極内陸における過去30 万年の硫酸塩エアロゾルと気温のカップリング
  • Author(s): 飯塚 芳徳, 植村 立, 本山秀明, 鈴木利孝，三宅隆之，平林幹啓，本堂武夫
  • Organizer: 日本地球惑星科学連合2013年大会
  • Place of Presentation: 千葉県 幕張メッセ
  • Invited
• [Book] 地球環境のタイムカプセル (2011)
  • Author(s): 藤井理行, ほか
  • Total Pages: 268
  • Publisher: 成山堂書店