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The observational and numerical study on the impact of the Amur to the Okhotsk sea ice

Research Project

Project/Area Number 12573006
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Meteorology/Physical oceanography/Hydrology
Research InstitutionTOKAI UNIVERSITY

Principal Investigator

TACHIBANA Yoshihiro  Tokai University, Liberal Arts Education Center, Associated Professor, 総合教育センター, 助教授 (10276785)

Co-Investigator(Kenkyū-buntansha) YAMAZAKI Kouji  Hokkaido University, Environmental Earth Science, Professor, 地球環境科学研究科, 教授 (70270791)
竹内 謙介  北海道大学, 低温研究所, 教授 (00107450)
Project Period (FY) 2000 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥5,400,000 (Direct Cost: ¥5,400,000)
Fiscal Year 2003: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2002: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2001: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2000: ¥2,600,000 (Direct Cost: ¥2,600,000)
Keywordsthe Amour / water vapor flux / AO / flux / interannual variation / summertime atmospheric circulation / オホーツク海 / 海氷 / オホーツク海高気圧 / 淡水 / 大気大循環 / 水温観測 / 最大海氷面積 / バレンツ海 / ロスビー波 / 夏期 / 流量観測 / 河川流入量 / 海水温度 / 海表面温度 / 最大海水面積
Research Abstract

Purposes
The Sea of Okhotsk(OK), which is located between the Sibeiian continent and the North Pacific, is covered by ice from November through June, and is one of the southernmost ice-covered oceans in the Northern Hemisphere. The interannual variability of the sea-ice in the OK is large and sea-ice coverage has abniptly decreased since the end of the 1980's. Also, the sea-ice influences large scale climate such as the development of the Aleutian low and the formation of the Noiih Pacific intermediate waters 8-10. In analogy with the Arctic Ocean, sea-ice in the OK has been believed to be influenced by the ground hydrological processes. Previous studies suggest the existance of a highly siralilied, low-salinity surface layer in the OK, which suppresses deep convection and promotes freezing. It has also been speculated that the low-salinity layer is mainly due to the inflow of the fresh water from the Amur River. Although previous studies attempted to find evidence of the river-water in … More fluence on the sea-ice using data analyses, the lack of reliable interannual data for sea-ice precluded direct comparison between the ice-data and the discharge-data Because the period of reliable satellite-based ice-data has become long enough to analyze the inteninnual variability, we are now able to directly compare the two. The purpose of our study is to collect the Amur discharge data and to quantify the effects of the Amur discharge on the sea-ice on interannual and longer time scales
Results
The impacts of ground hydrology on the high-latitude oceans, such as melting glaciers and discharge from rivers in the oceans, can affect global climate by mediating the flow of low-density, fresh water inflow that strengthens the ocean's stratification, suppresses the thermohaline circulation and also promotes sea-ice formation. Ourtime series analysis based on sea-ice and river-discharge data indicates that the effect of this fresh water on the sea-ice in the Sea of Okhotsk, into which the second largest Siberian River, the Amur, discharges, is relatively unimportant Interannual variations in the ice extent are negatively correlated with the amount of discharge. We find evidence that the inflow of wanner river water tends to the raise of the sea surface temperature, and that it suppresses ice formation in the following winter. These findings imply that sensible heat transported by large rivers in high latitudes should be reconsidered in studying global climate change. Less

Report

(5 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (36 results)

All Other

All Publications (36 results)

  • [Publications] Tachibana, Y., Aoki, T, Fukabori, M, Hachikubo, A, Nishio, F: "Effects of snow physical parameters on spectral albedo and bidirectional reflectance of snow surface, Journal of Geophysical Research - Atmospheres -"Journal of the Meteorological Society of Japan. Vol.79,No.2. 687-694 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tachibana, Y., Akira Watanabe: "Enhanced Rawinsonde Observation for GAME Tropics IOP in 1998"AME Publication No.11 GAME-Tropics Publication. No.11. (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 立花 義裕: "オホーツク海の海氷、アムール川淡水流入と10年変動"月刊海洋. 号外No.24. 162-166 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Iwamoto, Katsushi., Kei Domon, Meiji Honda, Y.Tachibana, Kensuke Takeuchi: "Estimation of Surface Heat Flux Based on Rawinsonde Observation in the Southwestern Part of the Sea of Okhotsk under Ice-covered Condition"Journal of the Meteorological Society of Japan. Vol.79,No.2. 687-694 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Ogi.Masayo., Y.Tachibana, Fumihiko Nishio, Michael A: "Danchenkov, Does the Fresh Water Supply from the Amur River Flowing into the Sea of Okhotsk Affect Sea Ice Formation?"Journal of the Meteorogical Society of Japan. vol.79. 123-124 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 立花 義裕: "冬季の海氷と夏期の海霧・気圧場の相互の関連性"月刊海洋. Vol.34. 879-884 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 立花 義裕: "オホーツク海の海氷、アムール川淡水流入と10年変動"月刊海洋. 号外No.24. 162-166 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 立花 義裕, 小川 寛子, 岩本 勉之, 竹内 謙介, 若土 正暁: "霧を伴わないオホーツク海高気圧と伴う場合の大気海洋相互作用の違い--ロシア船クロモフによる大気海洋観測結果--"月刊海洋. 406号. 305-308 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 立花 義裕, 小木 雅世, 山崎 孝治: "冬季北大西洋振動(NAO)の夏季大気大循環への影響と太陽周期による変調"月刊海洋. 406号. 323-327 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 立花 義裕, 山崎 孝治, 小木 雅世: "北半球環状モードの季節変化"月刊海洋. 406号. 319-322 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tachibana, Y., Masayo Ogi, Kouji Yamazaki: "Solar cycle modulation of the seasonal linkage of the North Atlantic Oscillation(NAO)"GEOPHYSICAL RESEARCH LETTERS. VOL.30. 8-1-8-4 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tachibana, Y., Jun INOUE, Jun ONO: "Characteristics of Heat transfer over the Ice Covered Sea of Okhotsk during Clod-air Outbreaks"Journal of the Meteorological Society of Japan. Vol.81,No.5. 1057-1067 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tachibana, Y., Masayo Ogi: "Impact of the wintertime North Atlantic Oscillation (NAO) on the summertime atmospheric circulation"GEOPHYSICAL RESEARCH LETTERS. VOL.30,NO.13. 37-1-37-4 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Ogi.M., Y.Tachibana, K.Yamazaki: "The Connectivity of the Okhotsk Sea Ice with the Okhotsk high and their Relation to the Winter North Atlantic Oscillation(NAO)"Journal of Meteorological Society of Japan. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tachibana, Y, Aoki, T, Fukabori, M, Hachikubo, A, Nishio: "Effects of snow physical parameters on spectral albedo and bidirectional reflectance of snow surface"Journal of Geophysical Research -Atmospheres -. Vol.105, NO.D8. 10219-10236

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tachibana, Y., Akira Watanabe: "Rawindonde Observation for GAME Enhanced Tropics IOP in 1998"GAME Publication No. 11 GAME-Tropics Publication. No.5, No.11. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tachibana, Y.: "Okhotsk Sea ice, the Amur discharge and their relation to decadal climate variation"Kaiyo. No.24. 162-166 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Iwamoto, Katsushi., Kei Domon, Meiji Honda, Y.Tachibana, Kensuke Takeuchi: "Estimation of Surface Heat Flux Based on Rawindonde Observation in the Southwestern Part of the Sea of Okhotsk under Ice-covered Condition"Journal of the Meteorological Society of Japan. Vol.79, No.2. 687-694 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Ogi, Masayo, Y.Tachibana, Fumihiko Nishio, Michael A.Danchenkov: "Does the Fresh Water Supply from the Amur River Flowing into the Sea of Okhotsk Affect Sea Ice Formation?"Journal of the Meteorological Society of Japan. vol.79. 123-124 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tachibana, Y.: "Inter-seasonal linkage between the winter Sea ice and summer fog associated with surrounding atmospheric circulations"Kaiyo. No.34. 879-884 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tachibana, Y.: "Okhotsk Sea ice, the Amur discharge and their relation to decadal climate variation"Kaiyo. No.24. 162-No.166

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tachibana Y., Hiroko Ogawa, Katsushi Iwamoto, Kensuke Takeuchi, Masaaki Wakatuchi: "The difference in the air-sea interaction between the Okhotsk highs associated with marine fog and those without marine, fog"Kaiyo. No.406. 305-308

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tachibana Y., Masayo Ogi, Kouji Yamazaki: "Solar cycle modulation of the North Atlantic Oscillation"Kaiyo. No.406. 323-327

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tachibana, Y., Kouji Yamazaki, Masayo Ogi: "Seasonal evolution of the northern annular mode"Kaiyo. No.406. 319-322

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tachibana, Y., Masayo Ogi, Kouji Yamazaki: "Solar cycle modulation of the seasonal linkage of the North Atlantic Oscillation (NAO)"GEOPHYSICAL RESEARCH LETERS. Nol.30, No.22. CLM 8-1-CLM8-4 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tachibana, Y., Jun INOUE, Jun ONO: "Characteristics of Heat transfer over the Ice Covered Sea of Okhotsk during Cold-air Outbreaks"Journal of the Meteorological Society of Japan. Vol.81, No.5. 1057-1067 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tachibana Y., Masayo Ogi: "Impact of the wintertime North Atlantic Oscillation (NAO) on the Summertime atmospheric circulation"GEOPHYSICAL RESEARCH LETERS. Vol.30, No.13. 37-1-37-4 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Ogi M., Y.Tachibana, K.Yamazaki: "The Connectivity of the Okhotsk Sea Ice with the Okhotsk high and their Relation to the Winter North Atlantic Oscillation (NAO)"Journal of the Meteorological Society of Japan. (in printing).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Ogi.M., K.Yamazaki.: "Solar cycle modulation of the seasonal linkage of the North Atlantic Oscillation (NAO)"Geophysical Research Letter. 30. 018545 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Ogi.M., Y.Tachibana., K.Yamazaki.: "Impact of the Wintertime North Atlantic Oscillation (NAO) on the Summertime Atmospheric"Geophysical Research Letter. 30. 017280 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Inoue, Tachibana, et al.: "Characteristics of heat transfer over the ice covered Sea of Okhotsk during cold-air"J. Meteorological Society of Japan. 81. 1057-1067 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 立花義裕, 小木雅世: "冬季の海氷と夏期の海霧・気圧場の相互の関連性 -オホーツク海とバレンツ海を例として-"月刊海洋. 号外. 879-884 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] K.Iwamoto, K.Domon, M.Honda, Y.Tachibana, K.Takeuchi: "Estimation of surface heat flux based on rawinsonde observation in the southwestern part of the Sea of Okhotsk under ice-covered condition"J.Met.Soc.of Japan. 79-2. 101-108 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Yoshihiro Tachibana: "Does the Fresh Water Supply from the Amur River Flowing into the Sea of Okhotsk Affect Sea lce Formation?"Journal of the Meteorogical Society of Japan. 79/1. 123-129 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 立花義裕: "オホーツク海の海氷、アムール川淡水流入と10年変動"月刊 海洋 号外. 24. 162-166 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 立花義裕: "アムール川研究紀行"文明. 83. 1-4 (2000)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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