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Modification of Air Mass over the Sea Ice in the Sea of Okhotsk

Research Project

Project/Area Number 09304044
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Meteorology/Physical oceanography/Hydrology
Research InstitutionInstitute of Low Temperature Science, Hokkaido University

Principal Investigator

TAKEUCHI Kensuke  Hokkaido Univ., Inst.of Low Temp.Sci., Prof., 低温科学研究所, 教授 (00107450)

Co-Investigator(Kenkyū-buntansha) YAMAZAKI Koji  Hokkaido Univ., Grad.School of Environ.Sci., Prof., 大学院・地球環境科学研究科, 教授 (70270791)
TOYOTA Takenobu  Hokkaido Univ., Inst.of Low Temp. Sci., Inst., 低温科学研究所, 助手 (80312411)
ENDO Tatsuo  Hokkaido Univ., Inst.of Low Temp.Sci., Asso.Prof., 低温科学研究所, 助教授 (20001844)
TACHIBANA Yoshihiro  Tokai Univ., Res.Inst.of Civilization, Lec., 文明研究所, 講師 (10276785)
藤吉 康志  北海道大学, 低温科学研究所, 教授 (40142749)
中村 健治  名古屋大学, 大気水圏科学研究所, 教授 (20262917)
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥20,600,000 (Direct Cost: ¥20,600,000)
Fiscal Year 1999: ¥6,700,000 (Direct Cost: ¥6,700,000)
Fiscal Year 1998: ¥5,600,000 (Direct Cost: ¥5,600,000)
Fiscal Year 1997: ¥8,300,000 (Direct Cost: ¥8,300,000)
Keywordssea ice / Sea of Okhotsk / heat flux / Rawinsonde / air-sea interaction / winter monsoon / オホーツク / 気団変質 / 海面フラックス / 界面フラックス
Research Abstract

In order to investigate the effect of sea ice on the heat and moisture exchange between atmosphere and ocean, modification of air mass is observed over the sea ice area in the Sea of Okhotsk. Rawin sonde observations are carried out at Shari-cho on the Okhotsk coast of Hokkaido Island and on the ice-break vessel "Soya" of Japan Hydrographic Office, for several weeks in the season sea ice coverage increases in the southern part of the Sea of Okhotsk. The vertical profile of temperature and humidity measured by those observations at cold air out-break events are compared with that at Juzhno-sakhalinsk which locates at the upper stream of the wind. Increase of heat and moisture in the surface mixed layer is evaluated and the heat and moisture flux from the sea surface are estimated. Analysis shows that increase of sea ice concentration over the pass of the air mass tend to reduce the development of mixed layer in the lower atmosphere and the heat and moisture flux from the sea surface.

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] Iwamoto,K. et al: "Estimation of surface heat fulux based on rawinsonde observation n the southwestern part of the Sea of Okhotsk"J.Mteor.Soc.Japan. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Iwamoto, K.et al: "Estimation of surface heat fulux based on rawinsonde observation n the southwestern part of the Sea of Okhotsk"J.Mteor.Soc.Japan. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Honda, M.: "Dynamic and Thermodynamic Characteristics of Atmospheric Response to Anomalous Sea-Ice Extent in the Sea of Okhotsk"Journal of Climate. 12. 3347-3358 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Honda,M: "Dynamic and Thermodynamic Characteristics of Atmospheric Response to Anomalous Sea-Ice Extent in the Sea of Okhotsk" Journal of Climate. (in press).

    • Related Report
      1998 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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