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Global Structure of the Quasi-Biennial Oscillation in the Troposphere

Research Project

Project/Area Number 62540298
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 気象・海洋・陸水学
Research InstitutionInstitute of Geoscience, University of Tsukuba

Principal Investigator

YASUNARI Tetsuzo  Assistant Professor, Institute of Geoscience, University of Tsukuba, 地球科学系, 講師 (80115956)

Co-Investigator(Kenkyū-buntansha) YOSHINO Masatoshi  Professor, Institute of Geoscience, University of Tsukuba, 地球科学系, 教授 (60015956)
Project Period (FY) 1987 – 1988
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1988: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1987: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsQBO / ENSO / MONSOON / SST / モンスーン / QBO,ENSO / 海面水温 / 混合層水温 / 経年変動
Research Abstract

The analyses of tropical wind, sea furface tempeaturte and outgoing longwave radiation data sets have revealed that the existence of the quasi-biennial oscillation (QBC)as a diminant interannual mode as well as E1 Nino/Southern Oscillation (ENSO) mode. The phase relationships among these parameters showed that this QBO mode is a manifestation of a proper oscillation of the coupled atmosphereocean system in the tropical Pacific.
It has also been revealed that this QBO mode in the tropical tropsophere is closely linked withthe Asina summer monsoon activity, in such a manner that the monsoon anomaly in summer preceeds the sea surface temperature amonaly in the western Pacific during the following autumn and winter. This time lag correlation is physically interpreted as the time-lag response the coupled atmosphere/ocean system to the forcing of the Asian summer monsoon system, or the coupled system of land/atmosphere/ocean.
It has been further demonstrated that the QBC in the Asian summer monsoon is linked with some remarkable teleconnection patterns in the northern hemisphere with systematic time lags. Particularly, the Eurasian pattern and PNA pattern seem to be important for the formation and deformation of the monsoon anomalies.
Finally, it has also been poited out that the QBC in the tropical stratosphere seems to be coupled to that in the tropical tropsphere. This new evidence may suggest the revision of the current theory of the stratospheric QBO at least partly. that is, the assumption of random forcing from the tropsophere is not necessarily true.

Report

(3 results)
  • 1988 Annual Research Report   Final Research Report Summary
  • 1987 Final Research Report Summary
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] Yoshino,M.;R.Kawamura.: Beitr.Phys.Atmosph.60. 283-293 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yasunari,T.: Met,Res.Report,Univ.of Tokyo. 88-1. 30-38 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 安成哲三: 月刊 海洋科学. 20. 616-626 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yasunari,T.;R.Suppiah.: Tropical Rainfall Measurements.113-122 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yasunari,T.: Submitted to J.Climate. (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yasunari,T.: To appear in J.Met.Soc.Japan. (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yoshino, M.; R.Kawamura: "Periodicity and Propagation of Sea Surface Temperature Fluctuations in the Equatorial Pacific." Beitr. Phys. Atmosph.60. 283-293 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yasunari, T.: "Global Teleconnections Associated with Indian Monsoon and the ENSO." Met. Res. Report, Univ. of Tokyo. 88-1. 30-38 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yasunari, T.: "Impact of Indian Monsoon on the Coupled Atmosphere/Ocean System." Marine Sciences Monthly. 20. 616-626 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yasunari, T.: "Impact of Indian Monsoon on the Coupled Atmosphere/Ocean System." Submitted to J. Climate. (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yasunari, T.: "A Possible Link of the QBOs among Stratosphere, Troposphere and Sea Surface Temperature in the Tropics." To appear in J. Met. Soc. Japan. (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yasunari, T.; T. Suppiah: Some Problems on the Interannual Variability of Indonesian Monsoon Rainfall.Tropical Rainfall Measurements. A. Deepak Publishing, 113-122 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 安成哲三: 月刊海洋科学. 20. 616-626 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Yasunari,T.: Submitted to J.Climate. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] Yasunari,T.: To appear in J.Met.Soc.Japan. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] T. Yasunari: J. Met. Soc. Japan. 65. (1988)

    • Related Report
      1987 Final Research Report Summary
  • [Publications] T. Yasunari and Y. Morinaga: International Associations of Hydrological Sciences (IAHS) Pub. No. 166. 166. 73-78 (1987)

    • Related Report
      1987 Final Research Report Summary
  • [Publications] T. Yasunari and R. Suppiah: Proc. Tropical Rainfall Measuring Mission (TRMM). (1988)

    • Related Report
      1987 Final Research Report Summary
  • [Publications] T. Yasunari: Journal of Climate. (1988)

    • Related Report
      1987 Final Research Report Summary
  • [Publications] M. Yoshino and R. Kawamura: Beite.Phy.Atmosph.60. 283-293 (1987)

    • Related Report
      1987 Final Research Report Summary

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Published: 1987-04-01   Modified: 2016-04-21  

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