• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Study of Cryosphere, Atmosphere, Ocean Interaction in the Global Climate System

Research Project

Project/Area Number 01460055
Research Category

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

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

Principal Investigator

YASUNARI Tetsuzo  Institute of Geoscience, University of Tsukuba, Associate Professor, 地球科学系, 助教授 (80115956)

Project Period (FY) 1989 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1991: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1990: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1989: ¥1,800,000 (Direct Cost: ¥1,800,000)
KeywordsMonsoon / Enso / Q^<13>O / Climate System / Atmosphere / Ocean Interaction / Cryosphere Interaction / El Nino / ENSO / 大気・海洋担互作用 / 雪氷 / 大気 / 海洋 / ABO / 担互作用 / QBO
Research Abstract

The role of the Asian summer monsoon on the interannual variability of the global climate system particularly relevant to the ENSO time scales is discussed, by examining the statistical and dynamical links between the Asian summer monsoon, the atmosphere/ocean system in the tropics and the westerly flow regimes in the extratropics.
The Asian monsoon, the ocean and the atmosphere in the tropical Pacific are tightly linked together as one climate system, named here as the MAOS (Monsoon and the Coupled Atmosphere/Ocean System). The MAOS prominently shows the biennial oscillatory nature which tends to have anomalous states starting in the northern summer monsoon season and persisting for about one year (Yasunari, 1990a : 1991).
The anomalous state of the MAOS produces the anomalous atmospheric circulation over the subtropics and the extratropics of the north Pacific during summer through the early winter, through the modulation of the subtropical high and the stationary Rossby wave propagati … More on mechanism. In the mid winter, this anomalous circulation over the north Pacific is evolved to the hemispheric winter anomalous circulation with wavenumber-one and/or-two structure.
The anomalous circulation over Eurasia associated with this hemispheric anomalous flow regime seems to provide a favorable condition for the extensive (or diminished) snow cover area over central Asia, which in turn is responsible for the reversed anomalous state of the next Asian summer monsoon and the MAOS. That is, the biennial nature of the climate system in the northern hemisphere may be due, at least partly, to this two-way interactions between the tropics and the extratropics. In these, processes, the Asian monsoon plays a key role as a transmitter of climate signals between the tropics and the extratropics through the land/atmosphere/ocean interaction in the seasonal cycle.
In addition, it is strongly suggested that the North Atlantic Oscillation (NAO), in reality, plays a crucial role in the timing of the occurrence of the ENSO event, by stochastically amplifying or damping the biennial oscillation of this coupled climate system. That is, the more or less irregular ENSO cycle may result from this interaction between the MAOS and the NAO, where the former seems to have the nature of an almost-intransitive climate system, while the latter seems to represent the more chaotic nature of the westerly flow regime. Less

Report

(4 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • 1989 Annual Research Report
  • Research Products

    (33 results)

All Other

All Publications (33 results)

  • [Publications] Yasunari,T.and Y.Seki: "Role of the Asian monsoon on the interannual variability of the global climate system." J.Meteor.Soc.Japan. 70. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 安成 哲三: "地球気候システムにおけるモンス-ンの役割" 科学. 61. 697-704 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Yasunari,T.,A.Kitoh and T.Tokioka: "Local and remote responses to excessive snow mass over Eurasia appearing in the northern spring and summer climate.-A study with the MRI GCM-" J.Meteor.Soc.Japan. 69. 473-487 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Yasunari,T.: "The monsoon year -A new concept of the climatic year in the tropics." Bull.American Meteor.Soc.72. 1131-1138 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Yasunari,T.: "Impact of Indian monsoon on the coupled atmosphere/ocean systems in the tropical Pacific." Meteor & Atmos.Phys.44. 29-41 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 安成 哲三: "ユ-ラシア大陸の積雪とENSOー雪氷・大気・海洋結合系の提唱ー" 地学雑誌. 98. 83-92 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Yasunari,T.(分担執筆): "Changes in atmospheric circulation patterns associated with the recent warming in the northern hemisphere." in“Observed Climate Variations Changes:Contribution in support of section 7 of 1990 IPCC scientific assessment.", Chap.XXVIII,1-7 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Yasunari,T.,Y.Morinaga,H.Igarashi and K.Masuda,(分担執筆): "Snow mass climatology over the Eurasian continent derived from NIMBUSー7 SMMR data." “Applications of remote sensing in Asia and Oceania",ed.by S.Murai.Asian association on remote sensing,352-355 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Yasunari, T. and Y. Seki, 1992: "Role of the Asian monsoon on the interannual variability of the global climate system." J. Meteor. Soc. Japan. 70. 177-189 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Tian, S. -F, and T. Yasunari, 1992: "Time and space structure of interannual variations in summer rainfall over China." J. Meteor. Soc. Japan. 70. 585-596 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Yasunari, T., A. Kitoh and T. Tokioka, 1991: "Local and remote responses to excessive snow mass over Eurasia appearing in the northern spring and summer climate. -A study with the MRI. GCM-." J. Meteor. Soc. Japan. 69. 473-487 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Yasunari, T.: "1991 : The monsoon year-A new concept of the climatic year in the tropics." Bull. American Meteor. Soc.72. 1131-1138 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Yasunari, T.: "1990 : Impact of Indian monsoon on the coupled atmosphere/ocean systems in the tropical Pacific." Meteor. & Atmos. Phys.44. 29-41 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Yasunari, T.: "1990 : Changes in atmospheric circulation patterns associated with the recent warming in the nothern hemisphere." "Observed Climate Variations Changes : Contribution in support of section 7 of 1990 IPCC scientific assessment. " Chap. XXVIII. 1-7 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Yasunari, T.: "1990 : Monsoon and ENSO-A coupled ocean/land/atmosphere system." Proc. International TOGA Sci. Conf.WMO/TD No. 379. 111-120 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Yasunari, T., Y. Morinaga, H. Igarashi and K. Masuda: "1991 : Snow mass climatology over the Eurasian continent derived from NIMBUS-7 SMMR data." "Applications of remote sensing in Asia and Oceania". Asian association on remote sensing. 352-355 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Yasunari,T.: "Role of the Asian Monsoon on the Interannnal Variability of the Global Gtimate System" J.Meteor.Soc.Japan. 70. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 安成 哲三: "地球気候システムにおけるモンス-ンの役割" 科学. 61. 697-704 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Yasunari,T.: "Local and remote responses to excessive snow mass over Eurasia appearing in the northern spring and summerclimcde" J.Meteor.Soc.Japan. 69. 473-487 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Yasunari,T: "The monsoon yearーA new concept of the climatic year in the tropics." Bulletin of the American Meteorelyicl Saciety. 72. 1131-1138 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Yasunari,T: "Impact of Indian monsoon on the coapled atmospherel ocean system in the fropicl Pacific." Meteor & Afmos.Phys.44. 29-41 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] 安成 哲三: "ユ-ラシア大陸の積雪とENSOー雪水・大気・海洋結合系の提唱ー" 地学雑誌. 98. 83-92 (1989)

    • Related Report
      1991 Annual Research Report
  • [Publications] 安成 哲三: "「東南アジアの自然」第2章熱帯とモンス-ン 高谷好一編(分担執筆)" 弘文堂, 24 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] Yasunari,T.: "Snow Mass Climatology over the Eurasian continent devived from Nimbwー7 JMMR Data.(分担執筆)" Asian Associction on Rernote Senoiy, 4 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 安成 哲三: "ユ-ラシア大陸の積雪とENSOー雪氷・大気・海洋結合系の提唱ー" 地学雑誌. 98. 83-92 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Yasunari: "Monsoon and ENSO ーA Coupled Ocean/Laod/Atmosphere System." Proc.International TOGA Scientitic Conference.WMO. No379. 111-120 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Yasunari,T.Kitoh,A.Tokioka,T.: "Role of Eurasian Snow Cover on the Spring and Summer Climate of the Northern Hemisphere ーA Study MRI GCMー" J.Meteorological Society of Japan. 69. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Yasunari: "Impact of Indian Monsoon on the Coupled Atmosphere/Ocean System in the tropical Pacific" Meteorology and Atmospheric Physics. 41. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Yasunari: "The Monsoon Year ーA New Concept of the Climatic Year in the Tropics" Bulletin of the American Meteorological Society. 72. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Yasunari: "Role of Monsoon on Global Climate in "Water and The Earth"" Deepak Pub., (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Yasunari: "A Possible Link of the QBOs Between the Stratosphere,Troposphere and Sea Surface Temperature in the Tropics" Journal of the Meteorological Socity of Japan. 67. 483-493 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 安成哲三: "ユ-ラシア大陸の積雪とENSO-雪氷・大気・海洋結合系の提唱" 地学雑誌. 98. 83-92 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] T.Yasunari: "Impact of Indian Monsoon on the Coupled Atmosphere/Ocean System in the Tropical Pacific" Meteorology and Atmospheric Physics. 40. (1990)

    • Related Report
      1989 Annual Research Report

URL: 

Published: 1989-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi