1994 Fiscal Year Final Research Report Summary

気候モデルの開発および気候変化の数値実験

Research Project

Project/Area Number	06NP0203
Research Category	Grant-in-Aid for Creative Basic Research
Allocation Type	Single-year Grants
Research Institution	The University of Tokyo
Principal Investigator	住明正東京大学, 気候システム研究センター, 教授 (10179294)
Co-Investigator(Kenkyū-buntansha)	山形俊男東京大学, 大学院理学系研究科, 教授 (50091400) 松野太郎北海道大学, 大学院地球環境科学研究所, 教授 (40037172) 宮原三郎九州大学, 理学部, 教授 (70037282) 杉ノ原伸夫東京大学, 気候システム研究センター, 教授 (50090519) 廣田勇京都大学, 理学部, 教授 (70025485)
Project Period (FY)	1990 – 1994
Keywords	大気大循環モデル / 気候モデル / 海洋大循環モデル / 成層圏オゾン / 中層大気大循環モデル / ENSO / QBO / 長周期変動
Research Abstract	気候モデルの基礎となる大気大循環モデル、海洋大循環モデルの開発を終了した。大気大循環モデルに関しては、気候値の海面水温、及び1979年から89年までの実際の海面水温を与えたsimulationを行った。結果は、他のモデルと比べて遜色ない性能を示すことが出来た。放射や雲・降水の取り扱い改良されているモデルなので、今後の地球温暖化の研究に有効と思われる。更に結合モデルの準備のために、赤道域を中心とした大気海洋モデルも40年間分計算し、又混合層モデルを結合してCO2倍増時の温暖化実験を行った。エルニーニョに対応する変動もsimulateした。海洋モデルに関しては、海洋大循環の基本的特徴を再現することに成功したと共に、生物地球化学過程を組み込んだ生物化学大循環モデルの開発も行い、簡単な生物モデルによって、海洋中の酸素やアルカニティなどが良く再現出来ることを明らかにした。中層大気モデルに関しては、大気潮汐の砕波の効果も取入れたモデルの開発を終了した。大気のlow-frequencyの変動に関する研究では、数値モデルの非線形構造を解析して分岐図を作成して、観測されるブロッキングなどの天候レジームの力学的基礎を明らかにした。成層圏の解析では、1980年代10年間のデータを用い成層圏の温度の長期的な冷却化の傾向を明らかにした。又、成層圏のオゾンの変動の解析では、1984-1989年の5年間の変動をSAGE IIから得られたデータを用いて研究した。その結果、年変化、QBO、ENSOに対応するオゾンの変動を見いだした。特に20km以上ではQBOに対応する変動が大きく、20km以下ではENSOに対応する変動が大きいことが見いだされた。

Research Products

(23 results)

All Other

All Publications (23 results)

[Publications] R.Oki and A.Sumi: "Sampling Simulation of TRMM Rainfall Estimation using Radar-AMeDAS Composites" J.Appl.Meteorology. 33. 1597-1608 (1994)
[Publications] Hirooka,T.,J.Yamashita and K.Kawahira: "Long-term variations of stratospheric circulations:a comparison of men fields in the 1980s with CIRA-1986 models." J.Atmos.Terr.Phys.56. 1041-1050 (1994)
[Publications] Hasebe,F.: "Quasi-Biennial Oscillations of Ozone and Diabatic Circulation in the Equatorial Stratosphere." J.Atmos.Sci. 51. 729-745 (1994)
[Publications] S.Miyahara and J.M.Forbes: "Interactions between diurnal tides and gravity waves in the lower thermosphere." J.Atmos.Terr.Phys.56(10). 1365-1373 (1994)
[Publications] Kohsiek,K.H.Glassmeier and T.Hirooka: "Periods of planetary waves in geomagnetic variations." Ann.Geophysicae. 13. 168-176 (1995)
[Publications] Takahashi,M.: "A QBO like oscillation in a two-dimensional model derived from a GCM." J.Meteor.Soc.Japan. 71. 641-654 (1993)
[Publications] Takahashi,M.: "The numerical simulations of the equatorial quasi-biennial oscillation." Climate,Environmental and Geophysical Fluid Dynamics,China Meteorological Press. 46-55 (1993)
[Publications] Takahashi,M.: "A three-dimensional simulation of the equatorial quasi-biennial oscillation." J.Atmos.Sci.49. 1020-1035 (1992)
[Publications] Takahashi,M.: "The mean zonal flow response to Rossby wave and gravity wave forcing in the equatorial lower stratosphere:Relationship to the QBO." J.Atmos.Sci.2078-2087 (1991)
[Publications] Tanaka,H.L.: "A life-cycle of nonlinear baroclinic waves represented by 3-D spectral model." Tellus(accepted). (1995)
[Publications] Tanaka,H.L.and Q.Ji: "Comparative energetics of FGGE re-analyses using the normal mode expansion." J.Meteor.Soc.Japan. 73. 1-12 (1995)
[Publications] Satoh,M.: "Hadley circulation in radiative-convective equilibrium in an axially symmetric atmosphere." J.Atmos.Sci.51. 1947-1968 (1994)
[Publications] Suzuki,T.,S.Ito and K.Takeuchi: "Variability of Upper Ocean at the equator,156E,Observed by R/V Hakuho Maru during TOGA-COARE IOP." J.Meteor.Soc.Japan. (in press). (1995)
[Publications] Minobe,S.,and K.Takeuchi: "Annual Period Equatorial Waves in the Pacific Ocean." J.Geophys.Res.(submitted). (1995)
[Publications] Ushiyama,T.,S.Sato and K.Takeuchi: "Time and Spatial Variations of Mesoscale Rainfalls and their Relation to the Large Scale Field in the Western Tropical Pacific." J.Meteor.Soc.Japan. (in press). (1995)
[Publications] Ishikawa,I.,Y.Yamanaka and N.Suginohara: "Effects of presence of a circumpolar region on buoyancy-driven circulation." Journal of Oceanography. 50. 247-263 (1994)
[Publications] M.Arai and T.Yamagata: "Asymmetric evolution of eddies in rotating shallow water." CHAOS. 4(2). 163-175 (1994)
[Publications] Nitta,T.and S.Sekine: "Diurnal variation of convectiveactivity over the tropical western Pacific." J.Meteor.Soc.Japan. 72. 627-641 (1994)
[Publications] Nitta,T.and M.Kachi: "Interdecadal variations of precipitation over the tropical Pacific and Indian Oceans." J.Meteor.Soc.Japan. 72. 823-831 (1994)
[Publications] H.Nakamura: "Rotational Evolution of Potential Vorticity Associated with a Strong Blocking Flow Configuration over Europe." Geophys.Res.Lett.21. 2003-2006 (1994)
[Publications] Ruggaber,A.,R.Dlugi and T.Nakajima: "Modelling radiation quantities and photolysis frequencies in the troposphere." J.Atmos.Chem.18. 171-210 (1994)
[Publications] Spinhirne,J.D.,and T.Nakajima: "The glory of clouds in the near infrared." Applied.33. 4652-4662 (1994)
[Publications] Kaufman,Y.J.,A.Gitelson,A.Karnieli,E.Ganor,R.S.Fraser,T.Nakajima,S.Mattoo and B.N.Holben: "Size distribution and scattering phase function of aerosol particles retrieved from sky brightness measurements." J.Geophys.Res.99. 10341-10356 (1994)

1994 Fiscal Year Final Research Report Summary

気候モデルの開発および気候変化の数値実験

Principal Investigator

住 明正 東京大学, 気候システム研究センター, 教授 (10179294)

Research Products

[Publications] R.Oki and A.Sumi: "Sampling Simulation of TRMM Rainfall Estimation using Radar-AMeDAS Composites" J.Appl.Meteorology. 33. 1597-1608 (1994)

[Publications] Hirooka,T.,J.Yamashita and K.Kawahira: "Long-term variations of stratospheric circulations:a comparison of men fields in the 1980s with CIRA-1986 models." J.Atmos.Terr.Phys.56. 1041-1050 (1994)

[Publications] Hasebe,F.: "Quasi-Biennial Oscillations of Ozone and Diabatic Circulation in the Equatorial Stratosphere." J.Atmos.Sci. 51. 729-745 (1994)

[Publications] S.Miyahara and J.M.Forbes: "Interactions between diurnal tides and gravity waves in the lower thermosphere." J.Atmos.Terr.Phys.56(10). 1365-1373 (1994)

[Publications] Kohsiek,K.H.Glassmeier and T.Hirooka: "Periods of planetary waves in geomagnetic variations." Ann.Geophysicae. 13. 168-176 (1995)

[Publications] Takahashi,M.: "A QBO like oscillation in a two-dimensional model derived from a GCM." J.Meteor.Soc.Japan. 71. 641-654 (1993)

[Publications] Takahashi,M.: "The numerical simulations of the equatorial quasi-biennial oscillation." Climate,Environmental and Geophysical Fluid Dynamics,China Meteorological Press. 46-55 (1993)

[Publications] Takahashi,M.: "A three-dimensional simulation of the equatorial quasi-biennial oscillation." J.Atmos.Sci.49. 1020-1035 (1992)

[Publications] Takahashi,M.: "The mean zonal flow response to Rossby wave and gravity wave forcing in the equatorial lower stratosphere:Relationship to the QBO." J.Atmos.Sci.2078-2087 (1991)

[Publications] Tanaka,H.L.: "A life-cycle of nonlinear baroclinic waves represented by 3-D spectral model." Tellus(accepted). (1995)

[Publications] Tanaka,H.L.and Q.Ji: "Comparative energetics of FGGE re-analyses using the normal mode expansion." J.Meteor.Soc.Japan. 73. 1-12 (1995)

[Publications] Satoh,M.: "Hadley circulation in radiative-convective equilibrium in an axially symmetric atmosphere." J.Atmos.Sci.51. 1947-1968 (1994)

[Publications] Suzuki,T.,S.Ito and K.Takeuchi: "Variability of Upper Ocean at the equator,156E,Observed by R/V Hakuho Maru during TOGA-COARE IOP." J.Meteor.Soc.Japan. (in press). (1995)

[Publications] Minobe,S.,and K.Takeuchi: "Annual Period Equatorial Waves in the Pacific Ocean." J.Geophys.Res.(submitted). (1995)

[Publications] Ushiyama,T.,S.Sato and K.Takeuchi: "Time and Spatial Variations of Mesoscale Rainfalls and their Relation to the Large Scale Field in the Western Tropical Pacific." J.Meteor.Soc.Japan. (in press). (1995)

[Publications] Ishikawa,I.,Y.Yamanaka and N.Suginohara: "Effects of presence of a circumpolar region on buoyancy-driven circulation." Journal of Oceanography. 50. 247-263 (1994)

[Publications] M.Arai and T.Yamagata: "Asymmetric evolution of eddies in rotating shallow water." CHAOS. 4(2). 163-175 (1994)

[Publications] Nitta,T.and S.Sekine: "Diurnal variation of convectiveactivity over the tropical western Pacific." J.Meteor.Soc.Japan. 72. 627-641 (1994)

[Publications] Nitta,T.and M.Kachi: "Interdecadal variations of precipitation over the tropical Pacific and Indian Oceans." J.Meteor.Soc.Japan. 72. 823-831 (1994)

[Publications] H.Nakamura: "Rotational Evolution of Potential Vorticity Associated with a Strong Blocking Flow Configuration over Europe." Geophys.Res.Lett.21. 2003-2006 (1994)

[Publications] Ruggaber,A.,R.Dlugi and T.Nakajima: "Modelling radiation quantities and photolysis frequencies in the troposphere." J.Atmos.Chem.18. 171-210 (1994)

[Publications] Spinhirne,J.D.,and T.Nakajima: "The glory of clouds in the near infrared." Applied.33. 4652-4662 (1994)

[Publications] Kaufman,Y.J.,A.Gitelson,A.Karnieli,E.Ganor,R.S.Fraser,T.Nakajima,S.Mattoo and B.N.Holben: "Size distribution and scattering phase function of aerosol particles retrieved from sky brightness measurements." J.Geophys.Res.99. 10341-10356 (1994)

住明正東京大学, 気候システム研究センター, 教授 (10179294)