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2002 Fiscal Year Final Research Report Summary

Development of general circulation model with chemistry and studies on stratospheric material transport

Research Project

Project/Area Number 11219202
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionTokyo University

Principal Investigator

TAKAHASHI Masaaki  University of Tokyo, Center for Climate System Research, Professor, 気候システム研究センター, 教授 (70188051)

Co-Investigator(Kenkyū-buntansha) SATO Kaoru  Arctic Environment Research Center, National Institute of polar Research, Associate Professor, 助教授 (90251496)
AKIYOSHI Eiji  National Institute for Environmental Studies, Chief Researcher, 主任研究員 (10270589)
NAKAJIMA Teruyuki  Center for Climate System Research, Professor, 気候システム研究センター, 教授 (60124608)
Project Period (FY) 1999 – 2002
Keywordsstratospheric ozone / gravity waves / General Circulation Models / chemical processes / ozone hole / aerosol / SOx / Baiu front
Research Abstract

Stratospheric ozone change and it's impact to climate change are studied, using General Circulation Models (GCMs). Main subjects are ;
1) We investigate the mechanism of ozone change and climate impact including stratospheric chemical processes to GCMs.
2) We investigate dynamical processes, transport processes, and relation to chemical processes using high resolution GCMs.
Firstly, stratospheric aerosol processes are included in chemical GCMs. Then, stratospheric Sox chemistry and Sox budgets in the stratosphere are studied. Stratospheric Sox budgets are mainly determined by SO_2 in the troposphere, and transported to the stratosphere. After that, stratospheric aerosols are formed. Next, polar stratospheric clouds processes are included in chemical GCMs. Then, ozone hole experiments are done. Though ozone hole is simulated in the northern hemisphere, year to year variations are strong. Ozone hole is weak in other year, and ozone hole is strong in a year. Southern hemisphere ozone hole is also simulated, but stratospheric sudden warming and ozone hole breaking are not simulated. This is because the model has cooling bias in the polar stratosphere. Further, future ozone hole simulation is done. Ozone hole recovery in the southern hemisphere is about year 2040 in the model. This result is almost determined by fron loading.
High resolution physical GCMs are developed. The model can simulate meso-scale phenomena. Baiu front, ITCZ, SPCZ are well simulated. High resolution GCMS also simulate gravity waves. Gravity waves are important in the stratosphere. Diurnal cycle gravity waves are well simulated in the equatorial lower stratosphere.

  • Research Products

    (38 results)

All Other

All Publications (38 results)

  • [Publications] Takigawa, M. et al.: "Simulation of ozone and other chemical species using a CCSR/NIES AGCM with coupled stratospheric chemistry"J. Geophys. Res.. 104. 14003-14018 (1999)

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  • [Publications] Akiyoshi, H. et al.: "Modeling of chemistry and chemistry-radiation coupling processes for the middle atmosphere and a numerical experiment on C02 doubling with a 1-D coupled model"J. Meteor. Soc. Japan. 78. 563-584 (2000)

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  • [Publications] Fujiwara.M., M.Takahashi: "The role of the equtorial Kelvin wave in stratosphere-troposphere exchange in a general circulation model"J. Geophys. Res. 106. 22763-22780 (2001)

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  • [Publications] Sudo, K., M.Takahashi: "Simulation of tropospheric ozone changes during 1997-1998 El Nino: Meteorological impact on tropospheric photochemistry"Geophys. Res. Letters. 28. 4091-4094 (2001)

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  • [Publications] Nagashima, T. et al.: "Future development of the ozone layer calculated by a general circulation model with fully interactive chemistry"Geophys. Res. Letters. 29(8). 3.1-3.4 (2002)

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  • [Publications] Akiyoshi, H. et al.: "A low-N20 airmass simulated by the CCSR/NIES nudging CTM and observed by ILAS in 1997"J. Meteor. Soc. Japan,. 80. 451-463 (2002)

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  • [Publications] Takigawa.M.et al.: "Simulation of stratospheric sulfate aerosols using a Center for Climate System Research/National Institute for Environmental Studies atmospheric GCM with coupled chemistry, Part I: nonvolcanic simulation"J. Geophys. Res. (in press). (2003)

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  • [Publications] Akiyoshi, H.: "Chemistry and temperature perturbations calculated by achemical-radiative coupled 1-D model due to Pinatubo aerosols"J. Meteor. Soc. Japan. (in press). (2003)

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  • [Publications] Sato, N., M.Takahashi: "The interdiurnal variation of summer cumulus convection over the Kanto plain in Japan"J. Meteor. Soc. Japan. 77. 1199-1220 (1999)

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  • [Publications] M.Yoshiki, K.Sato: "A statistical study of gravity waves in the polar regions based on operational radiosonde data"J. Geophys. Res.. 105. 17995-18011 (2000)

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  • [Publications] K.Sato: "Sources of gravity waves in the polar middle atmosphere"Adv. Polar Upper Atmos. Res.. 14. 233-240 (2000)

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  • [Publications] Sato, N., M.Takahashi: "Long-term changes in the properties of summer precipitation in the Tokyo area"Tenki. 47. 643-648 (2000)

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  • [Publications] K.Sato et al.: "Global characteristics of medium-scale tropopausal waves observed in ECMWF operational data"Mon. Wea. Rev.. 128・11. 3808-3823 (2000)

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  • [Publications] Zhao, N. et al.: "Wave dynamics of super cloud clusters over the tropical region"Dyn. Atmos. Ocean. 33. 79-94 (2001)

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  • [Publications] Kawatani, Y., M.Takahashi: "Baiu Front Appearing in a High Resolution GCM Simulation"Proceedings of The Second International Symposium on Asian Monsoon System. 27-31 March. 239-245 (2000)

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  • [Publications] Baldwin, M. et al.: "The SPARC QBO"Rev. Geophys. (in press). (2001)

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  • [Publications] Sato, N., M.Takahashi: "Long-term variations of the Baiu frontal zone and midsummer weather in Japan"J. Meteor. Soc. Japan. (in press). (2001)

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  • [Publications] Y.Tomikawa et al.: "Formation of an ozone lamina due to differential advection revealed by intensive observations"J. Geophys. Res.. (in press). (2003)

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  • [Publications] M.Yamamori, K.Sato: "An energy source of medium-scale tropopausal waves"Mon. Wea. Rev.. (in press). (2003)

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  • [Publications] Arai, M. and H. mukougawa: "On the effectiveness of the eddy straining mechanism for the maintenance of blocking flows"J. Meteor. Soc. Japan. 80-4B. 1089-1102 (2002)

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  • [Publications] Hadi, T. W. et al.: "Sea-breeze circulation of Jakarta, Indonesia : A climatology based on boundary-layer observations"Mon. Weath. Rev.. 130. 2153-2166 (2002)

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  • [Publications] Hayashi, Y.-Y. et al.: "Emergence of circumpolar vortex in two dimensional turbulence on a rotating sphere"Proceedings of the IUTAM symposium on Developments in Geophysical Turbulence (Fluid Mechanics and Its Applications). 58. 179-192 (2000)

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  • [Publications] Hio, Y., and I. Hirota: "Interannual variation of planetary waves in the southern hemisphere stratosphere"J. Meteor. Soc. Japan. 80-4B. 1069-1076 (2002)

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  • [Publications] Horinouchi, T.: "Mesoscale variability of tropical precitation : validation of satellite estimates of wave forcing using TOGA-COARE radar data"J. Atmos. Sci.. 59-16. 2428-2437 (2002)

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  • [Publications] Horinouchi. T. et al.: "Convectively generated mesoscale gravity waves simulated throughout the middle atmosphere"Geophys. Res. Lett.. 29-21, 10.1029/2002GL016069. (2002)

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  • [Publications] Horinouchi. T. et al.: "Synoptic-scale Rossby waves and geographic distribution of lateral transport routes between the tropics and the extratropics in the lower stratosphere"J. Geophys. Res.. 105-D21. 26579-26592 (2000)

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  • [Publications] Inatsu, M. et al.: "Formation of subtropical westerly jet core in an idealized GCM without mountains"Geophys. Res. Lett.. 27-4. 529-532 (2000)

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  • [Publications] lnatsu, M. et al.: "Stationary eddy response surface boundary forcing : Idealized GCM experiments"J. Atmos. Sci.. 59-11. 1898-1915 (2002)

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  • [Publications] lnatsu, M. et al.: "Tropical and extratropical SST effects on the midlatitude storm track"J. Meteor. Soc. Japan. 80-4B. 1069-1076 (2002)

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  • [Publications] Ishioka, K. et al.: "Technical approach for the design of a high-resolution spectral model on a sphere : application to decaying turbulence"Nonlinear Processes in Geophysics. 7-1/2. 105-110 (2000)

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  • [Publications] Kawamoto, N. and M. Shiotani: "Interannual variability of the vertical descent rate in the Antarctic polar vortex"J. Geophys. Res.. 105-D9. 11935-11946 (2000)

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  • [Publications] Mizuta, R. and S. Yoden: "Chaotic mixing and transport barriers in an idealized stratospheric polar vortex"J. Atmos. Sci.. 58-17. 2615-2628 (2001)

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  • [Publications] Mizuta, R. and S. Yoden: "Interannual variability of the 4-day wave and isentropic mixing inside the polar vortex in midwinter of the Southern Hemisphere upper stratosphere"J. Geophys. Res.. 107-D24. 10.1029/2001JD002037 (2002)

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  • [Publications] Naito, Y.: "Planetary wave diagnostics on the QBO effects on the deceleration of the polar-night jet in the southern hemisphere"J. Meteor. Soc. Japan. 80-4B. 985-995 (2002)

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  • [Publications] Naito, Y., et al.: "A parameter sweep experiment on the effects of the equatorial QBO on stratospheric sudden warming events"J. Atmos. Sci. 60-11. 1380-1394 (2003)

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  • [Publications] Sato, N. and M. Takahashi: "Long-term variations of the Baiu frontal zone and midsummer weather in Japan"J. Meteor. Soc. Japan. in press. (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Tomikawa et al.: "Formation of an ozone lamina due to differential advection revealed by intensive observations"J. Geophys. Res.. in press. (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Yamamori and K. Sato: "An energy source of mediumscale tropopausal waves"Mon. Wea. Rev.. in press. (2003)

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Published: 2004-04-14  

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