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Studies on Continental Hydrological Cycle Using Water Isotope Global Circulation Model

Research Project

Project/Area Number 11640426
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Meteorology/Physical oceanography/Hydrology
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

NUMAGUTI Atusi  Hokkaido Univ., Grad.School of Env.Sci., Asso.Prof., 大学院・地球環境科学研究科, 助教授 (30237797)

Co-Investigator(Kenkyū-buntansha) ABE Ayako  Univ.Tokyo, Cent.Clim.System Res., Inst., 気候システム研究センター, 助手 (30272537)
TSUJIMURA Maki  Univ.Tsukuba, Inst.Geoscience, Lec., 地球科学系, 講師 (10273301)
SUGIMOTO Atsuko  Kyoto Univ., Center for Ecolog.Res., Asso.Prof., 生態学研究センター, 助教授 (50235892)
YAMANAKA Yasuhiro  Hokkaido Univ., Grad.School of Env.Sci., Asso.Prof., 大学院・地球環境科学研究科, 助教授 (40242177)
YAMAZAKI Koji  Hokkaido Univ., Grad.School of Env.Sci., Prof., 大学院・地球環境科学研究科, 教授 (70270791)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2000: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1999: ¥1,900,000 (Direct Cost: ¥1,900,000)
KeywordsHydrological Cycle / Stable Isotope / General Circulation Model / Material Transport / Transport Scheme / Precipitation / Continental Evaporation / Eurasian Continent / 大陸規模水循環 / 大循環モデル(GCM) / 水収支 / 雲物理過程 / テレコネクション / チベット高原 / 大気大循環モデル / CCSR / NIES AGCM / semi-Lagrange法 / d-excess
Research Abstract

A Water Isotope Global Circulation Model (WI-GCM) is developed based on CCSR/NIES Atmospheric General Circulation Model (AGCM) including global circulation of oxygen and hydrogen isotope with revised treatment of mixed-phase cloud, evaporation of precipitating drop, and evaporation from ocean. The simulated isotope ratio is found to be consistent with the results of GNIP observations. Further, thenumerical scheme of transport of water in the atmosphere is replaced by newly developed grid-base advection scheme with flux-form semi-Lagrangean treatment. It is found that this replacement of transport scheme improves not only the hydrological cycle of polar region but also the simulation of isotope ratio.
Comparing the model results with observed isotope ratio in precipitation in Tibet, Siberia, and other regions, some utility of isotope for the study of mechanisms and variability of the hydrological cycle. In Tibet, an importance of water vapor which is originated from evaporation of precipitating drop from convective cloud is suggested. In Siberia, interannual variation of recycling process between land and atmosphere is suggested by observed interannual variation of isotope. In Antarctica, an interannualvariation of isotope ratio related with the interannual change of transport route connected with ENSO variation is identified.
Comparing the observed water isotope ratio in the soil and plant with model results it is suggested that the improved treatment of soil water and fractionation by evaporation from land surface is important future study.
It is concluded that we have succeeded in building a useful tool for the quantitative studies on hydrological cycle by using water isotope.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Takemura,T.,H.Okamoto,Y.Maruyama.,A.Numaguti 他2名: "Global three-dimensional simulation of aerosol optical thickness distribution of various aerosols."J.Geophys.Res.. 105. 17853-17873 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kuwagata,T.,A.Numaguti,and N.Endo: "Diurnal variation of water vapor over the central Tibetan plateau during summer."J.Meteor.Soc.Japan. 79(in press). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Tsujimura,M.,Onda,Y.,Fujiwara,J.and Ito,J.: "Hydrometric and tracer approaches to investigate rainfall-runoff processes in mountainous basins with different geologies."IAHS Publication. 258. 159-166 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Tsujimura,M.,A..Numaguti,L.Tian 他3名: "Behavior of subsurface water revealed by stable isotope and tensiometric observation in the Tibetan Plateau."J.Meteor.Soc.Japan. 79(in press). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Numaguti,A.,K.Takata,N.Endo: "Atlas of synoptic charts for the atmosphere-land surface interaction intensive observation in Yakutsk, Siberia, April-August 2000."Frontier Research System for Global Change, Tokyo. 454 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Takemura, T., H.Okamoto, Y.Maruyama., A.Numaguti. et al.: "Global three-dimensional simulation of aerosol optical thickness distribution of various aerosols."J.Geophys.Res.. 105. 17853-17873 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kuwagata, T., A.Numaguti, and N.Endo: "Diurnal variation of water vapor over the central Tibetan Plateau during summer."J.Meteor, Soc.Japan. 79, (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Tsujimura, M., Onda, Y., Fujiwara, J.and Ito, J.: "Hydrometric and tracer approaches to investigate rainfall-runoff processes in mountainous basins with different geologies."IAHS Publication. No.258. 159-166 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Tsujimura, M., A.Numaguti, L.Tian, et.al: "Behavior of subsurface water revealed by stable isotope and tensiometric observation in the Tibetan Plateau."J.Meteor.Soc.Japan. 79, (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Numaguti, A., K.Takata, N.Endo: "Atlas of synoptic charts for the atmosphere-land surface interaction intensive observation in Yakutsk, Siberia, April-August 2000."Technical report FTR-3, Frontier Research System for Global Change, Tokyo. 454 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kuwagata, T.,A. Numaguti, and N.Endo,: "Diurnal variation of water vapor over the central Tibetan plateau during summer."J.Meteor.Soc.Japan. 79 (in press) . (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Tsujimura, M.,A.Numaguti, L.Tian, S.Hashimoto et al.: "Behavior of Subsurface Water Revealed by Stable Isotope and Tensiometric Observation in the Tibetan Plateau"J.Meteor.Soc.Japan. 79 (in press) . (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Tsujimura, M., Onda, Y.,Fujiwara, J.and Ito, J. : "Hydrometric and tracer approaches to investigate rainfall-runoff processes in mountainous basins with different geologies"IAHS Publication. 258. 159-166 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] NUMAGUTI, A., M.TSUJIMURA,(ほか5名): "Large-Scale Hydrological Cycle in Tibet Revealed by Water Tracer Circulation Models and Isotope Observations"Proceedings of the 1st International Workshop on GAME Tibet. vol.1. 55-58 (1999)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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