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2005 Fiscal Year Final Research Report Summary

Study on the variations of tropical precipitation characteristics associated with varying climate conditions

Research Project

Project/Area Number 15540418
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Meteorology/Physical oceanography/Hydrology
Research InstitutionUniversity of Tokyo

Principal Investigator

TAKAYABU Yukari  University of Tokyo, CCSR, Associate Professor, 気候システム研究センター, 助教授 (10197212)

Co-Investigator(Kenkyū-buntansha) AONASHI Kazumasa  University of Tokyo, CCSR, Senior Researcher, 予報研究部・主任研究官 (50354444)
Project Period (FY) 2003 – 2005
KeywordsTropical Rainfall Measuring Mission / TRMM Precipitation Radar / TRMM Microwave Imager / Analysis of Precipitation Characteristics / Sea Surface Temperature
Research Abstract

The purpose of this study is, firstly, to develop the method to statistically express the precipitation characteristics utilizing the satellite remote sensing data. Secondly, we aimed at clarifying the effect of large-scale climatic conditions on the precipitation characteristics, by analyzing the observed relationships between the tropical climatic conditions and characteristics of the precipitation systems.
In the first fiscal year (2003), we performed statistic analyses utilizing the Tropical Rainfall Measuring Mission (TRMM)'s Precipitation Radar (PR) data. We successfully developed a method to classify the dominant precipitation systems, such as afternoon shower, organized systems, extratropical frontal systems, from the statistical characteristics of precipitation observed from TRMM PR, for every 3 months and for every 2.5 x 2.5 degrees grid (Katayama and Takayabu).
In the second year (2004), we examined the relationship between the sea surface temperature obtained from the TRMM Microwave Imager (TMI) data and the oceanic precipitation characteristics. We also examined the relationship between the tropical cumulus convection and the atmospheric stratification (Takayabu and Yokomori). Furthermore, we processed the TRMM PR and TMI data and produced their match-up data for the study of utilizing TMI data to retrieve the precipitation characteristics suggested from PR statistics.
In the last year (2005), we made statistical analyses of the match-up data to find the method to realize the precipitation-type classifications which was developed with PR data in the first year (Katayama and Takayabu method), utilizing the TMI data. As a result, we could find a significant relationship between the precipitation characteristics expressed with TMI data and those with PR data, suggesting a possibility of utilizing TMI data to determine the precipitation characteristics from space.

  • Research Products

    (8 results)

All 2006 2004

All Journal Article (8 results)

  • [Journal Article] A diagnostic study on interactions between atmospheric thermo dynamic structure and cumulus convection over the tropical we stern Pacific Ocean and over the Indochina Peninsula.2006

    • Author(s)
      Takayabu, Y.N., J.Yokomori, K.Yoneyama
    • Journal Title

      Journal of Meteorological Society of Japan Vol.84A

      Pages: 151-169

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Analysis of rainfall characteristics of the Madden-Julian oscillation using TRMM satellite data.2006

    • Author(s)
      Morita, J., Y.N.Takayabu, S.Shige, Y.Kodama
    • Journal Title

      Dynamics of the Atmospheres and Oceans (In press)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] A diagnostic study on interactions between atmospheric thermodynamic structure and cumulus convection over the tropical western Pacific Ocean and over the Indochina Peninsula.2006

    • Author(s)
      Takayabu, Y.N., J.Yokomori, K.Yoneyama
    • Journal Title

      Journal of the Meteorological Society of Japan vol.84A

      Pages: 151-169

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Analysis of rainfall characteristics of the Madden-Julian oscillation using TRMM satellite data.2006

    • Author(s)
      Morita, J., Y.N.Takayabu, S.Shige, Y.Kodama
    • Journal Title

      Dynamics of the Atmospheres and Oceans (in press)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Variational Assimilation of TMI Rain Type and Precipitation Retrievals into Global Numerical Weather Prediction.2004

    • Author(s)
      Aonashi, K., N.Yamazaki, H.Kamahori, K.Takahashi, F.Liu, K.Yoshida
    • Journal Title

      Journal of Meteorological Society of Japan Vol.82

      Pages: 671-693

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Spectral Retrieval of Latent Heating Profiles from TRMM PR Data. Part 1 : Development of a Model-Based Algorithm.2004

    • Author(s)
      Shige, S., Y.N.Takayabu, W.-K.Tao, D.E.Johnson
    • Journal Title

      Journal of the Applied Meteorology Vol.43

      Pages: 1095-1113

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Variational Assimilation of TMI Rain Type and Precipitation Retrievals into Global Numerical Weather Prediction.2004

    • Author(s)
      Aonashi, K., N.Yamazaki, H.Kamahori, K.Takahashi, F.Liu, K.Yoshida
    • Journal Title

      Journal of the Meteorological Society of Japan Vol.82

      Pages: 671-693

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Spectral Retrieval of Latent Heating Profiles from TRMM PR Data. Part 1 : Development of a Model-Based Algorithm.2004

    • Author(s)
      Shige, S., Y.N.Takayabu, W.-K.Tao, D.E.Johnson
    • Journal Title

      Journal of the Applied Meteorology vol.43

      Pages: 1095-1113

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2008-05-27  

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