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2009 Fiscal Year Final Research Report

Intraseasonal variability and its impacts to the diurnal cycle over the monsoonal Asia

Research Project

  • PDF
Project/Area Number 19740284
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Meteorology/Physical oceanography/Hydrology
Research InstitutionThe University of Tokyo

Principal Investigator

YOKOI Satoru  The University of Tokyo, 気候システム研究センター, 特任助教 (40431902)

Project Period (FY) 2007 – 2009
Keywordsアジアモンスーン / 降水変動 / 季節内変動 / コールドサージ / レーダ雨量
Research Abstract

This study reveals horizontal distribution of rainfall variability caused by several types of atmospheric disturbances related to the intraseasonal variability over the Indochina Peninsula. During the rainy season, 30-60-day variability originated in the equatorial Indian Ocean causes rainfall fluctuation only to the west of mountain ranges lying in the north-south direction, while westward-propagating vortex disturbances can produce rainfall in both sides of the ranges. This study also investigates causes of a heavy rainfall event in central Vietnam in autumn to discuss how a cold surge propagating from mid-latitudes causes the heavy rainfall.

  • Research Products

    (14 results)

All 2010 2009 2008 2007

All Journal Article (5 results) (of which Peer Reviewed: 4 results) Presentation (9 results)

  • [Journal Article] Relationship between observation interval and errors in radar rainfall estimation over the Indochina Peninsula2010

    • Author(s)
      okoi, S., Y. Nakayama, Y. Agata, T. Satomura, K. Kuraji, J. Matsumoto
    • Journal Title

      Hydrological Processes誌 (印刷中)

    • Peer Reviewed
  • [Journal Article] Environmental and external factors in the genesis of tropical cyclone Nargis in April 2008 over the Bay of Bengal.2010

    • Author(s)
      Yokoi, S., Y.N. Takayabu
    • Journal Title

      Journal of the Meteorological Society of Japan誌 (印刷中)

    • Peer Reviewed
  • [Journal Article] 災害をもたらす気象擾乱2010

    • Author(s)
      横井覚
    • Journal Title

      地理 55巻,5号

      Pages: 50-55

  • [Journal Article] Geographical distribution of variance of intraseasonal variations in western Indochina as revealed from radar reflectivity data.2008

    • Author(s)
      Yokoi, S., T. Satomura
    • Journal Title

      Journal of Climate誌 21巻,19号

      Pages: 5154-5161

    • Peer Reviewed
  • [Journal Article] Collaborative effects of cold surge and tropical depression-type disturbance on heavy rainfall in central Vietnam.2008

    • Author(s)
      Yokoi, S., J. Matsumoto
    • Journal Title

      Monthly Weather Review誌 136巻,9号

      Pages: 3275-3287

    • Peer Reviewed
  • [Presentation] Torrential rainfall in Myanmar and associated atmospheric disturbances.2009

    • Author(s)
      Yokoi, S.
    • Organizer
      2009 Joint International Symposium IGU-Comission on Hazard and Risk and Japan Geographical Union
    • Place of Presentation
      Okinawa, Japan
    • Year and Date
      2009-10-25
  • [Presentation] ベンガル湾におけるサイクロンの発生環境について。2008

    • Author(s)
      横井覚, 高薮縁
    • Organizer
      日本気象学会秋季大会
    • Place of Presentation
      仙台
    • Year and Date
      2008-11-21
  • [Presentation] サイクロンNargis発生時のTC genesis potentialに関する考察。2008

    • Author(s)
      横井覚, 高薮縁
    • Organizer
      日本地球惑星科学連合2008年大会
    • Place of Presentation
      千葉
    • Year and Date
      2008-05-26
  • [Presentation] Collaborative effect of a cold surge and tropical intraseasonal variation on a heavy rainfall in central Vietnam.2008

    • Author(s)
      Yokoi, S., J. Matsumoto
    • Organizer
      Third WCRP International Conference on Reanalysis
    • Place of Presentation
      Tokyo, Japan
    • Year and Date
      2008-01-29
  • [Presentation] インドシナ半島東岸での豪雨時における総観規模的特徴。2007

    • Author(s)
      横井覚, 松本淳
    • Organizer
      日本気象学会秋季大会
    • Place of Presentation
      札幌
    • Year and Date
      2007-10-14
  • [Presentation] Cold surge in developing phase of northeast Asian monsoon and their relationship with heavy rainfall in central Vietnam.2007

    • Author(s)
      Yokoi, S., J. Matsumoto
    • Organizer
      AOGS 4th annual meeting
    • Place of Presentation
      Bangkok, Thailand
    • Year and Date
      2007-08-01
  • [Presentation] Regionality in characteristics of intraseasonal variations over the Indochina Peninsula.2007

    • Author(s)
      Yokoi, S., T. Satomura, J. Matsumoto
    • Organizer
      IUGG
    • Place of Presentation
      Perugia, Italy
    • Year and Date
      2007-07-10
  • [Presentation] 北東アジアモンスーン発達期のコールドサージと中部ベトナムにおける豪雨。2007

    • Author(s)
      横井覚, 松本淳
    • Organizer
      日本地球惑星科学連合2007年大会
    • Place of Presentation
      千葉
    • Year and Date
      2007-05-22
  • [Presentation] 北東アジアモンスーン発達期に発生するコールドサージの研究。2007

    • Author(s)
      横井覚, 松本淳
    • Organizer
      日本気象学会春季大会
    • Place of Presentation
      東京
    • Year and Date
      2007-05-15

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Published: 2011-06-18   Modified: 2016-04-21  

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