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Multi-scale study of heavy rainfall formation

Research Project

Project/Area Number 08408014
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Natural disaster science
Research InstitutionNAGOYA UNIVERSITY

Principal Investigator

TAKEDA Takao  Institute for Hydrospheric-Atmospheric Sciences, Professor, 大気水圏科学研究所, 教授 (60022604)

Co-Investigator(Kenkyū-buntansha) SAITO Kazuo  Meteorological Research Institute, JMA,Researcher, 予報研究部, 主任研究官 (70391224)
GENG Biao  Institute for Hydrospheric-Atmospheric Sciences, Assistant Professor, 大気水圏科学研究所, 助手 (10293721)
TSUBOKI Kazuhisa  Institute for Hydrospheric-Atmospheric Sciences, Associate Professor, 大気水圏科学研究所, 助教授 (90222140)
NAKMURA Kenji  Institute for Hydrospheric-Atmospheric Sciences, Professor, 大気水圏科学研究所, 教授 (20262917)
加藤 内蔵進  名古屋大学, 大気水圏科学研究所, 助手 (90191981)
藤吉 康志  北海道大学, 低温科学研究所, 教授 (40142749)
Project Period (FY) 1996 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥34,900,000 (Direct Cost: ¥34,900,000)
Fiscal Year 1998: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1997: ¥14,600,000 (Direct Cost: ¥14,600,000)
Fiscal Year 1996: ¥17,900,000 (Direct Cost: ¥17,900,000)
KeywordsBaiu front / cloud cluster / cumulonimbus / orographic effect / rainband / Doppler radar / numerical model / satellite / 豪雨の形成 / メソβ帯状積乱雲群 / ドップラーレーダー観測 / 雲の組織化 / メソα雲群 / 集中豪雨 / ドップラーレーダ観測
Research Abstract

On the basis of the special observation, data analyses and numerical study which were performed in this three yeas, we synthesized processes of heavy rainfall formation and its predictability. Important results are summarized as follows.
(a) A significant two-year periodical variations were found in the distribution of cloud amount over the East Asia and rainfall over Japan Islands during the Baiu season.
(b) In a cloud cluster, with a horizontal scale of several hundred kilometer, which was long-lasting and stationary owing to successive formation of cumulonimbus group at its western edge, its precipitation efficiency was high.
(c) In the situation of the sufficiently moist lower troposphere, a transverse rainband was formed and moved slowly. A mountain range occasionally caused a long-lasting and stationary rainband.
(d) Complex behavior of precipitation cells and variation of environmental flow varied the middle level dry inflow and low level moist inflow. This resulted in a selective development of a convective cell and concentration of heavy rainfall.
(e) In a moist atmosphere, precipitation enhancement occurred in two stages in the upstream of an orography. According to the size and shape of the orography and atmospheric conditions, precipitation cell developed on the lee side of mountain as well as upstream side. These orographic effects are important for the heavy rain formation.
(f) On the basis of these results, we synthesize and summarize main problems in prediction of heavy rain formation and its predictability.

Report

(4 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • 1996 Annual Research Report
  • Research Products

    (29 results)

All Other

All Publications (29 results)

  • [Publications] Sachie Kanada,Biao Geng,Naohiro Yoshimoto,Yasushi Fujiyoshi and Takao Takeda: "Doppler radar Observation on the orographic modification of a precipitation convective cloud in its landing." J. Meteor. Soc. Japan. 77・1. 135-154 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Biao Geng,Yasushi Fujiyoshi and Takao Takeda: "Evolution of a multicell thunderstorm in association with mid-level rear inflow enhanced by a mid-level vortex in an adjacent thunderstorm." J. Meteor. Soc. Japan. 75・2. 619-637 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Xindong Peng and Kazuhisa Tsuboki: "Impact of convective parameterizations on mesoscale precipitation associated with Baiu front." J. Meteor. Soc. Japan. 75・6. 1141-1154 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kazuhisa Tsuboki: "Westward movement and splitting of equatorial cloud cluster associated with tropical large-scale vortices." J. Meteor. Soc. Japan. 75・1. 23-42 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kazuo Saito: "Semi-implicit fully compressible version of the MRI mesoscale nonhydro-static model・・・Forecast experiment of the 6 August 1993 Kagoshima Torrential Rain・・・" Geophysical Magazine. 2・2. 109-137 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 藤吉康志: "複雑山岳地形が風化の降雪分布に及ぼす効果" 天気. 43・6. 391-408 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Biao Geng: "Evolution of a multicell thunderstorm in association with mid-level rear infl ow enhanced by a mid-level vortex in an adjacent thunderstorm" J.Meteor.Soc.Japan. 75-2. 619-637 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Xindong Peng and Kazuhisa Tsuboki: "Impact of convective pa-rameterizations on mesoscale precipitation associated with Baiu front" J.Meteor.Soc.Japan. 75-6. 1141-1154 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Fujiyoshi, Y.: "The effect of breakup of melting snowflakes oon the resulting size distribution of raindrops" J.Meteor.Soc.Japan. 74. 343-353 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Sachie Kanada: "Biao Geng, Naohiro Yoshimoto, Yasushi Fujiyoshi and Takao Takeda Doppler radar Observation on the orographic modification of a precipitationg convective cloud in its landing." J.Meteor.Soc.Japan. 77-1. 135-154 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kazuo Saito: "Semi-implicit fully compressible version of the MRI mesoscale nonhydrostatic model -Forecast experiment of the 6 Augest 1993 Kagoshima Torrential Rain-." Geophysical Magazine. 2-2. 109-137 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kazuhisa Tsuboki: "Westward movement and splitting of equato-rial cloud cluster associated with tropical large-scale vortices." J.Meteor.Soc.Japan. 75-1. 23-42 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kazuhisa Tsuboki: "Westward movement and splitting of equatorial cloud cluster associated with tropical large-scale vortices." J.Meteor.Soc.Japan. 75・1. 23-42 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] Kazuo Saito: "Semi-implicit fully compressible version of the MRI mesoscale nonhydo-static model…Forecast experiment of the 6 August 1993 Kagoshima Torrential Rain…" Geophysical Magazine. 2・2. 109-137 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] 藤吉康志: "複雑山岳地形が風下の降雪分布に及ぼす効果" 天気. 43・6. 391-408 (1996)

    • Related Report
      1998 Annual Research Report
  • [Publications] Sachie Kanada,Biao Geng,Naohiro Yoshimoto,Yasushi Fujiyoshi and Takao Takeda: "Doppler rader Observation on the orographic modification of a precipitation convective cloud in its landing." J.Meteor.Soc.Japan. 77・1. 135-154 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Biao Geng,Yasushi Fujiyoshi and Takao Takeda: "Evolution of a multicell thunderstorm in association with mid-level rear inflow enhanced by a mid-level vortex in an adjacent thunderstorm." J.Meteor.Soc.Japan. 75・2. 619-637 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] Xindong Peng and Kazuhisa Tsuboki: "Impact of convective parameterizations on mesoscale precipitation associated with Baiu front." J.Meteor.Soc.Japan. 75・6. 1141-1154 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] Biao Geng: "Evolution of a multicell thunderstorm in association with mid-level rear inflow enhanced by a mid-level vortex in an adjacent thunderstorm" J.Meteor.Soc.Japan. 75-2. 619-637 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Xindong Peng: "Impact of convective parameterizations on mesoscale precipitation associated with Baiu front" J.Meteor.Soc.Japan. 75-6. 1141-1154 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Kazuhisa Tsuboki: "Westward movement and splitting of equatorial cloud cluster associated with tropical large-scale vortices" J.Meteor.Soc.Japan. 75-1. 23-42 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Kazuo Saito: "Semi-implicit fully compressible version of the MRI mesoscale nonhydrostatic model-Forecast experiment of the 6 August 1993 Kagoshima Torrential Rain-" Geophysical Magazine. 2-2. 109-137 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Kazuo Saito: "Sensitivity experiments on the orographic snowfall over the mountainous region of northern Japan" J.Meteor.Soc.Japan. 74-6. 797-813 (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] 藤吉康志: "複雑山岳地形が風下の降雪分布に及ぼす効果" 「天気」. 43-6. 391-408 (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] 耿驃: "Evolution of a multicell thunderstorm in association with midlevel rear inflow enhanced by a midlevel vortex in an adjacent thunderstorm." J.Meteor.Soc.Japan. 75-2(in press). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 荒生公雄: "雲仙岳に大規模な土石流を発生させた豪雨の特徴" 自然災害科学. 15-1(in press). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 荒生公雄: "長崎市東部から諫早市方面に伸びるライン上状降雨エコーの解析と地形効果に関する考察" 長崎大学教育学部 自然科学研究報告. 55. 9-22 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Kazuo,Saito: "Sensitivity experiments on the orographic snowfall over the mountainous region of northern Japan." J.Meteor.Soc.Japan. 74-6. 797-813 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 藤吉康志: "複雑山岳地形が風下の降雪分布に及ぼす効果" 天気. 43-6. 391-408 (1996)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-10-17  

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