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Numerical Studies of Mesoscale Convective Systems Using a Cloud-Resolving Model

Research Project

Project/Area Number 14340139
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Meteorology/Physical oceanography/Hydrology
Research InstitutionNagoya University

Principal Investigator

TSUBOKI Kazuhisa  NAGOYA UNIVERSITY, Hydrospheric Atmospheric Research Center, Associate Professor, 地球水循環研究センター, 助教授 (90222140)

Co-Investigator(Kenkyū-buntansha) SATOMURA Takehiko  Kyoto University, Graduate School of Science, Associate Professor, 大学院・理学研究科, 助教授 (20273435)
SHINODA Taro  NAGOYA UNIVERSITY, Hydrospheric Atmospheric Research Center, Assistant Professor, 地球水循環研究センター, 助手 (50335022)
UYEDA Hiroshi  NAGOYA UNIVERSITY, Hydrospheric Atmospheric Research Center, Professor, 地球水循環研究センター, 教授 (80184935)
Project Period (FY) 2002 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥12,500,000 (Direct Cost: ¥12,500,000)
Fiscal Year 2003: ¥6,100,000 (Direct Cost: ¥6,100,000)
Fiscal Year 2002: ¥6,400,000 (Direct Cost: ¥6,400,000)
Keywordsmesoscale system / numerical model / cloud / Baiu front / simulation / multi-scale structure / Earth Simulator / heavy rainfall / データ同化 / レーダー
Research Abstract

The Baiu season in East Asia is characterized by a very humid climate. In the area, long-lasting and intense precipitation system occasionally develop and cause a heavy rainfall. They are referred to as a mesoscale convective system. In this study, we performed numerical simulation experiments of mesoscale convective systems using CReSS (the Cloud Resolving Storm Simulator) in collaboration with researchers of Taiwan and Korea.
In 2002, we improved CReSS ; map projection capability, improvement of the lateral boundary conditions, assimilation of Doppler radar data. Using the improved CReSS, we performed daily weather prediction experiment and simulation experiments of mesoscale convective systems in warm season. We also invited researchers of Taiwan and Korea and made collaborative experiments.
In 2003, we performed optimization of CReSS to the Earth Simulator and evaluated its performance. The result showed that vector operation ratio is 99.4 %, parallel operation ratio is 99.985 % and … More sustained efficiency 33 %. Using CReSS on the Earth Simulator, we performed numerical experiments of multitscale Baiu frontal lows, the localized heavy rainfall in Minamata City, a typhoon and snow band cloud over the Sea of Japan.
The experiment of the Minamata localized heavy rainfall was performed with the horizontal resolution of 500m using 120 nodes (960CPUs) of the Earth Simulator. The result showed detailed structure of individual convective cells and overall structures of the rainfall system. The multi-scale structures of the precipitation system associated with the Baiu front were also well simulated. The experiment of snow cloud band showed the formation and development of cloud bands or cloud streets over the sea. We also performed the prediction experiment of heavy rainfall caused by Typhoon RUSA and showed that the spiral band intensifies when the typhoon comes to the southern Korean Peninsula. These results show that computation using the cloud resolving model is important for the accurate simulation of a heavy rainfall. Less

Report

(3 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report

Research Products

(20 results)

All Other

All Publications

  • [Publications] 「研究成果報告書概要(和文)」より

    • Related Report
      2003 Final Research Report Summary
  • [Publications] 「研究成果報告書概要(和文)」より

    • Related Report
      2003 Final Research Report Summary
  • [Publications] 「研究成果報告書概要(和文)」より

    • Related Report
      2003 Final Research Report Summary
  • [Publications] 「研究成果報告書概要(和文)」より

    • Related Report
      2003 Final Research Report Summary
  • [Publications] 「研究成果報告書概要(和文)」より

    • Related Report
      2003 Final Research Report Summary
  • [Publications] 「研究成果報告書概要(和文)」より

    • Related Report
      2003 Final Research Report Summary
  • [Publications] 「研究成果報告書概要(和文)」より

    • Related Report
      2003 Final Research Report Summary
  • [Publications] 「研究成果報告書概要(欧文)」より

    • Related Report
      2003 Final Research Report Summary
  • [Publications] 「研究成果報告書概要(欧文)」より

    • Related Report
      2003 Final Research Report Summary
  • [Publications] 「研究成果報告書概要(欧文)」より

    • Related Report
      2003 Final Research Report Summary
  • [Publications] 「研究成果報告書概要(欧文)」より

    • Related Report
      2003 Final Research Report Summary
  • [Publications] 「研究成果報告書概要(欧文)」より

    • Related Report
      2003 Final Research Report Summary
  • [Publications] 「研究成果報告書概要(欧文)」より

    • Related Report
      2003 Final Research Report Summary
  • [Publications] 「研究成果報告書概要(欧文)」より

    • Related Report
      2003 Final Research Report Summary
  • [Publications]

    • Related Report
      2003 Annual Research Report
  • [Publications]

    • Related Report
      2003 Annual Research Report
  • [Publications]

    • Related Report
      2003 Annual Research Report
  • [Publications]

    • Related Report
      2003 Annual Research Report
  • [Publications]

    • Related Report
      2002 Annual Research Report
  • [Publications]

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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