FORMATION AND ENVIRONMENT OF A LINE-SHAPED RAINFALL SYSTEM OBSERVED IN NIIGATA-FUKUSHIMA HEAVY RAINFALL IN JULY 2011

  • WADA Takuya
    Division of Field Engineering for the Environment Graduate School of Engineering, Hokkaido University
  • YAMADA Tomohito
    Division of Field Engineering for the Environment Graduate School of Engineering, Hokkaido University
  • SUSENO Dwi Prabowo Yuga
    Division of Field Engineering for the Environment Graduate School of Engineering, Hokkaido University

Bibliographic Information

Other Title
  • 2011年7月新潟・福島豪雨時における線状降水帯の形状特性・環境場に関する考察

Abstract

Meteorological characteristics of the formation and environment of the Niigata-Fukushima heavy rainfall on 28~30 July 2011 were studied. Line-shaped rainfall systems were observed by using synthetic radar and Xband MP radar on 29 July at 09~17 and on 30 July at 00~04. The purpose of this study is to classify these events and to reveal the reason why these occur and stagnate. It was found that the former event can be classified as Back Building type while the latter can be classified as Back Building composite type. The development environments were focused by the convergence, relative humidity, wind and temperature by using the Japan Meteorological Agency GPV mesoscale model dataset. Results indicate that convergence area, flow of high-humidity air at 950hpa and incursion of dry-low-temperature air generated the event on 29 July at 09~17. The event on 30 July at 00~04 was generated by the effect of cold air at 400hpa which flowed into high-humidity region.

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Details

  • CRID
    1390282680328450560
  • NII Article ID
    130004557985
  • DOI
    10.2208/jscejhe.68.i_397
  • ISSN
    2185467X
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
    • KAKEN
  • Abstract License Flag
    Disallowed

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