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    Roles of an Atmospheric River and a Cutoff Low in the Extreme Precipitation Event in Hiroshima on 19 August 2014

    Source: Monthly Weather Review:;2016:;volume( 144 ):;issue: 003::page 1145
    Author:
    Hirota, Nagio
    ,
    Takayabu, Yukari N.
    ,
    Kato, Masaya
    ,
    Arakane, Sho
    DOI: 10.1175/MWR-D-15-0299.1
    Publisher: American Meteorological Society
    Abstract: recipitation in excess of 100 mm h?1 in Hiroshima, Japan, on 19 August 2014, caused a flash flood that resulted in 75 deaths and destroyed 330 houses. This study examined the meteorological background of this fatal flood. During this event, considerable filamentary transport of water vapor from the Indochina Peninsula to the Japanese islands occurred, forming a so-called atmospheric river (AR). This AR had a deep structure with an amount of free tropospheric moisture comparable with that of the boundary layer. Furthermore, a cutoff low (COL), detached from the subtropical jet over the central Pacific, moved northwestward to the Japanese islands. Instability associated with the cold core of the COL and dynamical ascent induced in front of it, interacted with the free tropospheric moisture of the AR, which caused the considerable precipitation in Hiroshima. Moreover, the mountains of the Japanese islands played a role in localizing the precipitation in Hiroshima. These roles were separately evaluated on the basis of sensitivity experiments with a cloud-resolving model.
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      Roles of an Atmospheric River and a Cutoff Low in the Extreme Precipitation Event in Hiroshima on 19 August 2014

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4230813
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    contributor authorHirota, Nagio
    contributor authorTakayabu, Yukari N.
    contributor authorKato, Masaya
    contributor authorArakane, Sho
    date accessioned2017-06-09T17:33:26Z
    date available2017-06-09T17:33:26Z
    date copyright2016/03/01
    date issued2016
    identifier issn0027-0644
    identifier otherams-87173.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4230813
    description abstractrecipitation in excess of 100 mm h?1 in Hiroshima, Japan, on 19 August 2014, caused a flash flood that resulted in 75 deaths and destroyed 330 houses. This study examined the meteorological background of this fatal flood. During this event, considerable filamentary transport of water vapor from the Indochina Peninsula to the Japanese islands occurred, forming a so-called atmospheric river (AR). This AR had a deep structure with an amount of free tropospheric moisture comparable with that of the boundary layer. Furthermore, a cutoff low (COL), detached from the subtropical jet over the central Pacific, moved northwestward to the Japanese islands. Instability associated with the cold core of the COL and dynamical ascent induced in front of it, interacted with the free tropospheric moisture of the AR, which caused the considerable precipitation in Hiroshima. Moreover, the mountains of the Japanese islands played a role in localizing the precipitation in Hiroshima. These roles were separately evaluated on the basis of sensitivity experiments with a cloud-resolving model.
    publisherAmerican Meteorological Society
    titleRoles of an Atmospheric River and a Cutoff Low in the Extreme Precipitation Event in Hiroshima on 19 August 2014
    typeJournal Paper
    journal volume144
    journal issue3
    journal titleMonthly Weather Review
    identifier doi10.1175/MWR-D-15-0299.1
    journal fristpage1145
    journal lastpage1160
    treeMonthly Weather Review:;2016:;volume( 144 ):;issue: 003
    contenttypeFulltext
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