Numerical experiments on spatially averaged precipitation in heavy rainfall event using the WRF model

Yuji Sugihara, Sho Imagama, Nobuhiro Matsunaga, Yukiko Hisada

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    2 Citations (Scopus)

    Abstract

    It is difficult to forecast hourly rainfall locally even using the latest meteorological models, although hourly rainfall averaged spatially to some extent can be used for calculating practical rainfall. This study conducts numerical experiments with triple nesting on the 2012 heavy rainfall event in northern Kyushu using the weather research and forecasting (WRF) model and examines the features of hourly rainfall averaged spatially. The dependence of rainfall is averaged spatially on a spatial averaging scale and clarified by comparing rainfall calculated by simulation using the WRFmodel with radar/AMeDAS precipitation analysis data. This study’s findings indicate the effective spatial averaging scale making relative error of calculated values to the observed ones minimum.

    Original languageEnglish
    Pages (from-to)436-447
    Number of pages12
    JournalJournal of Disaster Research
    Volume10
    Issue number3
    DOIs
    Publication statusPublished - Jan 1 2015

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    All Science Journal Classification (ASJC) codes

    • Safety, Risk, Reliability and Quality
    • Engineering (miscellaneous)

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