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JDR Vol.10 No.3 pp. 436-447
(2015)
doi: 10.20965/jdr.2015.p0436

Paper:

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Numerical Experiments on Spatially Averaged Precipitation in Heavy Rainfall Event Using the WRF Model

Yuji Sugihara*, Sho Imagama**, Nobuhiro Matsunaga*, and Yukiko Hisada*

*Faculty of Engineering Sciences, Kyushu University
6-1 Kasuga Koen, Kasuga, Fukuoka 816-8580, Japan

**Mitsubishi Heavy Industries
3000 Tana, Chuo-ku, Sagamihara, Kanazawa 252-5293, Japan

Received:
December 18, 2014
Accepted:
April 27, 2015
Published:
June 1, 2015
Creative Commons License
Keywords:
heavy rainfall, spatially averaged precipitation, rain band, WRF model
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 WRF model 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.
Cite this article as:
Y. Sugihara, S. Imagama, N. Matsunaga, and Y. Hisada, “Numerical Experiments on Spatially Averaged Precipitation in Heavy Rainfall Event Using the WRF Model,” J. Disaster Res., Vol.10 No.3, pp. 436-447, 2015.
Data files:
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