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

被引：2
|
作者：
Sugihara, Yuji [1 ]
Imagama, Sho [2 ]
Matsunaga, Nobuhiro [1 ]
Hisada, Yukiko [1 ]
机构：
[1] Kyushu Univ, Fac Engn Sci, 6-1 Kasuga Koen, Kasuga, Fukuoka 8168580, Japan
[2] Mitsubishi Heavy Ind Co Ltd, Chuo Ku, Sagamihara, Kanagawa 2525293, Japan
来源：
JOURNAL OF DISASTER RESEARCH | 2015年 / 10卷 / 03期
关键词：
heavy rainfall; spatially averaged precipitation; rain band; WRF model;
D O I：
10.20965/jdr.2015.p0436
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
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.
引用
收藏
页码：436 / 447
页数：12
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