登陸颱風降水物理過程之數值模擬研究(II);A Modeling Study of Precipitation Processes of Landfalling Typhoons (Ii)

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题名:	登陸颱風降水物理過程之數值模擬研究(II);A Modeling Study of Precipitation Processes of Landfalling Typhoons (Ii)
作者:	楊明仁;李永安
贡献者:	國立中央大學大氣科學系
关键词:	大氣科學;防災工程
日期:	2012-12-01
上传时间:	2014-03-17 11:24:31 (UTC+8)
出版者:	行政院國家科學委員會
摘要:	研究期間：10108~10207;Heavy rainfalls brought by landfalling typhoons often induce severe fresh floods and mudslides, causing bridge collapse and building breakdown, which result in tremendous economical and property damages. This proposal will investigate the precipitation physical processes of landfalling typhoons, by using the high-resolution WRF model simulations. The scientific issues are to understand how the Taiwan Central Mountain Range modifies the microphysical processes within the typhoon circulation and to investigate how the precipitation efficiencies within the inner core and outer rainbands are changed by the terrain effects. This project will choose Typhoon Morakot (2009) as the target typhoon case to investigate how the steep Taiwan topography modifies the microphysical processes by conducting the control and sensitivity simulations with the high-resolution WRF model. The essential microphysical processes responsible for the record-breaking extreme rainfall (more than 2700 mm in 3 days) will be examined. In addition, the project will conduct systematic comparisons between the single-moment (predicting only the mixing ratio) and two-moment microphysics schemes (predicting both the mixing ratio and the number concentration) for typhoon simulations. Through systematic comparisons and detailed analyses, this proposal is aimed to find out the optimal microphysics parameterization scheme which is most appropriate for the precipitation simulations of landfalling typhoons over the Taiwan area.
關聯:	財團法人國家實驗研究院科技政策研究與資訊中心
显示于类别:	[大氣科學學系] 研究計畫

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