2014 Fiscal Year Final Research Report
Development of a prediction method of short-time heavy rainfalls considering the urban environments including aerosols
| Project/Area Number |
24760390
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Hydraulic engineering
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| Research Institution | University of Yamanashi |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | エアロゾル / 大気陸面相互作用 / 大気陸面結合モデル / 短時間強雨 / 都市活動 / 都市環境 / 降雨予測 / 雲解像モデル |
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| Outline of Final Research Achievements |
Recently, the short-time heavy rainfall events over urban areas have caused severe damage in Japan. In this study, a prediction method of short-time heavy rainfalls considering the effects of aerosols was developed. The method is based on an advanced cloud resolving model, which has been developed by principal investigator and collaborators, considering detailed urban environments including artificial land cover, anthropogenic heat, and building height distribution.
The developed method was applied to a short-time heavy rainfall event which occurred in Osaka on 12 August in 2012. In an experiment considering aerosol effects, the amount of precipitation increased over southern part of Osaka plain, compared with the other experiment without aerosol effects. As a result, it was indicated that the precipitation amount can increase by the effects of aerosols in humid region like Japan in some rainfall events.
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| Free Research Field |
工学
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