| Presentation | 2011-03-08 Short-term precipitation forecasting using an optical flow algorithm Kentaro IMAJO, Go HASEGAWA, Yoshiaki TANIGUCHI, Hirotaka NAKANO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | For forecasting precipitation within a few hours, extrapolation methods based on the motion of observed rainy areas are generally used. This is because the computational time is shorter than that of simulating atmospheric disturbances based on hydrodynamics, especially for a few-hour forecasting. However, weather radars owned by Japan Meteorological Agency (JMA) cannot observe sudden and short-term downpours causing urban-area flood, since they do not have enough resolution and frequency. Recently, high-performance radars are being deployed to overcome the problem. However, there is no forecasting information provided using observed data by such high-performance radars. In this report, we propose a method to do short-term forecasting of precipitation with the observation data from high-performance radars. The proposed algorithm is based on an optical flow algorithm using block matching algorithm. We evaluated the proposed method and revealed that the proposed method can provide more accurate forecasting results compared with Nowcast provided by JMA, by more than 25% for between 5 and 60 minutes forecasting. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | short-term precipitation forecasting / extrapolation / optical flow / block matching |
| Paper # | CQ2010-83 |
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| Conference Information | |
| Committee | CQ |
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| Conference Date | 2011/2/28(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Communication Quality (CQ) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Short-term precipitation forecasting using an optical flow algorithm |
| Sub Title (in English) | |
| Keyword(1) | short-term precipitation forecasting |
| Keyword(2) | extrapolation |
| Keyword(3) | optical flow |
| Keyword(4) | block matching |
| 1st Author's Name | Kentaro IMAJO |
| 1st Author's Affiliation | School of Engineering and Science, Osaka University() |
| 2nd Author's Name | Go HASEGAWA |
| 2nd Author's Affiliation | Cyber Media Center, Osaka University |
| 3rd Author's Name | Yoshiaki TANIGUCHI |
| 3rd Author's Affiliation | Cyber Media Center, Osaka University |
| 4th Author's Name | Hirotaka NAKANO |
| 4th Author's Affiliation | Cyber Media Center, Osaka University |
| Date | 2011-03-08 |
| Paper # | CQ2010-83 |
| Volume (vol) | vol.110 |
| Number (no) | 455 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |