3D nowcasting

3D nowcasting refers to an experimental technology of nowcasting in meteorology that uses a rapid phased-array radar to predict precipitation several minutes in advance. The phased-array radar takes a scan of the sky in anywhere from 10 to 30 seconds, viewing 100 vertical levels in a range of 60 km. thus providing inputs every 30 seconds. It divides the sky into several "layers" and uses a new algorithm for forecasting very quickly. The models use the K computer, requiring a large amount of observational data, and a large amount of computational power. The radar produces 100 times more data than the conventional parabolic antenna radar.

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