A joint research group of the Institute of Physical and Chemical Research, Institute of Electromagnetics, Information and Communication Research Organization, Osaka University, MTI, University of Tsukuba, and the University of Tokyo updates the precipitation forecast every 25 seconds in the Tokyo metropolitan area from 9th to 5th September. Conduct a demonstration experiment.

 According to the Japan Science and Technology Agency, in 2016, the joint research group developed a method for predicting guerrilla rainstorms by combining the supercomputer "K computer" with a weather radar.

 In the demonstration experiment, this method was further advanced, and the state of rain clouds was observed every 30 seconds with the state-of-the-art weather radar of the Information and Communication Research Organization installed in Saitama City, and the supercomputer operated by the University of Tsukuba and the University of Tokyo was used. Update the precipitation forecast every 30 seconds.

 This forecast data is displayed every 30 seconds on the RIKEN Weather Forecast Research web page.Unlike previous weather forecasts, the fast update makes it possible to forecast guerrilla rainstorms that develop rapidly in just a few minutes.

 In recent years, guerrilla rainstorms have occurred frequently in various places, causing flood damage.It is thought that there is a possibility that it will occur frequently in the future due to the effects of global warming, but it was difficult to make a forecast because the development of rain clouds was too fast.The research group made it possible to make forecasts by linking the virtual world on a computer with reality through precise observations by state-of-the-art weather radar.

reference:[Japan Science and Technology Agency] Guerrilla rainstorm forecast updated every 30 seconds-Start real-time demonstration experiment in the metropolitan area (PDF)

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