In order to predict the "linear precipitation zone" that brings heavy rain that may lead to disasters, the Japan Meteorological Agency (JMA) began operating a new supercomputer this month and released it to the press on the 23rd. The computing power will be doubled, and the prediction accuracy is expected to improve.
The Japan Meteorological Agency (JMA) has been working to predict linear precipitation zones based on supercomputer calculations, and since June last year, it has been communicating in weather information from half a day to six hours in advance.
However, it is difficult to make accurate predictions, and of the 6 times information released so far, only three and one-quarter actually occurred in that region.
In order to more accurately predict the occurrence of linear precipitation zones, the Japan Meteorological Agency began operating a new supercomputer on the 6st of this month, and the interior was opened to the public at a facility in Tatebayashi City, Gunma Prefecture on the 13rd.
With the introduction of a new supercomputer, the computing power will be approximately doubled compared to the past, and the resolution of the calculation range will be finer, from 2 km square to 5 km square, so it is expected to show the movement of cumulonimbus clouds, which are the basis of linear precipitation bands, in more detail, and improve prediction accuracy.
In fiscal 2, the Japan Meteorological Agency will use the forecast information released for each region on a prefectural basis, and in fiscal 2024, it will further enhance the resolution and promote development so that forecasts can be made over a 2025 km square.
Hideyuki Tomatsu, Chief of the Information Planning Section of the Information Policy Division of the Japan Meteorological Agency, said, "We would like to deliver more accurate information by improving the prediction accuracy of linear precipitation zones."