Less than half of the meteorological observation data from aircraft was delayed in technological development at 4:17 on April 30
The number of meteorological observation data received from the aircraft by the Japan Meteorological Agency has decreased to less than half, while air flights have been canceled due to the new coronavirus. Although the Japan Meteorological Agency has no major impact on the current forecasts, "If the current state is prolonged, there is a risk that there will be a delay in the development of technology to improve forecast accuracy in the future."
The Japan Meteorological Agency receives observation data such as air temperature, wind speed, and wind direction from aircraft flying in Japan.
Until early March, the observed data had been around 80,000 a day, but it suddenly decreased from the middle of March when the number of flight cancellations increased, and about 30,000 on the 22nd of this month. And less than half.
The Japan Meteorological Agency uses observation data from meteorological satellites, etc., so it has no major impact on the current forecast.
On the other hand, the observation data of the aircraft plays an important role in the technological development for improving the forecast accuracy, so the Japan Meteorological Agency said, "If the data is scarce, the technological development may be delayed in the future. ".
The cancellation of passenger aircraft continues one after another around the world, and the United Nations specialized agency WMO = World Meteorological Organization "if the situation continues, it is expected that the reliability of the weather forecast will gradually decrease."