The study found that the "accuracy of surface meteorology forecast in March-May 2020 decreases remarkably" as flight density drops due to Covid-19. The research examined weather forecasts from March 2020 and compared them to actual observed weather in the same time frame. "The accuracy and precision of our weather models are paramount, and these additional observations can then help weather models and forecasters predict how extreme weather events will unfold." "Degradation of the weather forecast is more substantially in the Northern Hemisphere than the Southern Hemisphere," says Chen. "Further worsening of weather forecasts may be expected and that the error could become larger for longer-term forecasts," says Chen.

Source: CNN July 18, 2020 06:56 UTC