When it comes to global forecast models, the United States was the brains behind the GFS (Global Forecast System). Even though changes have been made to the computer model, technology and new processes to gather and analyze data have significantly improved over the course of 30 years. NOAA is implementing their first step to improving the GFS model with the introduction of the Finite Volume Cube-Sphered (FV3) dynamical core.
From NOAA, it was developed in NOAA Research’s Geophysical Fluid Dynamics Laboratory initially to power climate models and was then adapted for detailed global weather prediction. The National Weather Service chose FV3 as the new GFS’s dynamical core in part because it uses less computer resources than other options. FV3 brings unprecedented accuracy to forecasts in three important ways:
With the aim to deliver better and more timely forecasts, NOAA is looking to implement this improvement soon. As of this writing, it is being run experimentally and NOAA is aiming to have this operational in late 2019.
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