The new GRAF model employs a variable-resolution grid, resembling a honeycomb, that can be configured with higher resolution over areas of particular interest (Figure 1). GFS model, subdivide the global atmosphere into grid boxes that average 9 kilometers and 13 kilometers on a side, respectively, then solve the mathematical equations of atmospheric flow to generate a forecast for each of those grid cells. The current top global forecasting models, the European (ECMWF) model and the U.S.

The model will be the first hourly-updating weather model that is able to predict something as small as a thunderstorm virtually anywhere on the planet.

IBM announced today that they will be introducing the world’s highest-resolution global weather forecasting model later in 2019-the IBM Global High-Resolution Atmospheric Forecasting System (GRAF).

At right, the new IBM Global High-Resolution Atmospheric Forecasting System (GRAF) operates at 3-km resolution, showing much more detail, and updates 6 to 12 times more often than the current top global forecast models. Above: An August 2018 monsoon forecast for India, shown at left by a global weather model operating at 13-kilometer resolution.

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