Update to Google’s AI weather model improves forecast accuracy
Summary
Google released version 3 of its AI weather forecast model called WeatherNext. This update includes using satellite data to create more frequent and accurate weather forecasts, improving predictions for temperature and precipitation.Key Facts
- WeatherNext 3 uses satellite weather data to reduce lag time in forecasts.
- The model increases forecast updates from every six hours to every hour.
- It improves spatial resolution, making weather predictions more detailed.
- A separate machine-learning model is used to estimate precipitation from satellites.
- The model adds some physical information like land/ocean status and elevation for better surface temperature forecasts.
- Compared to the previous version, WeatherNext 3 shows about 5% better accuracy in upper atmosphere conditions.
- Surface temperature forecasts improve accuracy by up to 30%.
- WeatherNext 3 generally outperforms the European Centre for Medium-Range Weather Forecasts’ AI model.
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