En 30 secondes
Google DeepMind contrasts conventional numerical weather prediction with its MetNet-3 and GraphCast models, and discusses possible applications. Its reported performance comparisons are specific to the evaluations conducted.
- 1Learning from weather dataThe models learn patterns instead of explicitly coding every equation.
- 2Compare the conditionsReported accuracy depends on the variables, region and baseline tested.
- 3Different forecast horizonsMetNet-3 and GraphCast address short- and medium-range forecasting.
À retenir
- Numerical models simulate atmospheric processes using equations.
- The AI models learn predictive patterns from weather data.
- MetNet-3 and GraphCast target different forecast horizons.
- Accuracy claims depend on the evaluation and do not imply superiority in every situation.
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Two forecasting approaches
Google DeepMind introduces MetNet-3 and GraphCast, two deep-learning systems for weather forecasting. The 2023 video contrasts data-driven prediction with conventional numerical weather models.
Google DeepMind introduces MetNet-3 and GraphCast, two deep-learning systems for weather forecasting. The 2023 video contrasts data-driven prediction with conventional numerical weather models.
Traditional numerical prediction represents atmospheric processes using equations and computes how many interacting variables evolve. The AI models instead learn patterns from historical weather data and use them to predict future conditions.
Reported performance
Google says the models were faster and more accurate than selected conventional systems in its evaluations. The comparison depends on the forecast variable, region, lead time and baseline; it does not establish that AI is best in every weather situation.
Google says the models were faster and more accurate than selected conventional systems in its evaluations. The comparison depends on the forecast variable, region, lead time and baseline; it does not establish that AI is best in every weather situation.
The video says MetNet-3 was already contributing to Google weather forecasts and GraphCast had been open sourced. Google’s 2023 research notes describe MetNet-3 forecasts up to 24 hours and GraphCast global forecasts up to ten days.
Decisions and applications
The intended applications range from everyday planning to preparing for storms and helping agriculture. Better forecasts can support decisions, but the video presents those future benefits as possibilities rather than guaranteed outcomes.
The intended applications range from everyday planning to preparing for storms and helping agriculture. Better forecasts can support decisions, but the video presents those future benefits as possibilities rather than guaranteed outcomes.
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