Downscaling weather forecasts from Low- to High-Resolution with Diffusion Models

📰 ArXiv cs.AI

Diffusion models can downscale low-resolution weather forecasts to high-resolution using a probabilistic approach

advanced Published 7 Apr 2026
Action Steps
  1. Train a diffusion model on reforecast pairs from ECMWF IFS to learn the conditional distribution of finer-scale residuals
  2. Use the trained model to transform low-resolution ensemble forecasts into high-resolution ensembles
  3. Evaluate the performance of the downscaling method using metrics such as mean squared error or mean absolute error
  4. Integrate the downscaling method into the Anemoi framework for global atmospheric downscaling
Who Needs to Know This

Data scientists and researchers on a weather forecasting team can benefit from this method to improve forecast accuracy, and software engineers can implement the Anemoi framework to integrate this approach into existing systems

Key Insight

💡 Diffusion models can learn the conditional distribution of finer-scale residuals to downscale low-resolution weather forecasts

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💡 Diffusion models can improve weather forecast accuracy by downscaling low-resolution forecasts to high-resolution #AI #weatherforecasting
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