Microsoft open-sources ML tool that corrects weather model bias, extending reliable forecasts to 2-6 weeks

tomwarren · x · 2026-10-15

Microsoft researchers published a Nature paper and open-sourced a new tool that uses machine learning to correct bias in existing weather models, claiming reliable forecasts 2-6 weeks ahead — well beyond the 2-week limit of physics-based and current AI models.

Unlike Google and Nvidia's standalone AI weather models, Microsoft's approach retrofits existing models, making AI-enhanced forecasting far more affordable for resource-strapped weather agencies and useful for farmers and emergency planners.

Related event: Microsoft's PBC machine learning bias-correction method published in Nature boosts 2-6 week forecasts(10 posts)→

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