NVIDIA releases open weights for two Earth-2 weather models: Atlas for 15-day forecasts and StormScope for nowcasting

At the American Meteorological Society's annual meeting, NVIDIA released two weather models on Hugging Face and in its Earth2Studio package. Earth-2 Medium Range, built on the Atlas architecture, is a latent diffusion transformer that predicts 75 ERA5 variables on a 0.25-degree global grid in 6-hour steps, for forecasts up to 15 days; its model card lists a 2.5B-parameter main network and a 1.8B-parameter decoder. Earth-2 Nowcasting, built on StormScope, predicts GOES satellite and MRMS radar fields over the continental United States at 3 km and 10-minute steps, for zero to six hours ahead. A third model, HealDA, for global data assimilation, was announced for later in the year.

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