What changed
NVIDIA released open Earth-2 models for medium-range forecasting and nowcasting through Earth2Studio, Hugging Face and GitHub, with an open data-assimilation model scheduled to follow.
Why it matters
Weather teams can compare forecasting, nowcasting and data-assimilation components inside one reproducible toolkit instead of relying only on closed hosted forecasts.
What to do
Backtest one local weather decision against archived observations, score lead-time-specific errors and retain the incumbent forecast whenever the open model underperforms.
Caveat
NVIDIA's performance claims need independent regional validation, and the global data-assimilation component was announced rather than available at publication.