NVIDIA Earth‑2 adds AI data‑assimilation tools (SDA, HealDA) for weather forecasting
NVIDIA says Earth‑2 now includes AI data‑assimilation tools that ingest proprietary and third‑party observations to update forecasts more frequently. Features include Score‑Based Data Assimilation (SDA) to constrain diffusion models such as CorrDiff and StormCast (NVIDIA reports a 54% wind‑speed RMSE reduction in a CorrDiff‑COSMO downscaling example) and HealDA, which maps heterogeneous observations onto a 1° HEALPix grid for rapid global state estimation.