Radar dataset — Switzerland 2020–2023

Processed MeteoSwiss radar composite dataset for short-term precipitation nowcasting over Switzerland (2020–2023). Contents of training_data.npz: X: input array — 3 consecutive radar frames (t−20, t−10, t0), shape (N, 3, 501, 371) Y: target array — 3 future frames (+10, +20, +30 min), shape (N, 3, 501, 371) Values are in log1p(mm/10min) space; apply np.expm1() to recover rain rates Split: Full dataset (train/val/test). Split indices are defined in training_samples_meta_enriched.csv, included in the companion code repository. Spatial coverage: Switzerland radar composite, 501×371 px (~1 km resolution) Temporal coverage: January 2020 – mid-2023, 10-minute intervals, rainy events only Associated code: https://github.com/antoumos-dev/precipitation-nowcasting-unet