Continuous simulation. Adjustable playback.

Frozen GFS initialization: 4 November 2026, 18:00 UTC. Continuous 360-hour weather and SO₂ transport, through 19 November. Forecast scenario, not future observations.

Independent WRF-compatible JAX weather, approved Noah-MP configuration, and CPU FLEXPART transport. The release uses the authorized precipitation grid-RMSE ≤2 mm criterion; original 1 mm failures remain available.

This view shows three outlet-origin source increments, not total ambient SO₂. Initial-background particle propagation failed local concentration checks and is excluded. The near-source field is a 3D particle-residence reconstruction with parameterized thermal rise and entrainment, not resolved stack/building CFD. Wind varies with height and receives no SO₂ feedback. Fine-bin point values have Monte Carlo uncertainty. Terrain and buildings are simplified display geometry; vertical exaggeration is 1.8.

Equations, numerical results & limits ↗