MATH · IN · MODELS

Sonny (hierarchical weather transformer)

Sejong University (Minjong Cheon)

Structures found in this family (1)

Linear Direction

By model (1)

Sonny (StepsNet-based ViT-S weather transformer, trained on ERA5) · 20.5M
Linear Direction

Observations (1)

A KAN-SAE with a nonlinear encoder but linear decoder directions discovers climate features in a real AI weather model and causally steers physically coherent forecasts

Papers

Beyond Linear Superposition: Discovering Climate Features in AI Weather Models with KAN-SAE (2026)