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I'm not sure why you're emphasizing that weather forecasting is just 2D fields. Even in the article they mention GraphCast predicts multiple data points at each
by Difwif 3y ago
I'm not sure why you're emphasizing that weather forecasting is just 2D fields. Even in the article they mention GraphCast predicts multiple data points at each global location across a variety of altitudes. All existing global computational forecast models work the same way. They're all 3d spherical coordinate systems.
- amluto 3y agoSee page three, table 1 of the paper. The model has 48 2D fields, on a grid, where the grid is a spherical thing wrapped around the surface of the Earth. There is not what I would call a 3D spherical coordinate system. There’s no field f defined as f(theta, phi, r) — ther are 48 fields that are functions of theta and phi.