It doesn't seem like MetNet outputs a complete 3D atmospheric state, just specific (and mostly surface-level) forecast predictands [1]. The analysis you're desc

It doesn't seem like MetNet outputs a complete 3D atmospheric state, just specific (and mostly surface-level) forecast predictands [1]. The analysis you're describing could be done with a traditional numerical weather prediction and data assimilation system (especially if that system implements 4DVar, since you'll already have the model adjoint available - well, technically the tangent linear, but still applicable here). [1]: https://arxiv.org/pdf/2306.06079.pdf https://arxiv.org/pdf/2306.06079.pdf