@article{fahad2026physicsml,
  title = {A Physics--ML Multi-Fidelity Strategy for Earth System Model Parameter Optimization: A QG Proof-of-Concept},
  author = {Abdullah A. Fahad and Manmeet Singh and Donifan Barahona and Anton Darmenov and Andrea Molod},
  year = {2026},
  eprint = {2609.13275},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.13275},
}