@misc{Meng2026LMR4DVar,
  author        = {Meng, Zilu and Hakim, Gregory J. and Emile-Geay, Julien
                   and Gondhalekar, Tanaya and Steig, Eric J.},
  title         = {Coupled multiscale paleoclimate reconstruction with
                   four-dimensional variational data assimilation},
  year          = {2026},
  eprint        = {2608.19469},
  archivePrefix = {arXiv},
  primaryClass  = {physics.ao-ph},
  doi           = {10.48550/arXiv.2608.19469},
  url           = {https://arxiv.org/abs/2608.19469v2},
  note          = {Preprint, version 2, 9 September 2026}
}