@misc{indiciae98003430f212,
  title = {Covariance operator estimation: Sparsity, lengthscale, and ensemble Kalman filters},
  author = {Al-Ghattas, Omar [University of Chicago, IL (United States)] and Chen, Jiaheng [University of Chicago, IL (United States)] and Sanz-Alonso, Daniel [University of Chicago, IL (United States)] and Waniorek, Nathan [University of Chicago, IL (United States)]},
  year = {2025},
  doi = {10.3150/24-bej1809},
  url = {https://www.osti.gov/biblio/3376999},
  note = {Source identifier: 3376999}
}