TY  - RPRT
TI  - Covariance operator estimation: Sparsity, lengthscale, and ensemble Kalman filters
AU  - Al-Ghattas, Omar [University of Chicago, IL (United States)]
AU  - Chen, Jiaheng [University of Chicago, IL (United States)]
AU  - Sanz-Alonso, Daniel [University of Chicago, IL (United States)]
AU  - Waniorek, Nathan [University of Chicago, IL (United States)]
PY  - 2025
DO  - 10.3150/24-bej1809
UR  - https://www.osti.gov/biblio/3376999
ID  - 3376999
ER  -