TY - RPRT TI - Background Error Covariance Estimation using Information from a Single Model Trajectory with Application to Ocean Data Assimilation into the GEOS-5 Coupled Model AU - Keppenne, Christian L. AU - Rienecker, Michele M. AU - Kovach, Robin M. AU - Vernieres, Guillaume AU - Koster, Randal D. PY - 2014 UR - https://ntrs.nasa.gov/citations/20140017716 ID - 20140017716 ER -