TY - RPRT TI - Ensemble Data Assimilation Without Ensembles: Methodology and Application to Ocean Data Assimilation AU - Keppenne, Christian L. AU - Rienecker, Michele M. AU - Kovach, Robin M. AU - Vernieres, Guillaume PY - 2013 UR - https://ntrs.nasa.gov/citations/20140011280 ID - 20140011280 ER -