TY - JOUR AB - The problem of augmenting low-resolution ocean circulation models with the information extracted from the data relevant to the unresolved subgrid processes is addressed. A highly nonlinear model of eddy-resolving oceanic circulation – quasigeostrophic wind-driven double gyres – is considered. The model solutions are characterized by a vigorous dynamic coupling between the resolved large-scale and small-scale (eddy) flow features. This solution provides the data for augmenting the low-resolution model with the same configuration. The eddy forcing field, which contains the essential information about coupling between the large and eddy scales, is obtained, modified, coarse-grained and added to augment the low-resolution model. The implemented modification involves novel data-adaptive harmonic decomposition analysis and dynamical constraining based on the low-resolution nonlinear advection operator. The resulting augmentation of the low-resolution model significantly improves the solution, including its time-mean circulation and low-frequency variability. This result also paves the way for a systematic data-driven emulation of unresolved and under-resolved scales of motion. AU - Ryzhov,EA AU - Kondrashov,D AU - Agarwal,N AU - Berloff,PS DO - 10.1016/j.ocemod.2019.101464 PY - 2019/// SN - 1463-5003 TI - On data-driven augmentation of low-resolution ocean model dynamics T2 - Ocean Modelling UR - http://dx.doi.org/10.1016/j.ocemod.2019.101464 UR - http://hdl.handle.net/10044/1/73192 VL - 142 ER -