A hyper-parameterization method for comprehensive ocean models: Advection of the image point ...

• Main Authors: Shevchenko, Igor, Berloff, Pavel
• Format: Text
• Language: unknown
• Published: arXiv 2022
• Subjects: Fluid Dynamics physics.flu-dyn; FOS Physical sciences; Image Point; North Atlantic
• Online Access: https://dx.doi.org/10.48550/arxiv.2209.07141; https://arxiv.org/abs/2209.07141

Idealized and comprehensive ocean models at low resolutions cannot reproduce nominally-resolved flow structures similar to those presented in the high-resolution solution. Although there are various underlying physical reasons for this, from the dynamical system point of view all these reasons manifest themselves as a low-resolution trajectory avoiding the phase space occupied by the reference solution (the high-resolution solution projected onto the coarse grid). In order to solve this problem, a set of hyper-parameterization methods has recently been proposed and successfully tested on idealized ocean models. In this work, for the first time we apply one of hyper-parameterization methods (Advection of the image point) to a comprehensive, rather than idealized, general circulation model of the North Atlantic. The results show that the hyper-parameterization method significantly improves a non-eddy-resolving solution towards the reference eddy-resolving solution by reproducing both the large- and small-scale ...