Articles | Volume 23, issue 2
Nonlin. Processes Geophys., 23, 95–105, 2016
https://doi.org/10.5194/npg-23-95-2016
Nonlin. Processes Geophys., 23, 95–105, 2016
https://doi.org/10.5194/npg-23-95-2016

Research article 14 Apr 2016

Research article | 14 Apr 2016

Theoretical comparison of subgrid turbulence in atmospheric and oceanic quasi-geostrophic models

Vassili Kitsios et al.

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Short summary
To numerically simulate the atmosphere and ocean, the large eddies are resolved on a grid, and the effect the small unresolved eddies have on the large ones is modelled. Improper modelling leads to resolution-dependent results. We solve this long-standing problem by calculating the model coefficients from high-resolution simulations, and characterise the coefficients with a set of scaling laws. Low-resolution simulations adopting these laws reproduce the statistics of the high-resolution cases.