Nonlinear Processes in Geophysics
Nonlinear Processes in Geophysics
NPG
Articles | Volume 23, issue 2
Articles | Volume 23, issue 2
https://doi.org/10.5194/npg-23-95-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/npg-23-95-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 23, issue 2
Research article
 | 
14 Apr 2016
Research article |  | 14 Apr 2016

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

Vassili Kitsios, Jorgen S. Frederiksen, and Meelis J. Zidikheri

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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.
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