Preprints
https://doi.org/10.5194/egusphere-2022-186
https://doi.org/10.5194/egusphere-2022-186
 
25 Apr 2022
25 Apr 2022
Status: this preprint is open for discussion.

NeverWorld2: An idealized model hierarchy to investigate ocean mesoscale eddies across resolutions

Gustavo Marques1, Nora Loose2, Elizabeth Yankovsky3, Jacob Steinberg4, Chiung-Yin Chang5, Neeraja Bhamidipati5, Alistair Adcroft5, Baylor Fox-Kemper7, Stephen Griffies5,6, Robert Hallberg5,6, Malte Jansen8, Hemant Khatri9, and Laure Zanna3 Gustavo Marques et al.
  • 1Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO
  • 2University of Colorado, Department of Applied Mathematics, Boulder, CO
  • 3Courant Institute, New York University, New York, NY
  • 4Woods Hole Oceanographic Institution, Woods Hole, MA
  • 5Atmospheric and Oceanic Sciences, Princeton University, Princeton, NJ
  • 6NOAA Geophysical Fluid Dynamics Laboratory, Princeton, NJ
  • 7Department of Earth, Environmental, and Planetary Sciences, Brown University, Providence, RI
  • 8Department of the Geophysical Sciences, The University of Chicago, Chicago, IL
  • 9Department of Earth, Ocean and Ecological Sciences, University of Liverpool, Liverpool, UK

Abstract. We describe an idealized primitive equation model for studying mesoscale turbulence and leverage a hierarchy of grid resolutions to make eddy-resolving calculations on the finest grids more affordable. The model has intermediate complexity, incorporating basin-scale geometry with idealized Atlantic and Southern oceans, and with non-uniform ocean depth to allow for mesoscale eddy interactions with topography. The model is perfectly adiabatic and spans the equator, and thus fills a gap between quasi-geostrophic models, which cannot span two hemispheres, and idealized general circulation models, which generally have diabatic processes and buoyancy forcing. We show that the model solution is approaching convergence in mean kinetic energy for the ocean mesoscale processes of interest, and has a rich range of dynamics with circulation features that emerge only due to resolving mesoscale turbulence.

Gustavo Marques et al.

Status: open (until 20 Jun 2022)

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Gustavo Marques et al.

Gustavo Marques et al.

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Short summary
We present an idealized ocean model configuration and a set of simulations performed using varying horizontal grid spacing. While the model domain is idealized, it resembles important geometric features of the Atlantic and Southern oceans. The simulations described here serve as a framework to effectively study mesoscale eddy dynamics, investigate the effect of mesoscale eddies on the large-scale dynamics, and to test and evaluate eddy parameterizations.