A circum-antarctic ocean-ice shelf model

and how to evaluate it?

The need for ocean-ice shelf models

Top features

Tidal wave at initialization

SSH

Tidal wave at initialization

SSH

Development

Validation

Evaluation?

... get it about right!

Southern ocean circulation

Southern ocean circulation

ACC strength via mean Drake Passage Transport

Southern ocean circulation

Gyres via annual mean horizontal stream function [Sv]

Water masses

Domain volume via annual mean T/S diagram

Distribution in sectors via temp/salt/density plots

SST

 AABW formation

?

  • Aguiar, W., et al., 2017: On the deep convection events and Antarctic Bottom Water formation in ocean reanalysis products, Ocean Sci. Discuss. in review

 AABW formation

(model dynamics)

Bottom Water occupying % of each sector

  • Aguiar, W., et al., 2017: On the deep convection events and Antarctic Bottom Water formation in ocean reanalysis products, Ocean Sci. Discuss. in review

Tides

Tidal currents via SSH

Eddies

?

Momentum and heat transport across the ACC

Thank you!

Southern ocean circulation

Gyres via annual mean horizontal stream function [Sv]

Weddell Gyre:

  • Schroeder, M and E Fahrbach 1999: On the structure and the transport of the eastern Weddell Gyre: Deep-Sea Research
  • Klatt, O. , Fahrbach, E. , Hoppema, M. and Rohardt, G. (2005): The transport of the Weddell Gyre across the Prime Meridian , Deep-sea research ii
  • Beckmann, A., H. H. Hellmer, and R. Timmermann (1999): A numerical model of the Weddell Sea: Large-scale circulation and water mass distribution, J. Geophys. Res., 104

... modeling

Southern ocean circulation

Gyres via annual mean horizontal stream function [Sv]

Ross Gyre:

  • Assmann, Karen & Timmermann, Ralph. (2005): Variability of dense water formation in the Ross Sea. Ocean Dynamics. 55

... modeling

Kerguelen Gyre:

... modeling

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