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
- Whitworth, T., 1983: Monitoring the Transport of the Antarctic Circumpolar Current at Drake Passage. J. Phys. Oceanogr., 13
- Whitworth, T. and R.G. Peterson, 1985: Volume Transport of the Antarctic Circumpolar Current from Bottom Pressure Measurements. J. Phys. Oceanogr., 15
- Firing, Y. L., T. K. Chereskin, and M. R. Mazloff, 2011: Vertical structure and transport of the Antarctic Circumpolar Current in Drake Passage from direct velocity observations, J. Geophys. Res., 116
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:
- Beckmann, A. and R. Timmermann, 2001: Circumpolar Influences on the Weddell Sea: Indication of an Antarctic Circumpolar Coastal Wave. J. Climate, 14
... modeling
A circum-antarctic ocean-ice shelf model and how to evaluate it?