PowerPoint-pr

1
Model bathymetries
HAMSOM bathymetry
MPI-OM bathymetry
Greenland
Greenland
Latitude
Iceland
Iceland
Longitude
Longitude
Depth scale (m)
Max-Planck Institute Ocean Model HAMburg
Shelf Ocean Model
Stiig Wilkenskjeld The influence of model
resolution and local dynamics on the simulated
overflow over the Greenland-Scotland Ridge.
2
Transports (in Sv, 1 Sv 106 m3/s)
MPI-OM
HAMSOM
Stiig Wilkenskjeld The influence of model
resolution and local dynamics on the simulated
overflow over the Greenland-Scotland Ridge.
3
Monthly mean transport correlations
AW
EGC OW
AE
Same watermass Different gap
Different watermass Different gap
Different watermass Same gap
OE
Stiig Wilkenskjeld The influence of model
resolution and local dynamics on the simulated
overflow over the Greenland-Scotland Ridge.
4
Summary

• The coarse model is capable of letting more
  water across the ridge.
• The regional model is correlating its transports
  well to the global model and introduces no lead
  or lack, eventhough the coupling between them is
  prescribed relatively weakly.
• The global model produces a close link between
  the transports in the eastern and western gaps.
  This effect is much less pronounced in the
  regional model.
• The eddy dynamics believed to be the major
  overflow process across the shallower parts of
  the GSR is captured in the regional model.
• The Denmark Strait seems to be sufficiently
  resolved even in the global model for hydraulic
  control to be important.
• The mixing can be quite different in the two
  models.

Stiig Wilkenskjeld The influence of model
resolution and local dynamics on the simulated
overflow over the Greenland-Scotland Ridge.